S-8366

Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series The S-8365/8366 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a timer latch short-circuit protection circuit, a PWM control circuit (S-8365 Series) and a PWM / PFM switching control circuit (S-8366 Series). With an external low-ON-resistance Nch Power MOS, this product is ideal for applications requiring high efficiency and a high output current. The S-8365 Series efficiently works on voltage’s condition of large I/O difference due to the PWM control circuit linearly varies the duty ratio to 90%. During light-load, the S-8366 Series switches its operation to the PFM control by the PWM / PFM switching control circuit in order to prevent efficiency decline due to the IC operating current. Ceramic capacitors can be used for output capacitor. Small packages SNT-6A, SOT-23-5 and SOT-23-6 enable high-density mounting. Features • Low operation voltage • Input voltage range • Oscillation frequency • Reference voltage • Soft start function • Low current consumption • Duty ratio : Start at 1.1 V (1 mA) guaranteed (in the product without UVLO function) : 1.8 V to 5.5 V : 1.2 MHz, 600 kHz : 0.6 V±2.0% : 7 ms typ. : 70 µA typ. at switching off : Built-in PWM / PFM switching control circuit (S-8366 Series) 28% to 85% (1.2 MHz product) 28% to 90% (600 kHz product) : Current consumption 1.0 µA max. at shutdown : Inductor, diode, capacitor, transistor : Selectable with / without short-circuit protection circuit for each product Settable delay time by external capacitor (in the product with short-circuit protection) : Selectable with / without UVLO for each product : SNT-6A, SOT-23-5, SOT-23-6 • Shutdown function • External parts • Timer latch short-circuit protection circuit • UVLO (under-voltage lockout) function • Small packages • Lead-free product Applications • MP3 players, digital audio players • Digital cameras, GPS, wireless transceiver • Portable devices Packages Package name SNT-6A SOT-23-5 SOT-23-6 Drawing code Package PG006-A MP005-A MP006-A Tape PG006-A MP005-A MP006-A Reel PG006-A MP005-A MP006-A Land PG006-A − − Seiko Instruments Inc. 1 S-8365/8366 Series Block Diagram STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 1. With UVLO function and short-circuit protection L SD VOUT VDD UVLO M1 EXT VIN CIN ON/OFF Triangular Wave Oscillation Circuit PWM Comparator Error PWM control, or Amplifier PWM / PFM + + Switching Control − Circuit − Timer Latch Short-Circuit Protection Reference Voltage ON/OFF with Soft-Start Circuit Circuit CSP VSS CFB RFB1 FB RFB2 COUT Figure 1 2. With UVLO function, without short-circuit protection L SD VOUT UVLO VDD Triangular Wave Oscillation Circuit PWM Comparator Error Amplifier + − CFB RFB1 FB RFB2 M1 EXT PWM control, or PWM / PFM Switching Control Circuit + − VIN CIN ON/OFF ON/OFF Circuit Reference Voltage with Soft-Start Circuit COUT VSS Figure 2 2 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 3. Without UVLO and short-circuit protection L IC Internal Power Supply Triangular Wave Oscillation Circuit PWM Comparator M1 EXT PWM control, or PWM / PFM Switching Control Circuit + − Error Amplifier + − SD VOUT VDD CFB RFB1 FB RFB2 VIN CIN ON/OFF ON/OFF Circuit Reference Voltage with Soft-Start Circuit COUT VSS Figure 3 Caution To stabilize the output voltage and oscillation frequency of the S-8365/8366 Series, the input voltage of 1.8 V ≤ VDD ≤ 5.5 V is necessary. When connecting the VOUT output to the VDD pin, set the input voltage (VOUT) as to satisfy the above range, including the spike voltage generated in VOUT. Seiko Instruments Inc. 3 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 Product Name Structure Users can select the control system, oscillation frequency, short-circuit protection, UVLO function, packages for the S-8365/8366 Series. Refer to “1. Product Name” regarding the contents of product name, “2. Product List” regarding the product type. 1. Product name (1) SNT-6A S-836 x A x x x x I6T1 G2 Package name (abbreviation) and IC packing specification*1 I6T1: SNT-6A, Tape ON / OFF pin pull-down A: Unavailable B: Available UVLO function A: Unavailable B: Available Short-circuit protection A: Unavailable B: Available Oscillation frequency A: 1.2 MHz B: 600 kHz Control system 5: PWM control 6: PWM / PFM switching control *1. Refer to the tape specification. 4 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series (2) SOT-23-5, SOT-23-6 S-836 x A x x x x xxxx S2 Package name (abbreviation) and IC packing specification*1 M5T1: SOT-23-5, Tape M6T1: SOT-23-6, Tape ON / OFF pin pull-down A: Unavailable B: Available UVLO function A: Unavailable B: Available Short-circuit protection A: Unavailable (SOT-23-5) B: Available (SOT-23-6) Oscillation frequency A: 1.2 MHz B: 600 kHz Control system 5: PWM control 6: PWM / PFM switching control *1. Refer to the tape specification. Seiko Instruments Inc. 5 S-8365/8366 Series 2. Product list STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 (1) S-8365 Series (PWM control) Table 1 SOT-23-5 − S-8365AAABA-M5T1S2 S-8365AAAAA-M5T1S2 − S-8365ABABA-M5T1S2 SOT-23-6 SNT-6A Oscillation Short-circuit frequency protection 1.2 MHz 1.2 MHz 1.2 MHz 600 kHz 600 kHz Available Unavailable Available Unavailable UVLO function Available Available Available Available ON / OFF pin pull-down Unavailable Unavailable Unavailable Unavailable S-8365AABBA-M6T1S2 S-8365AABBA-I6T1G2 − − − S-8365AAABA-I6T1G2 S-8365AAAAA-I6T1G2 S-8365ABABA-I6T1G2 Unavailable Unavailable Unavailable S-8365ABBBA-M6T1S2 S-8365ABBBA-I6T1G2 S-8365ABAAA-M5T1S2 − S-8365ABAAA-I6T1G2 600 kHz Unavailable Unavailable Unavailable Remark 1. Contact our sales office for S-8365AxBAA (without UVLO function, with short-circuit protection). 2. Contact our sales office for S-8365AxxxB ( ON/OFF pin pull-down). (2) S-8366 Series (PWM / PFM switching control) Table 2 SOT-23-5 − SOT-23-6 SNT-6A Oscillation Short-circuit frequency protection 1.2 MHz 1.2 MHz 1.2 MHz 600 kHz 600 kHz Available Unavailable Available Unavailable UVLO function Available Available Available Available ON / OFF pin pull-down Unavailable Unavailable Unavailable Unavailable S-8366AABBA-M6T1S2 S-8366AABBA-I6T1G2 − S-8366AAABA-I6T1G2 S-8366AAABA-M5T1S2 − S-8366AAAAA-I6T1G2 S-8366AAAAA-M5T1S2 − S-8366ABABA-M5T1S2 S-8366ABBBA-M6T1S2 S-8366ABBBA-I6T1G2 − S-8366ABABA-I6T1G2 − S-8366ABAAA-I6T1G2 Unavailable Unavailable Unavailable 600 kHz Unavailable Unavailable Unavailable S-8366ABAAA-M5T1S2 Remark 1. Contact our sales office for S-8366AxBAA (without UVLO function, with short-circuit protection). 2. Contact our sales office for S-8366AxxxB ( ON/OFF pin pull-down). 6 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Pin Configurations Table 3 SNT-6A Top view 1 2 3 6 5 4 With Short-Circuit Protection Description External transistor connection pin GND pin Power-off pin “H” : Power-on (normal operation) “L” : Power-off (standby) Output voltage feedback pin Delay time setting pin for short-circuit protection IC power supply pin Pin No. 1 2 3 4 5 Symbol EXT VSS ON / OFF FB CSP VDD Figure 4 6 Table 4 Pin No. 1 2 Without Short-Circuit Protection Description EXT VSS Symbol External transistor connection pin GND pin Power-off pin “H” : Power-on (normal operation) 3 ON / OFF “L” : Power-off (standby) 4 FB Output voltage feedback pin *1 NC 5 No connection 6 VDD IC power supply pin *1. The NC pin indicates electrically open. The NC pin can be connected to VDD or VSS. SOT-23-5 Top view 5 4 Table 5 Pin No. 1 2 3 4 5 Without Short-Circuit Protection Description Power-off pin “H” : Power-on (normal operation) “L” : Power-off (standby) GND pin External transistor connection pin IC power supply pin Output voltage feedback pin Symbol ON / OFF VSS EXT VDD FB 1 2 3 Figure 5 Seiko Instruments Inc. 7 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 SOT-23-6 Top view 6 5 4 Table 6 Pin No. 1 2 3 4 5 6 With Short-Circuit Protection Description IC power supply pin Delay time setting pin for short-circuit protection Output voltage feedback pin Power-off pin “H” : Power-on (normal operation) “L” : Power-off (standby) GND pin External transistor connection pin Symbol VDD CSP FB ON / OFF VSS EXT 1 2 3 Figure 6 8 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Absolute Maximum Ratings Table 7 Item VDD pin voltage FB pin voltage EXT pin voltage ON/OFF pin voltage CSP pin voltage Power dissipation Absolute Maximum Ratings (Ta = 25°C, VSS = 0 V unless otherwise specified) Symbol Absolute Maximum Ratings Unit VDD VSS−0.3 to VSS+6.0 V VFB VSS−0.3 to VDD+0.3 V VEXT VSS−0.3 to VDD+0.3 V VON / OFF VSS−0.3 to VDD+0.3 V VCSP VSS−0.3 to VDD+0.3 V 400*1 mW PD 600*1 mW 650*1 mW Topr −40 to +85 °C Tstg −40 to +125 °C SNT-6A SOT-23-5 SOT-23-6 Operating ambient temperature Storage temperature *1. When mounted on board [Mounted board] (1) Board size : 114.3 mm × 76.2 mm × t1.6 mm (2) Name : JEDEC STANDARD51-7 Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. 700 Power Dissipation (PD) [mW] 600 500 400 300 200 100 0 0 50 100 150 SNT-6A SOT-23-6 SOT-23-5 Ambient Temperature (Ta) [°C] Figure 7 Package Power Dissipation (When Mounted on Board) Seiko Instruments Inc. 9 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 Electrical Characteristics 1. 1.2 MHz product Table 8 Item Input voltage*1 Operating start *2 voltage Oscillation start voltage Operation holding voltage FB voltage FB voltage temperature coefficient FB pin input current Current consumption *3 at operation Current consumption at switching off Current consumption at shutdown EXT pin output current Oscillation frequency Maximum duty ratio PWM / PFM switching *4 Duty ratio Short-circuit protection *5 delay time UVLO release voltage UVLO hysteresis width High level input voltage Low level input voltage Symbol VDD VST1 VST2 VHLD VFB ∆VFB ∆Ta IFB ISS1 ISS2 ISSS IEXTH IEXTL fosc Max Duty PFM Duty tPRO VUVLO+ VUVLOHYS VSH VSL Electrical Characteristics (VDD = 3.3 V, Ta = 25°C unless otherwise specified) Test Conditions Min. Typ. Max. Unit Circuit − − − − 0.6 ±100  500 70 − −130 200 1.2 85 28 50 1.70 0.10 − − − 1.0 5.5 1.1 1.0 − 0.612 − 0.1 − 120 1.0 −60 − 1.4 90 36 75 1.78 0.15 − 0.3 0.1 2.5 V V V V V ppm/°C µA µA µA µA mA mA MHz % % ms V V V V µA µA 2 3 1 3 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 − 1.8 Product without UVLO function, − IOUT = 1 mA No external parts − for product without UVLO function, Product without UVLO function, IOUT = 1 mA, Determined by decreasing 0.8 VDD gradually − 0.588 Ta = −40°C to +85°C VDD = 1.8 V to 5.5 V, FB pin At switching operation, no load VFB = VFB(S) × 0.95 At switching stop, VFB = VFB(S) × 1.5 VON / OFF = 0 V − －0.1 − − − − 100 1.0 80 20 37.5 1.60 0.05 0.75 − −0.1 0.2 VEXT = VDD − 0.4 V VEXT = 0.4 V − VFB = VFB(S) × 0.95 VDD = VOUT(S) − 0.1 V, no load Product with short-circuit protection, At CSP = 0.1 µF Product with UVLO function Product with UVLO function VDD = 1.8 V to 5.5 V, ON/OFF pin VDD = 1.8 V to 5.5 V, ON/OFF pin Product without ON/OFF pin pull-down, VDD = 1.8 V to 5.5 V, ON/OFF pin Product with ON/OFF pin pull-down, VDD = 1.8 V to 5.5 V, ON/OFF pin VDD = 1.8 V to 5.5 V, ON/OFF pin High level input current ISH Low level input current ISL −0.1 − 0.1 µA 1 Soft-start time tSS − 5 7 10 ms 2 *1. The S-8365/8366 Series steps up from VDD = 1.1 V, but set the input voltage as to 1.8 V ≤ VDD ≤ 5.5 V for stabilizing the output voltage and oscillation frequency. *2. This is the guaranteed value measured with external parts shown in “Table 10 External Parts List” and with test circuits shown in Figure 10. The operating start voltage varies largely depending on diode’s forward voltage. Evaluate sufficiently with actual device. *3. VFB(S) is a setting value for FB voltage. *4. VOUT(S) is a setting value for output voltage. VOUT is the typical value of actual output voltage. VOUT(S) can be set by using the rate of VFB and the output voltage setting resistors (RFB1, RFB2). *5. The short-circuit protection time can be set by the external capacitor, and the maximum set value by the external capacitor is unlimited when an ideal case is assumed. But use CSP = approximately 0.47 µF as a target maximum value due to the need to consider the discharge time of the capacitor. 10 Seiko Instruments Inc. Rev.1.1_00 2. STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 600 kHz product Table 9 Item Symbol VDD VST1 VST2 VHLD VFB ∆VFB ∆Ta IFB ISS1 ISS2 ISSS IEXTH IEXTL fosc Max Duty PFM Duty tPRO VUVLO+ VUVLOHYS VSH VSL Electrical Characteristics (VDD = 3.3 V, Ta = 25°C unless otherwise specified) Test Conditions Min. Typ. Max. Unit Circuit − − − − 0.6 ±100 − 300 70 − −130 200 600 90 28 50 1.70 0.10 − − − 1.0 5.5 1.0 0.9 − 0.612 − 0.1 − 120 1.0 −60 − 690 95 36 75 1.78 0.15 − 0.3 0.1 2.5 V V V V V ppm/°C µA µA µA µA mA mA kHz % % ms V V V V µA µA 2 3 1 3 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 Input voltage Operating start *2 voltage Oscillation start voltage Operation holding voltage FB voltage FB voltage temperature coefficient FB pin input current Current consumption *3 at operation Current consumption at switching off Current consumption at shutdown EXT pin output current Oscillation frequency Maximum duty ratio PWM / PFM switching *4 Duty ratio Short-circuit protection *5 delay time UVLO release voltage UVLO hysteresis width High level input voltage Low level input voltage *1 − 1.8 Product without UVLO function, − IOUT = 1 mA No external parts − for product without UVLO function, Product without UVLO function, IOUT = 1 mA, Determined by decreasing 0.8 VDD gradually  0.588 Ta = −40°C to +85°C VDD = 1.8 V to 5.5 V, FB pin At switching operation, no load VFB = VFB(S) × 0.95 At switching stop, VFB = VFB(S) × 1.5 VON / OFF = 0 V − −0.1 − − − − 100 510 85 20 37.5 1.60 0.05 0.75 − −0.1 0.2 VEXT = VDD − 0.4 V VEXT = 0.4 V − VFB = VFB(S) × 0.95 VDD = VOUT(S) − 0.1 V, no load Product with short-circuit protection, At CSP = 0.1 µF Product with UVLO function Product with UVLO function VDD = 1.8 V to 5.5 V, ON/OFF pin VDD = 1.8 V to 5.5 V, ON/OFF pin Product without ON/OFF pin pull-down, VDD = 1.8 V to 5.5 V, ON/OFF pin Product with ON/OFF pin pull-down, VDD = 1.8 V to 5.5 V, ON/OFF pin VDD = 1.8 V to 5.5 V, ON/OFF pin High level input current ISH Low level input current ISL −0.1 − 0.1 µA 1 Soft-start time tSS − 5 7 10 ms 2 *1. The S-8365/8366 Series steps up from VDD = 1.0 V, but set the input voltage as to 1.8 V ≤ VDD ≤ 5.5 V for stabilizing the output voltage and oscillation frequency. *2. This is the guaranteed value measured with external parts shown in “Table 10 External Parts List” and with test circuits shown in Figure 10. The operating start voltage varies largely depending on diode’s forward voltage. Evaluate sufficiently with actual device. *3. VFB(S) is a setting value for FB voltage. *4. VOUT(S) is a setting value for output voltage. VOUT is the typical value of actual output voltage. VOUT(S) can be set by using the rate of VFB and the output voltage setting resistors (RFB1, RFB2). *5. The short-circuit protection time can be set by the external capacitor, and the maximum set value by the external capacitor is unlimited when an ideal case is assumed. But use CSP = approximately 0.47 µF as a target maximum value due to the need to consider the discharge time of the capacitor. Seiko Instruments Inc. 11 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 External Parts List When Measuring Electrical Characteristics Table 10 Element Name Inductor Transistor Diode Input capacitor Output capacitor FB pin capacitor CSP pin capacitor Speed-up capacitor Base resistor Output voltage setting resistor 1 Output voltage setting resistor 2 Symbol L M1 Q1 SD CIN COUT CFB CSP Cb Rb RFB1 RFB2 External Parts List Manufacturer TAIYO YUDEN Co., Ltd. TDK Corporation Vishay Intertechnology, Inc. TOSHIBA CORPORATION SHINDENGEN ELECTRIC MANUFACTURING CO.,LTD TDK Corporation TDK Corporation Part Number NR6028T LTF5022 Si3460BDV 2SD2652 D1FH3 Consonants 2.2 µH (1.2 MHz product) 3.3 µH (600 kHz product) − − − 10 µ F 22 µ F 47 pF 0.1 µF 2200 pF 1 kΩ 220 kΩ 30 k Ω C3225X7R1E106MB C4532X7R1E226MB GRM1882C1H Murata Manufacturing Co., Ltd. series TDK Corporation C1220X7R1E104MB TDK Corporation C1005X7R1H222K ROHM Co., Ltd. MCR03 series ROHM Co., Ltd. ROHM Co., Ltd. MCR03 series MCR03 series 12 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Test Circuits 1. A VDD CIN ON/OFF A S-8365/8366 Series VSS EXT FB CSP A V ↓ CSP Figure 8 2. VDD L M1 EXT CIN ON/OFF A S-8365/8366 Series VSS FB CSP CSP SD CFB VOUT RFB1 COUT RFB2 V ↓ IOUT Figure 9 3. VDD L Cb EXT CIN ON/OFF A S-8365/8366 Series VSS Rb FB Q1 SD CFB VOUT RFB1 COUT RFB2 V ↓ IOUT Figure 10 Seiko Instruments Inc. 13 S-8365/8366 Series Operation STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 1. Switching control method 1.1 PWM control (S-8365 Series) The S-8365 Series is a switching regulator controller that uses a pulse width modulation method (PWM). In conventional PWM control switching regulators, pulses are skipped when the output load current is small, causing a fluctuation in the ripple frequency of the output voltage, resulting in increased ripple voltage. For the S-8365 Series, although the pulse width changes from 0% to 90% in accordance with each load current (or 0% to 85% for 1.2 MHz products), since the switching frequency does not change, the ripple voltage generated due to switching can be eliminated by filtering. The ripple voltage can thus be lowered in the wide input voltage and load current ranges. 1.2 PWM / PFM switching control (S-8366 Series) The S-8366 Series switching regulator controller automatically switches between the pulse width modulation method (PWM) and pulse frequency modulation method (PFM) according to the load current. A low ripple power can be supplied by operating on PWM control for which the pulse width changes from 28% to 90% (or 28% to 85% for 1.2 MHz products) in the range where the output load current is large. The S-8366 Series operates on PFM control when the output load current is small and the fixed pulses which have the width of 28% are skipped according to the load current amount. Therefore, the oscillation circuit intermittently oscillates, reducing the self-current consumption. This avoids decreased efficiency when the output load current is small. The point at which PWM control switches to PFM control varies depending on the external element (inductor, diode, etc.), input voltage value, and output voltage value, and this method achieves high efficiency in the output load current of about 100 µA. 2. Soft-start function The S-8365/8366 Series has a soft-start circuit. The output voltage (VOUT) gradually rises after power-on or startup when the ON/OFF pin is set to high, suppressing rush current and overshooting the output voltage. The soft-start time (tSS) for the S-8365/8366 Series is defined as the time from startup until VOUT reaches 90% of the output set voltage value (VOUT(S)). A reference voltage adjustment method is used as the soft-start method and the reference voltage gradually rises from 0 V after soft-start. A soft-start performs by controlling the FB pin voltage so that it follows the rise of the reference voltage. After the reference voltage rises once, it is reset to 0 if the ON/OFF pin voltage drops to low, the power supply voltage drops to the UVLO detection voltage, or the S-8365/8366 Series enters the short-circuit protection latch status. A soft-start is performed regardless of conditions when resuming step-up operation. 14 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 3. Shutdown pin This pin stops or starts step-up operations. 3.1 Without ON/OFF pin pull-down When this pin is set to the low level, the voltage of the EXT pin is fixed to 0 V, and the external transistor and all internal circuits stop, substantially reducing the current consumption. Do not use the ON/OFF pin in a floating state because it is set up as shown in Figure 11 and is not internally pulled up or down. Do not apply a voltage of between 0.3 V and 0.75 V to the ON/OFF pin because applying such a voltage increases the current consumption. If the ON/OFF pin is not used, connect it to the VDD pin. Table 11 CR Oscillation Output Voltage Circuit “H” Operates Set value ≅VIN*1 “L” Stops Voltage obtained by subtracting the voltage drop due to the DC resistance of the inductor and the diode forward voltage from VIN. ON/OFF pin VDD *1. ON/OFF VSS Figure 11 3.2 With ON/OFF pin pull-down When the ON/OFF pin is set to the low level, the voltage of the EXT pin is fixed to 0 V, and the external transistor and all internal circuits stop substantially reducing the current consumption. The ON/OFF pin is set up as shown in Figure 12 and is internally pulled down by using the depression transistor, so all circuits stop even if this pin is floating. Do not apply a voltage of between 0.3 V and 0.75 V to the ON/OFF pin because applying such a voltage increases the current consumption. If the ON/OFF pin is not used, connect it to the VDD pin. Table 12 ON/OFF Pin CR Oscillation Circuit Output Voltage *1. “H” Operates Set value ≅VIN*1 “L” Stops ≅VIN*1 High-Z Stops Voltage obtained by subtracting the voltage drop due to the DC resistance of the inductor and the diode forward voltage from VIN. VDD ON/OFF VSS Figure 12 Seiko Instruments Inc. 15 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER 4. Timer latch type short-circuit protection (products with short-circuit protection function) The S-8365/8366 Series incorporates a timer latch type short-circuit protection circuit that stops switching operation if the output short circuits for a certain time or more. Connect a capacitor (CSP) to the CSP pin to set the delay time of this circuit. The S-8365/8366 Series operates on the maximum duty if the output voltage drops due to output short-circuiting or other factors. When it enters the maximum duty status, charging the constant current to CSP is started. If this status is held for the short-circuit protection delay time or more, the voltage of the CSP pin exceeds the reference voltage and the IC enters the latch mode. Note that switching operation stops in latch mode but the internal circuits normally operate, which differs from the power-off status. The constant current is continuously charged to CSP even in latch mode, so the voltage of the CSP pin rises to the VDD level. To reset the latch mode of short-circuit protection, lower VDD to the UVLO detection voltage or lower or set the ON/ OFF pin to the low level. Rev.1.1_00 Input voltage (VDD) UVLO release UVLO detection Output load Reference voltage Short-circuit state CSP pin voltage (VCSP) Latch mode 50 ms (CSP = 0.1 µF) Normal state Short circuit protection delay time Latch period Short-circuit protection Short-circuit protection delay time delay time Reset period Reset period Figure 13 5. UVLO function (products with UVLO function) The S-8365/8366 Series has a UVLO (undervoltage lockout) circuit for avoiding IC malfunctions due to power supply voltage drops. The S-8365/8366 Series stops switching operation upon UVLO detection and retains the external transistor in the off state. After entering the UVLO detection status once, the soft-start function is reset. Note, however, that the other internal circuits operate normally and that the status differs from the power-off status. 16 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Operation Principles The S-8365/8366 Series is a step-up switching regulator controller. Figure 14 shows the basic circuit diagram. Step-up switching regulators start current supply by the input voltage (VIN) when the Nch power MOS FET is turned on and holds energy in the inductor at the same time. When the Nch power MOS FET is turned off, the CONT pin voltage is stepped up to discharge the energy held in the inductor and the current is discharged to VOUT through the diode. When the discharged current is stored in CL, a voltage is generated, and the potential of VOUT increases until the voltage of the FB pin reaches the same potential as the internal reference voltage. For the PWM control method, the switching frequency (fOSC) is fixed and the VOUT voltage is held constant according to the ratio of the ON time and OFF time (ON duty) of the Nch power MOS FET in each period. For the PWM control method, the VOUT voltage is held constant by controlling the ON time. In the S-8366 Series, the Nch power MOS FET is turned on when the fixed duty cycle is 28% for the PFM control method. When energy is discharged to VOUT once and the VOUT potential exceeds the set value, the Nch power MOS FET stays in the off status until VOUT decreases to the set value or less due to the load discharge. Time VOUT decreases to the set value or less depends on the amount of load current, so, the switching frequency varies depending on this current. I2 IOUT VOUT L VIN I1 CONT SD Nch power MOS FET EXT VSS FB COUT RL Figure 14 Basic Circuit of Step-up Switching Regulator The ON duty in the current continuous mode can be calculated by using the equation below. Use the S-8365/8366 Series in the range where the ON duty is less than the maximum duty. Note that the products with short-circuit protection is set in the timer-latch status if the maximum duty lasts the short-circuit protection delay time (tPRO) or more. The maximum duty is 85% typ. for 1.2 MHz products and 90% for 600 kHz products. ON duty = 1 −  VIN VOUT + VD*1   × 100 [%] The ON time (tON) can be calculated by using the following equation : 1 × ON duty tON = f OSC VIN 1  ·········· (1) = × 1 − VOUT + VD*1   f OSC *1. VD : Forward voltage of diode Seiko Instruments Inc. 17 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER 1. Continuous current mode The following explains the current that flows into the inductor when the step-up operation stabilizes in a certain status and IOUT is sufficiently large. When the Nch power MOS FET is turned on, current (I1) flows in the direction shown in Figure 14. The inductor current (IL) at this time gradually increases in proportion with the ON time (tON) of the Nch power MOS FET. Current change of inductor within tON : ∆IL(ON) = IL max. − IL min. VIN = L × tON When the Nch power MOS FET is turned off, the voltage of the CONT pin is stepped up to VOUT + VD and the voltage on both ends of the inductor becomes VOUT + VD − VIN. However, it is assumed here that VOUT >> VD and VD is ignored. Current change of inductor within tOFF : VOUT − VIN ∆IL(OFF) = × tOFF L The input power equals the output power in an ideal situation where there is no loss by components. IIN(AV) : PIN = POUT IIN(AV) × VIN = IOUT × VOUT VOUT × IOUT .................. (2) ∴IIN(AV) = V IN The current that flows in the inductor consists of a ripple current that changes due to variation over time and a direct current. From Figure 15 : IIN(AV) : IIN(AV) = IIN(DC) + ∆IL 2 VOUT − VIN = IIN(DC) + × tOFF 2×L VIN = IIN(DC) + × tON.......... (3) 2×L Rev.1.1_00 Above, the continuous mode is the operation mode when IIN(DC) > 0 as shown in Figure 15 and the inductor current continuously flows. While the output current (IOUT) continues to decrease, IIN(DC) reaches 0 as shown in Figure 16. This point is the critical point of the continuous mode. As shown in equations (2) and (3), the direct current component (IIN(DC)) depends on IOUT. IOUT(0) when IIN(DC) reaches 0 (critical point) : IOUT(0) = tON × VIN2 2 × L × VOUT tON can be calculated using equation (1). When the output current decreases below IOUT(0), the current flowing in the inductor stops flowing in the tOFF period as shown in Figure 17. This is the discontinuous mode. 18 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series IL IL max. IIN(AV) IL min. IIN(DC) t tON t = 1 / fOSC Figure 15 Continuous Mode (Current Cycle of Inductor Current IL) tOFF IL IL max. IL min. tON t = 1 / fOSC Figure 16 t tOFF Critical Point (Current Cycle of Inductor Current IL) IL IL max. IL min. tON t = 1 / fOSC Figure 17 t tOFF Discontinuous Mode (Current Cycle of Inductor Current IL) Seiko Instruments Inc. 19 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 External Parts Selection 1. Inductor The recommended L value of the S-8365/8366 Series is 2.2 µH for 1.2 MHz products and 3.3 µH for 600 kHz products. Note the following when changing the inductance. The inductance (L) has a strong influence on the maximum output current (IOUT) and efficiency (η). The inductor peak current (IPK) increases when L is decreased, which improves the circuit stability and increases the IOUT users can obtain. If L is decreased further, the ability of the external transistor to drive the current becomes insufficient, reducing the efficiency and decreasing IOUT. The loss due to the IPK of the switching transistor is decreased by increasing L and the efficiency maximizes at a certain L value. If L is increased further, the loss due to the serial resistance of the inductor increases, lowering the efficiency. Caution When selecting an inductor, be careful about its allowable current. If a current exceeding the allowable current flows through the inductor, magnetic saturation occurs, substantially lowering the efficiency and destroying ICs due to large current. Therefore, select an inductor such that IPK does not exceed the allowable current. The following equations express IPK in the ideal statuses in the discontinuous and continuous modes : 2 × IOUT × (VOUT + VD*2 − VIN) fOSC*1 × L *2 VOUT + VD (VOUT + VD*2 − VIN) × VIN × IOUT + IPK = VIN 2 × (VOUT + VD*2) × fOSC*1 × L IPK = *1. *2. (Discontinuous mode) (Continuous mode) fOSC : oscillation frequency VD is the forward voltage of a diode. The reference value is 0.4 V. However, current exceeding the above equation flows because conditions are practically not ideal. Perform sufficient evaluation with actual application. Table 13 Typical Inductors (for Small Low-Profile Devices) L Value 2.2 µH 3.3 µH 2.2 µH 3.3 µH 2.2 µH 3.3 µH 2.2 µH 3.3 µH 2.2 µH 3.3 µH DC Resistance 0.092 Ω max. 0.130 Ω max. 0.190 Ω max. 0.304 Ω max. 0.175 Ω max. 0.285 Ω max. 0.114 Ω max. 0.168 Ω max. 0.0955 Ω max. 0.154 Ω max. Rated Current 1.1 A max. 0.88 A max. 1.2 A max. 1.0 A max. 1.1 A max. 0.88 A max. 1.1 A max. 0.87 A max. 1.4 A max. 1.0 A max. Dimensions (L × W × H) [mm] 2.8 × 3.0 × 1.0 2.8 × 3.0 × 1.0 2.5 × 2.0 × 1.0 2.5 × 2.0 × 1.0 3.0 × 3.0 × 0.8 3.0 × 3.0 × 0.8 3.0 × 3.0 × 1.0 3.0 × 3.0 × 1.0 3.0 × 3.0 × 1.2 3.0 × 3.0 × 1.2 Manufacture Product Name VLF3010ST-2R2M VLF3010ST-3R3M VLS252010-2R2M VLS252010-3R3M LPS3008-222ML LPS3008-332ML NR3010T2R2M NR3010T3R3M CDRH2D11BNP-2R2N CDRH2D11BNP-3R3N Table 14 TDK Corporation Coilcraft, Inc. Taiyo Yuden Co., Ltd. Sumida Corporation Typical Inductors (for Large Current, High Step-up Rate) L Value 2.2 µH 3.3 µH 2.2 µH 3.3 µH 2.2 µH DC Resistance 0.040 Ω max. 0.060 Ω max. 0.045 Ω max. 0.055 Ω max. 0.020 Ω max. Rated Current 3.4 A max. 2.7 A max. 4.1 A max. 3.6 A max. 4.2 A max. Dimensions (L × W × H) [mm] 5.0 × 5.2 × 2.2 5.0 × 5.2 × 2.2 6.0 × 6.0 × 2.4 6.0 × 6.0 × 2.4 6.0 × 6.0 × 2.8 Manufacture TDK Corporation Coilcraft, Inc. Taiyo Yuden Co., Ltd. Product Name LTF5022T-2R2M LTF5022T-3R3M LPS6225-222ML LPS6225-332ML NR6028T2R2M 20 Seiko Instruments Inc. Rev.1.1_00 2. Diode STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Use an externally mounted that meets the following conditions. • Low forward voltage (Schottky barrier diode or similar type) • High switching speed • Reverse withstand voltage of VOUT + spike voltage or more • Rated current of IPK or more 3. Input capacitor (CIN) and output capacitor (COUT) To improve efficiency, an input capacitor (CIN) lowers the power supply impedance and averages the input current. Select CIN according to the impedance of the power supply used. The recommended capacitance is 10 µF for the S-8365/8366 Series. An output capacitor (COUT), which is used to smooth the output voltage, requires a capacitance larger than that of the step-down type because the current is intermittently supplied from the input to the output side in the step-up type. A 22 µF ceramic capacitor is recommended for the S-8365/8366 Series. However, a higher capacitance is recommended if the output voltage is high or the load current is large. If the output voltage or load current is low, about 10 µF can be used without problems. Select COUT after sufficient evaluation with actual application. A ceramic capacitor can be used for both the input and output. 4. Capacitor for setting short-circuit protection delay time (CSP) (products with short-circuit protection) For the S-8365/8366 Series, the short-circuit protection delay time can be set to any value by using an external capacitor. Connect the capacitor between the CSP and VSS pins. Select the capacitor value according to the equation below and Figure 18. Note, however, that the equation and figure show a theoretical value assuming an ideal capacitor value and typ. IC conditions. Variations of the capacitor and IC are not considered. For the IC variations, see the short-circuit protection delay time (tPRO) in “ Electrical Characteristics”. CSP [µF] ≅ tPRO [ms] × 1.2 × 10−3 0.6 tPRO [ms] 120 100 80 60 40 20 0 0 0.05 0.10 0.15 0.20 0.25 CSP [µF] Figure 18 CSP vs. tPRO Seiko Instruments Inc. 21 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER 5. External transistor A bipolar (NPN) or enhanced (Nch) MOS FET transistor can be used as an external transistor. 5.1 Bipolar NPN type The driving ability to increase output current by using a bipolar transistor is determined based on the hFE value and Rb value of the bipolar transistor. Figure 19 shows the peripheral circuit. Rev.1.1_00 VDD Pch Cb 2200 pF IPK EXT Nch Rb 1 kΩ Figure 19 External Transistor Peripheral Circuit The recommended Rb value is around 1 kΩ. Calculate the required base current (Ib) based on the hFE value of IPK , and then select an Rb value smaller than that determined using: the bipolar transistor by using Ib = h FE VDD − 0.7 0.4 Rb = － Ib I EXTH Smaller Rb values increase the output current, but decrease the efficiency. Actually, the current might flow on pulses or the VDD or VSS voltage might drop due to wiring resistance, so determine the optimum value based on experimentation. Inserting a speed-up capacitor (Cb) in parallel with the Rb resistor as shown in Figure 19 reduces switching loss and increases efficiency. 1 . Select a speed-up capacitor for which the Cb value satisfies Cb ≤ 2 × π × Rb × fOSC × 0.7 Actually, however, the optimum Cb value varies depending on the characteristics of the bipolar transistor used, so determine the optimum value based on experimentation. 5.2 Enhanced MOS FET type Use an Nch power MOS FET. A MOS FET that has low ON-resistance (RON) and input capacitance (CISS) is ideal for gaining efficiency. The ON-resistance and input capacitance generally have a tradeoff relationship. ON-resistance is efficient in the range where the output current is high with relatively low frequency switching, and input capacitance is efficient in the range where the output current is medium to low with high frequency switching. Therefore, select a MOS FET for which the ON-resistance and input capacitance are optimum under your usage conditions. The input voltage (VDD) is supplied as the gate voltage of a MOS FET, so select a MOS FET for which the gate withstand voltage is higher than the maximum value used for the input voltage, and for which the drain withstand voltage is greater than or equal to the output voltage (VOUT) + the forward voltage of the diode (VD). If a MOS FET for which the threshold value is near the UVLO detection voltage is used, a high current flows upon power-on, and, in the worst case, the output voltage might not increase and the timer latch type short-circuit protection circuit might operate. Therefore, select a MOS FET for which the threshold value is sufficiently lower than the UVLO detection voltage. 22 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 6. Output voltage setting resistors (RFB1, RFB2), capacitor for phase compensation (CFB) For the S-8365/8366 Series, VOUT can be set to any value by using external divider resistors. Connect the divider resistors between the VOUT and VSS pins. Because VFB = 0.6 V typ., VOUT can be calculated by using the following equation : VOUT = RFB1 + RFB2 × 0.6 RFB2 Connect divider resistors RFB1 and RFB2 as close to the IC as possible to minimize the effects of noise. If noise has an effect, adjust the values of RFB1 and RFB2 so that RFB1 + RFB2 < 100 kΩ. CFB, which is connected in parallel with RFB1, is a capacitor for phase compensation. By setting the zero point (the phase feedback) by adding capacitor CFB to output voltage setting resistor RFB1 in parallel, the phase margin increases, improving the stability of the feedback loop. To effectively use the feedback portion of the phase based on the zero point, define CFB by using the following equation : CFB ≅ L × COUT VOUT ×V 3 × RFB1 DD This equation is only a guide. The following explains the optimum setting. To efficiently use the feedback portion of the phase based on the zero point, specify settings so that the phase feeds back at the zero point frequency (fzero) of RFB1 and CFB according to the phase delay at the pole frequency (fpole) of L and COUT. The zero point frequency is generally set slightly higher than the pole frequency. The following equations are used to determine the pole frequency of L and COUT and the zero point frequency set using RFB1 and CFB. fpole ≅ 1 VDD ×V OUT L × COUT 1 fzero ≅ 2 × π × RFB1 × CFB 2×π× The transient response can be improved by setting the zero point frequency in a lower frequency range. If, however, the zero point frequency is set in a significantly lower range, the gain increases in the range of high frequency and the phase margin decreases. This might result in unstable operation. Determine the proper value after sufficient evaluation with actual application. The typical constants based on our evaluation are shown in Table 15. Table 15 VOUT(S) [V] 1.8 1.8 3.32 3.32 5.0 5.0 9.0 9.0 15.0 15.0 VDD [V] 1.2 1.2 1.2 1.2 1.8 1.8 3.3 3.3 3.3 3.3 Example of Constant for External Parts RFB1 [kΩ] 30 30 68 68 110 110 210 210 360 360 RFB2 [kΩ] 15 15 15 15 15 15 15 15 15 15 CFB [pF] 100 82 82 68 68 56 39 33 39 33 L [µH] 3.3 2.2 3.3 2.2 3.3 2.2 3.3 2.2 3.3 2.2 COUT [µF] 10 10 10 10 22 22 22 22 22 22 Seiko Instruments Inc. 23 S-8365/8366 Series Standard Circuit STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 (1) With short-circuit protection (SNT-6A, SOT-23-6) L SD VOUT VDD UVLO circuit Triangular wave oscillation circuit PWM comparator Error amplifier + − CFB RFB1 FB M1 EXT PWM control, or PWM / PFM switching control circuit Timer latch short-circuit protection circuit + − RFB2 VIN CIN 0.1 µF ON/OFF ON/OFF circuit CSP Reference voltage with soft-start circuit COUT VSS Ground point Figure 20 (2) Without short-circuit protection (SOT-23-5) L SD VOUT VDD UVLO circuit Triangular wave oscillation circuit PWM comparator Error amplifier + − CFB RFB1 FB M1 EXT PWM control, or PWM / PFM switching control circuit + − RFB2 VIN CIN 0.1 µF ON/OFF ON/OFF circuit Reference voltage with soft-start circuit COUT VSS Ground point Figure 21 24 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series (3) Low input voltage (SOT-23-5) L IC internal power supply SD VOUT Triangular wave oscillation circuit Error amplifier + − VDD CFB RFB1 FB Q1 Cb PWM comparator PWM control, or PWM / PFM switching control circuit + − Rb EXT RFB2 VIN CIN ON/OFF ON/OFF circuit Reference voltage with soft-start circuit COUT 0.1 µF VSS Ground point Figure 22 Caution The above connection diagram and constant will not guarantee successful operation. Perform thorough evaluation using an actual application to set the constants. Precaution • Mount external capacitors and inductor as close as possible to the IC. Set single point ground. • Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current flows at the time of a power supply injection. Because these largely depend on the inductor, the capacitor and impedance of power supply used, fully check them using an actually mounted model. • The 0.1 µF capacitor connected between the VDD and VSS pins is a bypass capacitor. It stabilizes the power supply in the IC when application is used with a heavy load, and thus effectively works for stable switching regulator operation. Allocate the bypass capacitor as close to the IC as possible, prioritized over other parts. • Although the IC contains a static electricity protection circuit, static electricity or voltage that exceeds the limit of the protection circuit should not be applied. • The power dissipation of the IC greatly varies depending on the size and material of the board to be connected. Perform sufficient evaluation using an actual application before designing. • SII claims no responsibility for any disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party. Seiko Instruments Inc. 25 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 Application Circuits Application circuits are examples. They may always not guarantee successful operation. 1. External parts for application circuits Table 16 Part Part Name NR6028T-2R2M LTF5022T-3R3M Inductor VLF3010ST-2R2M VLF3010ST-3R3M RB070M-30TR Diode RB050LA-30 Characteristics of External Parts Manfuacturer Characteristics *1 2.2 µH, DCR = 0.020 Ω, IMAX*2 = 4.2 A, Taiyo Yuden Co., Ltd. L × W × H = 6.0 × 6.0 × 2.8 mm 3.3 µH, DCR*1 = 0.060 Ω, IMAX*2 = 2.7 A, L × W × H = 5.0 × 5.2 × 2.2 mm 2.2 µH, DCR*1 = 0.114 Ω, IMAX*2 = 1.1 A, TDK Corporation L × W × H = 3.0 × 3.0 × 1.0 mm *1 *2 3.3 µH, DCR = 0.168 Ω, IMAX = 0.87 A, L × W × H = 3.0 × 3.0 × 1.0 mm VF*3 = 0.44 V, IF*4 = 1.5 A, VR*5 = 30 V L × W × H = 3.5 × 1.6 × 0.9 mm Rohm Co., Ltd. *3 *4 *5 VF = 0.45 V, IF = 3.0 A, VR = 30 V L × W × H = 4.7 × 2.6 × 1.05 mm VDSS*6 = 20 V, VGSS*7 = ±8 V, ID*8 = 5.0 A, VISHAY QG*9 = 12 nC max. INTERTECHNOLOGY, RDS(ON)*10 = 0.047 Ω max. (VGS*11 = 2.5 V) INC. L × W × H = 2.9 × 2.64 × 1.12 mm *12 *13 *14 VCEO = 12 V, VEBO = 6 V, IC = 1.5 A, *15 hFE = 270 min./680 max. (VCE/IC = 2 V/200 mA) Rohm Co., Ltd. L × W × H = 2.0 × 1.25 × 0.9 mm 10 µF, EDC*16 = 6.3 V, X5R, L × W × H = 1.6 × 0.8 × 0.95 mm 10 µF, EDC*16 = 10 V, X5R, L × W × H = 2.0 × 1.25 × 0.95 mm Taiyo Yuden Co., Ltd. 10 µF, EDC*16 = 16 V, X5R, L × W × H = 3.2 × 1.6 × 1.25 mm 10 µF, EDC*16 = 25 V, X7R, L × W × H = 3.2 × 2.5 × 2.1 mm 10 µF, EDC*16 = 10 V, X5R, L × W × H = 2.0 × 1.25 × 1.45 mm TDK Corporation *16 0.1 µF, EDC = 16 V, X7R, L × W × H = 1.0 × 0.5 × 0.55 mm Murata Manufacturing, 10 µF, EDC*16 = 10 V, X7R, Co., Ltd. L × W × H = 3.2 × 1.6 × 1.6 mm Si2312BDS Transistor 2SD2652 JMK107BJ106MA-T LMK212BJ106KD-T EMK316BJ106KF-T Capacitor TMK325B7106MN-T C2012X5R1A106KT C1005X7R1C104KT GRM31CR71A106KA * 1. DCR : * 2. IMAX : * 3. V F : * 4. I F : * 5. V R : * 6. VDSS : * 7. VGSS : * 8. I D : * 9. Q G : *10. RDS(ON ): *11. VGS : *12. VCEO : *13. VEBO : *14. IC : *15. hFE : *16. EDC : 26 DC resistance Maximum allowable current Forward voltage Forward current Reverse voltage Drain-source voltage (during short-circuiting between the gate and source) Gate-source voltage (during short-circuiting between the drain and source) Drain current Gate charge On-resistance between the drain and source Gate-source voltage Collector-emitter voltage Emitter-base voltage Collector current Direct current gain Rated voltage Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 2. Power supply for LCD Following shows a circuit example and its characteristics for driving an LCD panel (with 9 V and 15 V outputs). L M1 EXT CIN CDD ON/OFF S-8365/8366 Series VSS FB CSP CSP RFB2 RFB1 CFB COUT SD VOUT VDD Figure 23 Circuit Example (Power Supply for LCD) Table 17 Condition 1 2 3 4 Output Voltage 9V 9V 15 V 15 V Table 17 Condition 1 2 3 4 External Part Examples (Power Supply for LCD) (1 / 2) IC Product Name S-8365AABBA S-8366AABBA S-8365AABBA S-8366AABBA L Product Name NR6028T2R2M NR6028T2R2M NR6028T2R2M NR6028T2R2M M1 Product Name Si2312BDS Si2312BDS Si2312BDS Si2312BDS SD Product Name RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 External Part Examples (Power Supply for LCD) (2 / 2) COUT Product Name EMK316BJ106KF-T × 2 EMK316BJ106KF-T × 1 TMK325B7106MN-T × 2 TMK325B7106MN-T × 1 RFB1 280 kΩ 280 kΩ 360 kΩ 360 kΩ RFB2 20 k Ω 20 k Ω 15 k Ω 15 k Ω CFB 22 pF 27 pF 27 pF 33 pF CDD 0.1 µF 0.1 µF 0.1 µF 0.1 µF CIN Product Name LMK212BJ106KG-T LMK212BJ106KG-T LMK212BJ106KG-T LMK212BJ106KG-T Caution The above connection will not guarantee successful operation. Perform thorough evaluation using an actual application to set the constant. Seiko Instruments Inc. 27 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 3. Output Characteristics of Power Supply for LCD Following shows the output current (IOUT) vs. efficiency (η) and output current (IOUT) vs. output voltage (VOUT) characteristics for conditions 1 to 4 in Table 17. Condition 1 100 90 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT [mA] 100 1000 VOUT [V] η [%] VIN = 2.0 V VIN = 3.3 V VIN = 3.6 V 9.2 9.0 8.8 8.6 8.4 8.2 8.0 7.8 VIN = 2.0 V VIN = 3.3 V VIN = 3.6 V 0.1 1 10 IOUT [mA] 100 1000 Condition 2 100 90 80 70 60 50 40 30 20 10 0 0.1 η [%] VIN = 2.0 V VIN = 3.3 V VIN = 3.6 V 9.2 9.0 8.8 8.6 8.4 8.2 8.0 7.8 0.1 1 VOUT [V] VIN = 2.0 V VIN = 3.3 V VIN = 3.6 V 1 10 IOUT [mA] 100 1000 10 IOUT [mA] 100 1000 Condition 3 100 90 80 70 60 50 40 30 20 10 0 15.5 VOUT [V] η [%] VIN = 3.3 V VIN = 3.6 V VIN = 5.5 V 15.0 14.5 14.0 13.5 VIN = 3.3 V VIN = 3.6 V VIN = 5.5 V 0.1 1 10 IOUT [mA] 100 1000 13.0 0.1 1 10 IOUT [mA] 100 1000 Condition 4 100 90 80 70 60 50 40 30 20 10 0 0.1 η [%] 15.5 15.0 VIN = 5.5 V VIN = 3.6 V VIN = 3.3 V VOUT [V] 14.5 14.0 13.5 13.0 VIN = 3.3 V VIN = 3.6 V VIN = 5.5 V 1 10 IOUT [mA] 100 1000 0.1 1 10 IOUT [mA] 100 1000 28 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 4. Power supply for high output current Following shows a circuit example and its characteristics for outputting 3.3 V from two dry cells (1.8 V) and satisfying IOUT = 800 mA. L M1 EXT CIN CDD ON/OFF S-8365/8366 Series VSS FB CSP CSP RFB2 CFB RFB1 COUT SD VOUT VDD Figure 24 Circuit Example (Power Supply for High Output Current) Table 18 Condition 1 2 3 4 Table 18 Condition 1 2 3 4 External Part Examples (Power Supply for High Output Current) (1 / 2) Output IC Product Name S-8365AABBA S-8365ABBBA S-8366AABBA S-8366ABBBA L Product Name NR6028T2R2M LTF5022-3R3M NR6028T2R2M LTF5022-3R3M M1 Product Name Si2312BDS Si2312BDS Si2312BDS Si2312BDS SD Product Name RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 Voltage 3.32 V 3.32 V 3.32 V 3.32 V External Part Examples (Power Supply for High Output Current) (2 / 2) COUT Product Name GRM31CR71A106KA × 2 GRM31CR71A106KA × 2 GRM31CR71A106KA × 2 GRM31CR71A106KA × 2 RFB1 68 kΩ 68 kΩ 68 kΩ 68 kΩ RFB2 15 k Ω 15 k Ω 15 k Ω 15 k Ω CFB 68 pF 82 pF 68 pF 82 pF CDD 0.1 µF 0.1 µF 0.1 µF 0.1 µF CIN Product Name C2012X5R1A106KT C2012X5R1A106KT C2012X5R1A106KT C2012X5R1A106KT Caution The above connection will not guarantee successful operation. Perform thorough evaluation using an actual application to set the constant. Seiko Instruments Inc. 29 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 5. Output characteristics of power supply for high output current Following shows the output current (IOUT) vs. efficiency (η) and output current (IOUT) vs. output voltage (VOUT) characteristics for conditions 1 to 4 in Table 18. Condition 1 100 90 80 70 60 50 40 30 20 10 0 VOUT [V] VIN = 1.8 V VIN = 2.7 V 0.1 1 10 100 IOUT [mA] 1000 10000 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 0.1 1 η [%] VIN = 1.8 V VIN = 2.7 V 10 100 IOUT [mA] 1000 10000 Condition 2 100 VIN = 1.8 V 90 80 VIN = 2.7 V 70 60 50 40 30 20 10 0 0.1 1 10 100 IOUT [mA] η [%] 1000 10000 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 VOUT [V] VIN = 1.8 V VIN = 2.7 V 0.1 1 10 100 IOUT [mA] 1000 10000 Condition 3 100 90 80 70 60 50 40 30 20 10 0 0.1 η [%] VIN = 1.8 V VIN = 2.7 V 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 0.1 1 VOUT [V] VIN = 1.8 V VIN = 2.7 V 1 10 100 IOUT [mA] 1000 10000 10 100 IOUT [mA] 1000 10000 Condition 4 100 90 80 70 60 50 40 30 20 10 0 0.1 η [%] VIN = 1.8 V VIN = 2.7 V 1 10 100 IOUT [mA] 1000 10000 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 VOUT [V] VIN = 1.8 V VIN = 2.7 V 0.1 1 10 100 IOUT [mA] 1000 10000 30 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 6. Circuit for low power supply voltage applications Following shows a circuit example that starts up by using a dry cell (1.2 V) and its characteristics. L Cb VDD EXT CIN CDD ON/OFF S-8365/8366 Series VSS FB RFB2 Rb Q1 RFB1 CFB COUT SD VOUT Figure 25 Circuit Example (Circuit for Low Power Supply Voltage Applications) Table 19 Condition 1 2 Table 19 Condition 1 2 External Part Examples (Circuit for Low Power Supply Voltage Applications) (1 / 2) Output Voltage 3.32 V 3.32 V IC Product Name S-8366AAAAA S-8366ABAAA Q1 L Product Name VLF3010ST-2R2M VLF3010ST-3R3M Product Name 2SD2652 2SD2652 RB070M-30TR RB070M-30TR SD Product Name External Part Examples (Circuit for Low Power Supply Voltage Applications) (2 / 2) CIN Product Name JMK107BJ106MA-T JMK107BJ106MA-T COUT Product Name LMK212BJ106KD-T × 1 LMK212BJ106KD-T × 1 RFB1 68 kΩ 68 kΩ RFB2 15 k Ω 15 k Ω CFB 68 pF 82 pF CDD 0.1 µF 0.1 µF Caution The above connection will not guarantee successful operation. Perform thorough evaluation using an actual application to set the constant. Seiko Instruments Inc. 31 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 7. Output characteristics of circuits for low power supply voltage applications Following shows the output current (IOUT) vs. efficiency (η) and output current (IOUT) vs. output voltage (VOUT) characteristics for conditions 1 and 2 in Table 19. Condition 1 90 80 70 60 50 40 30 20 10 0 0.1 1 10 IOUT [mA] 100 1000 VOUT [V] η [%] VIN = 0.9 V VIN = 1.2 V VIN = 1.5 V 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 VIN = 0.9 V VIN = 1.2 V VIN = 1.5 V 0.1 1 10 IOUT [mA] 100 1000 Condition 2 90 80 VIN = 0.9 V 70 VIN = 1.2 V 60 VIN = 1.5 V 50 40 30 20 10 0 0.1 1 η [%] 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 0.1 1 10 IOUT [mA] 100 1000 VOUT [V] VIN = 0.9 V VIN = 1.2 V VIN = 1.5 V 10 IOUT [mA] 100 1000 32 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Characteristics (Typical Data) 1. Examples of Major Power Supply Dependence Characteristics (Ta = 25°C) (1) Current consumption during operation (ISS1) vs. Input voltage (VIN) 700 600 1.2 MHz 500 400 300 600 kHz 200 100 0 1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN [V] ISS1 [µA] (2) Current consumption during shutdown (ISSS) vs. Input voltage (VIN) 1.0 0.8 ISSS [µA] 0.6 0.4 0.2 0.0 1.8 2.0 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 (3) Oscillation frequency (fosc) vs. Input voltage (VIN) fOSC = 1.2 MHz 1.4 fOSC [MHz] fOSC = 600 kHz 700 1.2 1.1 1.0 1.8 2.0 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 fOSC [kHz] 1.3 650 600 550 500 1.8 2.0 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 (4) Maximum duty ratio (MaxDuty) vs. Input voltage (VIN) 100 MaxDuty [%] 95 90 85 80 75 70 1.8 2.0 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 1.2 MHz 600 kHz (5) Soft-start time (tSS) vs. Input voltage (VIN) 10 9 8 7 6 5 4 3 2 1 0 1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN [V] tSS [ms] (6) PWM / PFM switching duty ratio (PFMDuty) vs. Input voltage (VIN) 40 35 30 25 20 15 10 5 0 1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN [V] PFMDuty [%] Seiko Instruments Inc. 33 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 (7) High level input voltage (VSH) vs. Input voltage (VIN) 0.8 0.7 (8) Low level input voltage (VSL) vs. Input voltage (VIN) 0.8 0.7 VSH [V] 0.5 0.4 0.3 1.8 2.0 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 VSL [V] 0.6 0.6 0.5 0.4 0.3 1.8 2.0 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 (9) FB voltage (VFB) vs. Input voltage (VIN) 0.8 0.7 0.6 0.5 0.4 0.3 1.8 2.0 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 (10) Short-circuit protection delay time (tPRO) vs. Input voltage (VIN) CSP = 0.1 µF 80 70 60 50 40 30 20 10 0 1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN [V] tPRO [ms] IEXTH [mA] (11) EXT pin output current “H” (IEXTH) vs. Input voltage (VIN) −300 −250 VFB [V] (12) EXT pin output current “L” (IEXTL) vs. Input voltage (VIN) 300 250 200 150 100 50 0 1.8 2.0 IEXTH [mA] −200 −150 −100 −50 0 1.8 2.0 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 2.5 3.0 3.5 4.0 VIN [V] 4.5 5.0 5.5 34 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 2. Examples of Major Temperature Characteristics (Ta = −40 to 85°C) (1) Current consumption during operation (ISS1) vs. Temperature (Ta) fOSC = 1.2 MHz 700 700 VDD = 5.5 V 600 600 VDD = 5.5 V VDD = 3.6 V 500 500 VDD = 2.0 V VDD = 3.6 V 400 400 300 300 VDD = 2.0 V 200 200 100 100 0 0 −40 −25 0 25 50 75 85 −40 −25 0 Ta [°C] ISS1 [µA] ISS1 [µA] fOSC = 600 kHz 25 Ta [°C] 50 75 85 (2) Current consumption during shutdown (ISSS) vs. Temperature (Ta) 1.0 0.9 0.8 0.7 0.6 VDD = 5.5 V 0.5 0.4 VDD = 3.6 V 0.3 VDD = 2.0 V 0.2 0.1 0.0 −40 −25 0 25 50 75 85 Ta [°C] ISSS [µA] fOSC [MHz] 1.2 1.1 1.0 −40 −25 0 25 Ta [°C] 50 75 85 fOSC [kHz] (3) Oscillation frequency (fOSC) vs. Temperature (Ta) fOSC = 1.2 MHz 1.4 VDD = 5.5 V VDD = 3.6 V 1.3 VDD = 2.0 V fOSC = 600 kHz 700 650 600 550 500 VDD = 5.5 V VDD = 3.6 V VDD = 2.0 V −40 −25 0 25 Ta [°C] 50 75 85 MaxDuty [%] MaxDuty [%] (4) Maximum duty ratio (MaxDuty) vs. Temperature (Ta) fOSC = 1.2 MHz 100 VDD = 5.5 V 95 VDD = 3.6 V 90 VDD = 2.0 V 85 80 75 70 −40 −25 0 25 Ta [°C] 50 75 85 fOSC = 600 kHz 100 95 90 85 80 75 70 VDD = 5.5 V VDD = 3.6 V VDD = 2.0 V −40 −25 0 25 Ta [°C] 50 75 85 Seiko Instruments Inc. 35 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 (5) Soft-start time (tSS) vs. Temperature (Ta) 10 9 8 7 6 5 4 3 VDD = 5.5 V VDD = 3.6 V VDD = 2.0 V −40 −25 0 25 Ta [°C] 50 75 85 (6) PWM / PFM switching duty ratio (PFMDuty) vs. Temperature (Ta) 36 34 32 30 28 VDD = 5.5 V 26 VDD = 3.6 V 24 VDD = 2.0 V 22 20 −40 −25 0 25 50 75 85 Ta [°C] PFMDuty [%] (7) High level input voltage (VSH) vs. Temperature (Ta) 0.8 tSS [ms] (8) Low level input voltage (VSL) vs. Temperature (Ta) 0.8 0.7 VSH [V] 0.5 0.4 0.3 −40 −25 0 25 Ta [°C] 50 75 85 VSL [V] 0.6 VDD = 5.5 V VDD = 3.6 V VDD = 2.0 V 0.7 0.6 0.5 0.4 0.3 VDD = 5.5 V VDD = 3.6 V VDD = 2.0 V −40 −25 0 25 Ta [°C] 50 75 85 (9) UVLO release voltage (VUVLO+) vs. Temperature (Ta) 1.80 1.75 1.70 1.65 1.60 1.55 1.50 1.45 1.40 −40 −25 0 25 50 75 85 Ta [°C] VUVLO+ [V] (10) UVLO hysteresis width (VUVLOHYS) vs. Temperature (Ta) 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 −40 −25 0 25 50 75 85 Ta [°C] VUVLOHYS [V] (11) FB voltage (VFB) vs. Temperature (Ta) 0.62 0.61 VFB [V] tPRO [ms] VDD = 5.5 V VDD = 3.6 V VDD = 2.0 V (12) Short-circuit protection delay time (tPRO) vs. Temperature (Ta) CSP = 0.1 µF 80 70 60 50 40 VDD = 5.5 V VDD = 3.6 V VDD = 2.0 V 0.60 0.59 0.58 −40 −25 0 25 Ta [°C] 50 75 85 30 −40 −25 0 25 Ta [°C] 50 75 85 36 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series (13) EXT pin output current “H” (IEXTH) vs. Temperature (Ta) −350 VDD = 5.5 V −300 VDD = 3.6 V −250 VDD = 2.0 V −200 −150 −100 −50 0 −40 −25 0 25 50 75 85 Ta [°C] IEXTH [mA] (14) EXT pin output current “L” (IEXTL) vs. Temperature (Ta) 350 300 250 200 150 100 50 0 IEXTL [mA] VDD = 5.5 V VDD = 3.6 V VDD = 2.0 V −40 −25 0 25 Ta [°C] 50 75 85 (15) Operating start voltage (VST1) vs. Temperature (Ta) fOSC = 1.2 MHz 1.0 S-8365 Series 0.8 VST1 [V] fOSC = 600 kHz 1.0 0.8 VST1 [V] S-8365 Series 0.6 0.4 0.2 0.0 −40 −25 0 25 Ta [°C] 50 75 85 S-8366 Series 0.6 0.4 0.2 0.0 −40 −25 0 25 Ta [°C] 50 75 85 S-8366 Series (16) Oscillation start voltage (VST2) vs. Temperature (Ta) fOSC = 1.2 MHz 1.4 1.2 1.0 S-8365 Series 0.8 0.6 0.4 S-8366 Series 0.2 0.0 −40 −25 0 25 50 75 85 Ta [°C] VST2 [V] fOSC = 600 kHz 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 VST2 [V] S-8365 Series S-8366 Series −40 −25 0 25 Ta [°C] 50 75 85 (17) Operation holding voltage (VHLD) vs. Temperature (Ta) fOSC = 1.2 MHz 1.4 1.2 1.0 S-8365 Series 0.8 S-8366 Series 0.6 0.4 0.2 0.0 −40 −25 0 25 50 75 85 Ta [°C] VHLD [V] fOSC = 600 kHz 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 VHLD [V] S-8365 Series S-8366 Series −40 −25 0 25 Ta [°C] 50 75 85 Seiko Instruments Inc. 37 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 3. Examples of Transient Response Characteristics Unless otherwise specified, the used parts are those in Table 10 External Parts List. 3.1 At power-on (VOUT(S) = 5.0 V, VIN = 0 V → 3.3 V, PWM control, Ta = 25°C) S-8365AABBA (2) fOSC = 1.2 MHz, IOUT = 600 mA 6.0 VIN, VOUT [V] 5.0 4.0 3.0 2.0 1.0 0.0 0 5 10 t [ms] 15 20 (1) fOSC = 1.2 MHz, IOUT = 1 mA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 VIN, VOUT [V] VOUT VIN IL 0 5 10 t [ms] 15 20 6.0 5.0 4.0 3.0 2.0 1.0 0.0 S-8365AABBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 IL [A] IL [A] IL [A] VOUT VIN IL (3) fOSC = 600 kHz, IOUT = 1 mA S-8365ABBBA IL [A] 6.0 5.0 4.0 3.0 2.0 1.0 0.0 VIN, VOUT [V] VIN, VOUT [V] VOUT VIN IL 0 5 10 t [ms] 15 20 6.0 5.0 4.0 3.0 2.0 1.0 0.0 (4) fOSC = 600 kHz, IOUT = 600 mA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 5 10 t [ms] S-8365ABBBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15 20 VOUT VIN IL 3.2 At power-on (VOUT(S) = 5.0 V, VIN = 0 V → 3.3 V, PWM / PFM switching control, Ta = 25°C)) S-8366AABBA (2) fOSC = 1.2 MHz, IOUT = 600 mA 6.0 5.0 (1) fOSC = 1.2 MHz, IOUT = 1 mA IL [A] 6.0 5.0 4.0 3.0 2.0 1.0 0.0 VIN, VOUT [V] VIN, VOUT [V] VOUT VIN IL 0 5 10 t [ms] 15 20 6.0 5.0 4.0 3.0 2.0 1.0 0.0 S-8366AABBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15 20 4.0 3.0 2.0 1.0 0.0 0 5 VOUT VIN IL IL [A] 10 t [ms] (3) fOSC = 600 kHz, IOUT = 1 mA 6.0 5.0 VIN, VOUT [V] S-8366ABBBA 6.0 5.0 4.0 IL [A] (4) fOSC = 600 kHz, IOUT = 600 mA 6.0 VIN, VOUT [V] 5.0 4.0 3.0 2.0 1.0 0.0 0 5 10 t [ms] S-8366ABBBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15 20 4.0 3.0 2.0 1.0 0.0 0 5 VOUT VIN IL 10 t [ms] 15 20 VOUT VIN IL 3.0 2.0 1.0 0.0 38 Seiko Instruments Inc. IL [A] Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 3.3 Shutdown pin response (VOUT = 5.0 V, VIN = 3.3 V, VON/OFF = 0 V → 3.3 V, PWM control, Ta = 25°C) S-8365AABBA 6.0 5.0 4.0 IL [A] (1) fOSC = 1.2 MHz, IOUT = 1 mA 6.0 VON/OFF, VOUT [V] (2) fOSC = 1.2 MHz, IOUT = 600 mA 6.0 VON/OFF, VOUT [V] S-8365AABBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15 20 IL [A] IL [A] IL [A] 5.0 4.0 3.0 2.0 1.0 0.0 0 5 VOUT VON/OFF 5.0 4.0 3.0 2.0 1.0 0.0 0 5 VOUT VON/OFF IL 10 t [ms] 3.0 2.0 1.0 0.0 IL 10 t [ms] 15 20 (3) fOSC = 600 kHz, IOUT = 1 mA 6.0 VON/OFF, VOUT [V] S-8365ABBBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15 20 IL [A] (4) fOSC = 600 kHz, IOUT = 600 mA S-8365ABBBA VON/OFF, VOUT [V] 5.0 4.0 3.0 2.0 1.0 0.0 0 5 VOUT VON/OFF IL 10 t [ms] 6.0 5.0 4.0 3.0 2.0 1.0 0.0 VOUT VON/OFF IL 0 5 10 t [ms] 15 20 6.0 5.0 4.0 3.0 2.0 1.0 0.0 3.4 Shutdown pin response (VOUT = 5.0 V, VIN = 3.3 V, VON/OFF = 0 V → 3.3 V, PWM / PFM switching control, Ta = 25°C) S-8366AABBA 6.0 5.0 4.0 3.0 2.0 IL 0 5 10 t [ms] 15 20 1.0 0.0 IL [A] (1) fOSC = 1.2 MHz, IOUT = 1 mA 6.0 VON/OFF, VOUT [V] (2) fOSC = 1.2 MHz, IOUT = 600 mA 6.0 VON/OFF, VOUT [V] S-8366AABBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15 20 5.0 4.0 3.0 2.0 1.0 0.0 VOUT VON/OFF 5.0 4.0 3.0 2.0 1.0 0.0 0 5 VOUT VON/OFF IL 10 t [ms] (3) fOSC = 600 kHz, IOUT = 1 mA 6.0 VON/OFF, VOUT [V] S-8366ABBBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15 20 IL [A] (4) fOSC = 600 kHz, IOUT = 600 mA 6.0 VON/OFF, VOUT [V] S-8366ABBBA 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15 20 5.0 4.0 3.0 2.0 1.0 0.0 0 5 VOUT VON/OFF IL 10 t [ms] 5.0 4.0 3.0 2.0 1.0 0.0 0 5 VOUT VON/OFF IL 10 t [ms] Seiko Instruments Inc. 39 IL [A] S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 3.5 Power supply voltage fluctuations (VOUT = 5.0 V, IOUT = 1 mA, PWM control, Ta = 25°C) S-8365AABBA 12 10 8 6 4 2 0 0 2 4 t [ms] 6 8 10 (1) fOSC = 1.2 MHz, VIN = 2.8 V → 3.8 V 5.05 5.00 VOUT [V] (2) fOSC = 1.2 MHz, VIN = 3.8 V → 2.8 V S-8365AABBA VOUT [V] 4.90 4.85 4.80 4.75 VIN VIN 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 t [ms] (3) fOSC = 600 kHz, VIN = 2.8 V → 3.8 V S-8365ABBBA 5.15 5.10 5.05 5.00 4.95 4.90 4.85 VOUT [V] VOUT [V] VIN [V] VIN VIN 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 t [ms] 0 2 4 t [ms] 6 8 10 3.6 Power supply voltage fluctuations (VOUT = 5.0 V, IOUT = 1 mA, PWM / PFM switching control, Ta = 25°C) S-8366AABBA 12 10 VOUT [V] VIN [V] (1) fOSC = 1.2 MHz, VIN = 2.8 V → 3.8 V 5.15 5.10 VOUT [V] (2) fOSC = 1.2 MHz, VIN = 3.8 V → 2.8 V 5.15 5.10 5.05 5.00 4.95 4.90 4.85 0.0 0.4 0.8 1.2 t [ms] VOUT VIN S-8366AABBA 12 10 6 4 2 0 1.6 2.0 VIN [V] 5.05 5.00 4.95 4.90 4.85 0 2 4 VOUT VIN 8 6 4 2 0 6 8 10 8 t [ms] (3) fOSC = 600 kHz, VIN = 2.8 V → 3.8 V 5.15 5.10 VOUT [V] S-8366ABBBA 12 10 8 6 4 2 0 (4) fOSC = 600 kHz, VIN = 3.8 V → 2.8 V S-8366ABBBA VOUT [V] 5.00 4.95 4.90 4.85 0 2 4 t [ms] 6 8 10 VIN VIN 0.0 0.4 0.8 1.2 t [ms] 1.6 2.0 40 Seiko Instruments Inc. VIN [V] VIN [V] 5.05 VOUT 5.15 5.10 5.05 5.00 4.95 4.90 4.85 VOUT 12 10 8 6 4 2 0 VIN [V] VOUT 12 10 8 6 4 2 0 (4) fOSC = 600 kHz, VIN = 3.8 V → 2.8 V S-8365ABBBA 5.15 5.10 5.05 5.00 4.95 4.90 4.85 VOUT 12 10 8 6 4 2 0 VIN [V] VIN [V] 4.95 VOUT 5.05 5.00 4.95 4.90 4.85 4.80 4.75 VOUT 12 10 8 6 4 2 0 Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 3.7 Power supply voltage fluctuations (VOUT = 5.0 V, IOUT = 500 mA, PWM control, Ta = 25°C) (2) fOSC = 1.2 MHz, VIN = 3.8 V → 2.8 V S-8365AABBA (1) fOSC = 1.2 MHz, VIN = 2.8 V → 3.8 V S-8365AABBA 16 5.60 5.40 14 5.20 12 VOUT 5.00 10 4.80 8 4.60 6 VIN 4.40 4 4.20 2 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] (3) fOSC = 600 kHz, VIN = 2.8 V → 3.8 V S-8365ABBBA 5.60 5.40 5.20 5.00 4.80 4.60 4.40 4.20 4.00 VOUT [V] VOUT [V] VIN 0.0 0.2 0.4 0.6 t [ms] 0.8 1.0 5.60 5.40 5.20 5.00 4.80 4.60 4.40 4.20 4.00 VOUT [V] VOUT [V] VIN [V] VIN 0.0 0.2 0.4 0.6 t [ms] 0.8 1.0 3.8 Power supply voltage fluctuations (VOUT = 5.0 V, IOUT = 500 mA, PWM / PFM switching control, Ta = 25°C) (2) fOSC = 1.2 MHz, VIN = 3.8 V → 2.8 V S-8366AABBA 16 5.60 5.40 14 5.20 12 VOUT 5.00 10 4.80 8 4.60 6 4.40 4 VIN 4.20 2 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] VOUT [V] (1) fOSC = 1.2 MHz, VIN = 2.8 V → 3.8 V S-8366AABBA 16 5.60 5.40 14 5.20 12 VOUT 5.00 10 4.80 8 4.60 6 VIN 4.40 4 4.20 2 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] (3) fOSC = 600 kHz, VIN = 2.8 V → 3.8 V S-8366ABBBA 16 5.60 5.40 14 5.20 12 VOUT 5.00 10 4.80 8 4.60 6 VIN 4.40 4 4.20 2 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] VOUT [V] VIN [V] (4) fOSC = 600 kHz, VIN = 3.8 V → 2.8 V S-8366ABBBA 16 5.60 5.40 14 5.20 12 5.00 10 4.80 8 4.60 6 4.40 4 4.20 2 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] VOUT [V] VOUT [V] VIN [V] Seiko Instruments Inc. 41 VIN [V] VIN [V] VIN [V] VOUT 16 14 12 10 8 6 4 2 0 (4) fOSC = 600 kHz, VIN = 3.8 V → 2.8 V S-8365ABBBA 16 5.60 5.40 14 5.20 12 VOUT 5.00 10 4.80 8 4.60 6 4.40 4 VIN 4.20 2 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] VIN [V] VIN [V] VOUT 16 14 12 10 8 6 4 2 0 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 3.9 Load fluctuations (VOUT = 5.0 V, VIN = 3.3 V, IOUT = 0.1 mA → 100 mA → 0.1 mA, PWM control, Ta = 25°C) (2) fOSC = 1.2 MHz, IOUT = 100 mA → 0.1 mA S-8365AABBA VOUT 4.90 4.80 4.70 4.60 IOUT 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 t [ms] 600 400 200 0 IOUT 0 5 10 15 20 25 t [ms] 30 35 40 (3) fOSC = 600 kHz, IOUT = 0.1 mA → 100 mA S-8365ABBBA 1600 5.40 5.30 1400 5.20 1200 5.10 1000 VOUT 5.00 800 4.90 600 4.80 400 IOUT 4.70 200 0 4.60 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 t [ms] 3.10 (4) fOSC = 600 kHz, IOUT = 100 mA → 0.1 mA S-8365ABBBA 5.40 5.30 5.20 5.10 5.00 4.90 4.80 4.70 4.60 VOUT IOUT 0 5 10 15 20 25 t [ms] 30 35 40 1600 1400 1200 1000 800 600 400 200 0 Load fluctuations (VOUT = 5.0 V, VIN = 3.3 V, IOUT = 0.1 mA → 100 mA → 0.1 mA, PWM / PFM switching control, Ta = 25°C) (2) fOSC = 1.2 MHz, IOUT = 100 mA → 0.1 mA S-8366AABBA (1) fOSC = 1.2 MHz, IOUT = 0.1 mA → 100 mA S-8366AABBA 5.40 5.30 5.20 5.10 5.00 4.90 4.80 4.70 4.60 VOUT IOUT 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 t [ms] 1600 1400 1200 1000 800 600 400 200 0 5.40 5.30 5.20 5.10 5.00 4.90 4.80 4.70 4.60 IOUT [mA] IOUT 0 5 10 15 20 25 t [ms] 30 35 40 (3) fOSC = 600 kHz, IOUT = 0.1 mA → 100 mA S-8366ABBBA 1600 5.40 5.30 1400 5.20 1200 5.10 1000 VOUT 5.00 800 4.90 600 4.80 400 IOUT 4.70 200 0 4.60 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 t [ms] (4) fOSC = 600 kHz, IOUT = 100 mA → 0.1 mA S-8366ABBBA 1600 5.40 5.30 1400 5.20 1200 5.10 1000 VOUT 5.00 800 4.90 600 4.80 400 4.70 200 IOUT 0 4.60 0 5 10 15 20 25 30 35 40 t [ms] VOUT [V] IOUT [mA] 42 Seiko Instruments Inc. IOUT [mA] VOUT [V] IOUT [mA] VOUT [V] VOUT [V] VOUT 1600 1400 1200 1000 800 600 400 200 0 IOUT [mA] IOUT [mA] VOUT [V] VOUT [V] IOUT [mA] IOUT [mA] VOUT [V] VOUT [V] (1) fOSC = 1.2 MHz, IOUT = 0.1 mA → 100 mA S-8365AABBA 1600 5.40 5.30 1400 5.20 1200 5.10 1000 VOUT 5.00 800 5.40 5.30 5.20 5.10 5.00 4.90 4.80 4.70 4.60 1600 1400 1200 1000 800 600 400 200 0 Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 3.11 Load fluctuations (VOUT = 5.0 V, VIN = 3.3 V, IOUT = 0.1 mA → 300 mA → 0.1 mA, PWM control, Ta = 25°C) (2) fOSC = 1.2 MHz, IOUT = 300 mA → 0.1 mA S-8365AABBA 1600 5.60 5.40 1400 5.20 1200 5.00 1000 VOUT 4.80 800 4.60 600 4.40 400 4.20 200 IOUT 0 4.00 0 5 10 15 20 25 30 35 40 t [ms] (4) fOSC = 600 kHz, IOUT = 300 mA → 0.1 mA S-8365ABBBA 1600 5.60 5.40 1400 5.20 1200 5.00 1000 VOUT 4.80 800 4.60 600 4.40 400 4.20 200 IOUT 0 4.00 0 5 10 15 20 25 30 35 40 t [ms] VOUT [V] VOUT [V] (1) fOSC = 1.2 MHz, IOUT = 0.1 mA → 300 mA S-8365AABBA 1600 5.60 5.40 1400 5.20 1200 VOUT 5.00 1000 4.80 800 4.60 600 IOUT 4.40 400 4.20 200 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] (3) fOSC = 600 kHz, IOUT = 0.1 mA → 300 mA S-8365ABBBA 1600 5.60 5.40 1400 5.20 1200 VOUT 5.00 1000 4.80 800 4.60 600 IOUT 4.40 400 4.20 200 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] 3.12 IOUT [mA] IOUT [mA] Load fluctuations (VOUT = 5.0 V, VIN = 3.3 V, IOUT = 0.1 mA → 300 mA → 0.1 mA, PWM / PFM switching control, Ta = 25°) (2) fOSC = 1.2 MHz, IOUT = 300 mA → 0.1 mA S-8366AABBA 1600 5.60 5.40 1400 5.20 1200 5.00 1000 VOUT 4.80 800 4.60 600 4.40 400 4.20 200 IOUT 0 4.00 0 5 10 15 20 25 30 35 40 t [ms] (4) fOSC = 600 kHz, IOUT = 300 mA → 0.1 mA S-8366ABBBA 5.60 5.40 5.20 VOUT 5.00 4.80 4.60 4.40 4.20 IOUT 4.00 0 10 20 30 40 50 t [ms] VOUT [V] VOUT [V] (1) fOSC = 1.2 MHz, IOUT = 0.1 mA → 300 mA S-8366AABBA 1600 5.60 5.40 1400 5.20 1200 VOUT 5.00 1000 4.80 800 4.60 600 IOUT 4.40 400 4.20 200 0 4.00 0.0 0.2 0.4 0.6 0.8 1.0 t [ms] (3) fOSC = 600 kHz, IOUT = 0.1 mA → 300 mA S-8366ABBBA IOUT [mA] 5.60 5.40 5.20 5.00 4.80 4.60 4.40 4.20 4.00 IOUT [mA] IOUT 0.0 0.2 0.4 0.6 t [ms] 0.8 1.0 Seiko Instruments Inc. 43 IOUT [mA] VOUT [V] VOUT 1600 1400 1200 1000 800 600 400 200 0 1600 1400 1200 1000 800 600 400 200 0 IOUT [mA] VOUT [V] IOUT [mA] VOUT [V] IOUT [mA] VOUT [V] S-8365/8366 Series Reference Data STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 Reference data is provided to determine specific external components. Therefore, the following data shows the characteristics of the recommended external components selected for various applications. 1. External parts Table 20 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for External Parts (1 / 2) Oscillation Control Output L M1 SD Condition Product Name Frequency System Voltage 1 2 3 4 5 6 7 8 9 10 11 12 S-8365AABBA S-8365ABBBA S-8366AABBA S-8366ABBBA S-8365AABBA S-8365ABBBA S-8366AABBA S-8366ABBBA S-8365AABBA S-8365ABBBA S-8366AABBA S-8366ABBBA 1.2 MHz 600 kHz 1.2 MHz 600 kHz 1.2 MHz 600 kHz 1.2 MHz 600 kHz 1.2 MHz 600 kHz 1.2 MHz 600 kHz PWM PWM PWM / PFM PWM / PFM PWM PWM PWM / PFM PWM / PFM PWM PWM PWM / PFM PWM / PFM 2.5 V 2.5 V 2.5 V 2.5 V 3.3 V 3.3 V 3.3 V 3.3 V 5.0 V 5.0 V 5.0 V 5.0 V NR6028T-2R2M LTF5022T-3R3M NR6028T-2R2M LTF5022T-3R3M NR6028T-2R2M LTF5022T-3R3M NR6028T-2R2M LTF5022T-3R3M NR6028T-2R2M LTF5022T-3R3M NR6028T-2R2M LTF5022T-3R3M MCH3406 MCH3406 MCH3406 MCH3406 MCH3406 MCH3406 MCH3406 MCH3406 MCH3406 MCH3406 MCH3406 MCH3406 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 RB050LA-30 Table 20 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for External Parts (2 / 2) Condition CIN COUT RFB1 RFB2 CFB CDD 1 C2012X5R1A106KT GRM31CR71A106KA × 2 47 kΩ 15 k Ω 68 pF 0.1 µF 2 C2012X5R1A106KT GRM31CR71A106KA × 2 47 kΩ 15 k Ω 82 pF 0.1 µF 3 C2012X5R1A106KT GRM31CR71A106KA × 2 47 kΩ 15 k Ω 68 pF 0.1 µF 4 C2012X5R1A106KT GRM31CR71A106KA × 2 47 kΩ 15 k Ω 82 pF 0.1 µF 5 C2012X5R1A106KT GRM31CR71A106KA × 2 68 kΩ 15 k Ω 68 pF 0.1 µF 6 C2012X5R1A106KT GRM31CR71A106KA × 2 68 kΩ 15 k Ω 82 pF 0.1 µF 7 C2012X5R1A106KT GRM31CR71A106KA × 2 68 kΩ 15 k Ω 68 pF 0.1 µF 8 C2012X5R1A106KT GRM31CR71A106KA × 2 68 kΩ 15 k Ω 82 pF 0.1 µF 9 C2012X5R1A106KT GRM31CR71A106KA × 2 110 kΩ 15 k Ω 56 pF 0.1 µF 10 C2012X5R1A106KT GRM31CR71A106KA × 2 110 kΩ 15 k Ω 68 pF 0.1 µF 11 C2012X5R1A106KT GRM31CR71A106KA × 2 110 kΩ 15 k Ω 56 pF 0.1 µF 12 C2012X5R1A106KT GRM31CR71A106KA × 2 110 kΩ 15 k Ω 68 pF 0.1 µF 44 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series The properties of the external parts are shown below. Table 21 Part Inductor LTF5022T-3R3M Diode RB050LA-30 Part Name NR6028T-2R2M Characteristics of External Parts Manfuacturer Characteristics 2.2 µH, DCR*1 = 0.020 Ω, IMAX*2 = 4.2 A, Taiyo Yuden Co., Ltd. L × W × H = 6.0 × 6.0 × 2.8 mm 3.3 µH, DCR*1 = 0.060 Ω, IMAX*2 = 2.7 A, TDK Corporation L × W × H = 5.0 × 5.2 × 2.2 mm VF*3 = 0.45 V, IF*4 = 3.0 A, VR*5 = 30 V Rohm Co., Ltd. L × W × H = 4.7 × 2.6 × 1.05 mm VDSS*6 = 20 V, VGSS*7 = ±10 V, ID*8 = 3.0 A, QG*9 = 8.8 nC typ., Sanyo Semiconductor Co., Ltd. RDS(ON)*10 = 0.082 Ω max. (VGS*11 = 2.5 V) L × W × H = 2.1 × 2.0 × 0.85 mm 10 µF, EDC*12 = 10 V, X5R, L × W × H = 2.0 × 1.25 × 1.45 mm TDK Corporation *12 0.1 µF, EDC = 16 V, X7R, L × W × H = 1.0 × 0.5 × 0.55 mm 10 µF, EDC*12 = 10 V, X7R, Murata Manufacturing, Co., Ltd. L × W × H = 3.2 × 1.6 × 1.6 mm Transistor MCH3406 C2012X5R1A106KT Capacitor C1005X7R1C104KT GRM31CR71A106KA * 1. DCR : * 2. IMAX : * 3. V F : * 4. I F : * 5. V R : * 6. VDSS : * 7. VGSS : * 8. I D : * 9. Q G : *10. RDS(ON ): *11. VGS : *12. EDC : DC resistance Maximum allowable current Forward voltage Forward current Reverse voltage Drain-source voltage (during short-circuiting between the gate and source) Gate-source voltage (during short-circuiting between the drain and source) Drain current Gate charge On-resistance between the drain and source Gate-source voltage Rated voltage Caution The values shown in the characteristics column of Table 21 above are based on the materials provided by each manufacture. However, consider the characteristics of the original materials when using the above products. Seiko Instruments Inc. 45 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 2. Output Current (IOUT) vs. Efficiency (η) Characteristics, Output Current (IOUT) vs. Output Voltage (VOUT) Characteristics Following shows the actual output current (IOUT) vs. efficiency (η) and output current (IOUT) vs. output voltage (VOUT) characteristics for conditions 1 to 12 in Table 20. Condition 1 S-8365AABBA (VOUT(S) = 2.5 V) 100 90 80 70 60 50 40 30 20 10 0 0.1 1 η [%] VIN = 1.8 V 2.60 2.55 2.50 2.45 2.40 2.35 2.30 2.25 2.20 2.15 2.10 2.05 2.00 0.1 1 10 100 IOUT [mA] 1000 10000 VOUT [V] VIN = 1.8 V 10 100 IOUT [mA] 1000 10000 Condition 2 100 90 80 70 60 50 40 30 20 10 0 S-8365ABBBA (VOUT(S) = 2.5 V) 2.60 2.55 2.50 2.45 2.40 2.35 2.30 2.25 2.20 2.15 2.10 2.05 2.00 0.1 1 0.1 1 10 100 IOUT [mA] 1000 10000 VOUT [V] VIN = 1.8 V η [%] VIN = 1.8 V 10 100 IOUT [mA] 1000 10000 Condition 3 100 90 80 70 60 50 40 30 20 10 0 S-8366AABBA (VOUT(S) = 2.5 V) 2.60 2.55 2.50 2.45 2.40 2.35 2.30 2.25 2.20 2.15 2.10 2.05 2.00 0.1 1 0.1 1 10 100 IOUT [mA] 1000 10000 VOUT [V] VIN = 1.8 V η [%] VIN = 1.8 V 10 100 IOUT [mA] 1000 10000 Condition 4 S-8366ABBBA (VOUT(S) = 2.5 V) 100 90 80 70 60 50 40 30 20 10 0 0.1 1 10 100 IOUT [mA] 1000 10000 VOUT [V] VIN = 1.8 V 2.60 2.55 2.50 2.45 2.40 2.35 2.30 2.25 2.20 2.15 2.10 2.05 2.00 0.1 1 η [%] VIN = 1.8 V 10 100 IOUT [mA] 1000 10000 46 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Condition 5 100 90 80 70 60 50 40 30 20 10 0 S-8365AABBA (VOUT(S) = 3.3 V) 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V 0.1 1 10 100 IOUT [mA] 1000 10000 VOUT [V] η [%] VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V 10 100 IOUT [mA] 1000 10000 Condition 6 S-8365ABBBA (VOUT(S) = 3.3 V) 100 90 80 70 60 50 40 30 20 10 0 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V 10 100 IOUT [mA] 1000 10000 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 0.1 1 VOUT [V] VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V η [%] 10 100 IOUT [mA] 1000 10000 Condition 7 100 90 80 70 60 50 40 30 20 10 0 S-8366AABBA (VOUT(S) = 3.3 V) 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V 0.1 1 10 100 IOUT [mA] 1000 10000 VOUT [V] VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V η [%] 10 100 IOUT [mA] 1000 10000 Condition 8 100 90 80 70 60 50 40 30 20 10 0 S-8366ABBBA (VOUT(S) = 3.3 V) 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V 0.1 1 10 100 IOUT [mA] 1000 10000 VOUT [V] η [%] VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V 10 100 IOUT [mA] 1000 10000 Seiko Instruments Inc. 47 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 Condition 9 100 90 80 70 60 50 40 30 20 10 0 S-8365AABBA (VOUT(S) = 5.0 V) 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V 0.1 1 10 100 IOUT [mA] 1000 10000 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V VOUT [V] η [%] 10 100 IOUT [mA] 1000 10000 Condition 10 S-8365ABBBA (VOUT(S) = 5.0 V) 100 90 80 70 60 50 40 30 20 10 0 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V 10 100 IOUT [mA] 1000 10000 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V VOUT [V] η [%] 10 100 IOUT [mA] 1000 10000 Condition 11 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8366AABBA (VOUT(S) = 5.0 V) 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V 1 10 100 IOUT [mA] 1000 10000 VOUT [V] η [%] 10 100 IOUT [mA] 1000 10000 Condition 12 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8366ABBBA (VOUT(S) = 5.0 V) 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 4.4 4.3 4.2 0.1 1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V 1 10 100 IOUT [mA] 1000 10000 VOUT [V] η [%] 10 100 IOUT [mA] 1000 10000 48 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series 3. Output Current (IOUT) vs. Ripple Voltage (Vr) Characteristics Following shows the actual output current (IOUT) vs. ripple voltage (Vr) characteristics for conditions of 1 to 12 in Table 20. Condition 1 100 90 80 70 60 50 40 30 20 10 0 0.1 1 S-8365AABBA (VOUT(S) = 2.5 V) Condition 2 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8365ABBBA (VOUT(S) = 2.5 V) Vr [V] Vr [V] VIN = 1.8 V VIN = 1.8 V 10 100 IOUT [mA] 1000 10000 1 10 100 IOUT [mA] 1000 10000 Condition 3 S-8366AABBA (VOUT(S) = 2.5 V) Condition 4 S-8366ABBBA (VOUT(S) = 2.5 V) 100 90 80 70 60 50 40 30 20 10 0 0.1 1 VIN = 1.8 V 100 90 80 70 60 50 40 30 20 10 0 0.1 1 Vr [V] Vr [V] VIN = 1.8 V 10 100 IOUT [mA] 1000 10000 10 100 IOUT [mA] 1000 10000 Condition 5 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8365AABBA (VOUT(S) = 3.3 V) Condition 6 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8365ABBBA (VOUT(S) = 3.3 V) VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V Vr [V] 1 10 100 IOUT [mA] 1000 10000 Vr [V] 1 10 100 IOUT [mA] 1000 10000 Condition 7 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8366AABBA (VOUT(S) = 3.3 V) Condition 8 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8366ABBBA (VOUT(S) = 3.3 V) VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V Vr [V] 1 10 100 IOUT [mA] 1000 10000 Vr [V] 1 10 100 IOUT [mA] 1000 10000 Seiko Instruments Inc. 49 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 Condition 9 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8365AABBA (VOUT(S) = 5.0 V) Condition 10 100 90 80 70 60 50 40 30 20 10 0 0.1 S-8365ABBBA (VOUT(S) = 5.0 V) VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V Vr [V] 1 10 100 IOUT [mA] 1000 10000 Vr [V] 1 10 100 IOUT [mA] 1000 10000 Condition 11 S-8366AABBA (VOUT(S) = 5.0 V) Condition 12 S-8366ABBBA (VOUT(S) = 5.0 V) 100 90 80 70 60 50 40 30 20 10 0 0.1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V 100 90 80 70 60 50 40 30 20 10 0 0.1 VIN = 1.8 V VIN = 2.4 V VIN = 3.0 V VIN = 4.2 V Vr [V] 1 10 100 IOUT [mA] 1000 10000 Vr [V] 1 10 100 IOUT [mA] 1000 10000 50 Seiko Instruments Inc. Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Marking Specification (1) SNT-6A SNT-6A Top view 1 6 (1) to (3) : (4) to (6) : Product code (Refer to Product name vs. Product code) Lot number (4) (5) (6) (1) (2) (3) 2 3 5 4 Product name vs. Product code (a) S-8365 Series Product name S-8365AAAAA-I6T1G2 S-8365AAABA-I6T1G2 S-8365AABBA-I6T1G2 S-8365ABAAA-I6T1G2 S-8365ABABA-I6T1G2 S-8365ABBBA-I6T1G2 Product code (1) (2) (3) U Q A U Q C U Q G U Q I U Q K U Q O (b) S-8366 Series Product name S-8366AAAAA-I6T1G2 S-8366AAABA-I6T1G2 S-8366AABBA-I6T1G2 S-8366ABAAA-I6T1G2 S-8366ABABA-I6T1G2 S-8366ABBBA-I6T1G2 (1) U U U U U U Product code (2) (3) Q R Q T Q X Q Z Q 3 Q 7 (2) SOT-23-5 SOT-23-5 Top view 5 4 (1) to (3) : (4) : Product code (Refer to Product name vs. Product code) Lot number (1) (2) (3) (4) 1 2 3 Product name vs. Product code (a) S-8365 Series Product name S-8365AAAAA-M5T1S2 S-8365AAABA-M5T1S2 S-8365ABAAA-M5T1S2 S-8365ABABA-M5T1S2 Product code (1) (2) (3) U Q A U Q C U Q I U Q K (b) S-8366 Series Product name S-8366AAAAA-M5T1S2 S-8366AAABA-M5T1S2 S-8366ABAAA-M5T1S2 S-8366ABABA-M5T1S2 (1) U U U U Product code (2) (3) Q R Q T Q Z Q 3 Seiko Instruments Inc. 51 S-8365/8366 Series STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER Rev.1.1_00 (3) SOT-23-6 SOT-23-6 Top view 6 5 4 (1) to (3) : (4) : Product code (Refer to Product name vs. Product code) Lot number (1) (2) (3) (4) 1 2 3 Product name vs. Product code (a) S-8365 Series Product name S-8365AABBA-M6T1S2 S-8365ABBBA-M6T1S2 Product code (1) (2) (3) U Q G U Q O (b) S-8366 Series Product name S-8366AABBA-M6T1S2 S-8366ABBBA-M6T1S2 (1) U U Product code (2) (3) Q X Q 7 52 Seiko Instruments Inc. 1.57±0.03 6 5 4 1 2 3 +0.05 0.08 -0.02 0.48±0.02 0.5 0.2±0.05 No. PG006-A-P-SD-2.0 TITLE No. SCALE UNIT SNT-6A-A-PKG Dimensions PG006-A-P-SD-2.0 mm Seiko Instruments Inc. ø1.5 -0 +0.1 2.0±0.05 4.0±0.1 0.25±0.05 1.85±0.05 5° ø0.5 -0 +0.1 4.0±0.1 0.65±0.05 321 4 56 Feed direction No. PG006-A-C-SD-1.0 TITLE No. SCALE UNIT SNT-6A-A-Carrier Tape PG006-A-C-SD-1.0 mm Seiko Instruments Inc. 12.5max. Enlarged drawing in the central part ø13±0.2 9.0±0.3 (60°) (60°) No. PG006-A-R-SD-1.0 TITLE No. SCALE UNIT mm SNT-6A-A-Reel PG006-A-R-SD-1.0 QTY. 5,000 Seiko Instruments Inc. 0.52 1.36 0.52 0.3 0.2 0.3 0.2 0.3 Caution Making the wire pattern under the package is possible. However, note that the package may be upraised due to the thickness made by the silk screen printing and of a solder resist on the pattern because this package does not have the standoff. No. PG006-A-L-SD-3.0 TITLE No. SCALE UNIT SNT-6A-A-Land Recommendation PG006-A-L-SD-3.0 mm Seiko Instruments Inc. 2.9±0.2 1.9±0.2 5 4 1 2 3 0.16 -0.06 +0.1 0.95±0.1 0.4±0.1 No. MP005-A-P-SD-1.2 TITLE No. SCALE UNIT SOT235-A-PKG Dimensions MP005-A-P-SD-1.2 mm Seiko Instruments Inc. 4.0±0.1(10 pitches:40.0±0.2) +0.1 ø1.5 -0 2.0±0.05 0.25±0.1 ø1.0 -0 +0.2 4.0±0.1 1.4±0.2 3.2±0.2 321 4 5 Feed direction No. MP005-A-C-SD-2.1 TITLE No. SCALE UNIT SOT235-A-Carrier Tape MP005-A-C-SD-2.1 mm Seiko Instruments Inc. 12.5max. Enlarged drawing in the central part ø13±0.2 9.0±0.3 (60°) (60°) No. MP005-A-R-SD-1.1 TITLE No. SCALE UNIT mm SOT235-A-Reel MP005-A-R-SD-1.1 QTY. 3,000 Seiko Instruments Inc. 2.9±0.2 1.9±0.2 6 5 4 0.95 1 2 3 0.95 0.15 -0.05 +0.1 0.35±0.15 No. MP006-A-P-SD-1.1 TITLE No. SCALE UNIT SOT236-A-PKG Dimensions MP006-A-P-SD-1.1 mm Seiko Instruments Inc. 4.0±0.1(10 pitches:40.0±0.2) +0.1 ø1.5 -0 2.0±0.05 0.25±0.1 ø1.0 -0 +0.2 4.0±0.1 1.4±0.2 3.2±0.2 321 456 Feed direction No. MP006-A-C-SD-3.1 TITLE No. SCALE UNIT SOT236-A-Carrier Tape MP006-A-C-SD-3.1 mm Seiko Instruments Inc. 12.5max. Enlarged drawing in the central part ø13±0.2 9.0±0.3 (60°) (60°) No. MP006-A-R-SD-2.1 TITLE No. SCALE UNIT mm SOT236-A-Reel MP006-A-R-SD-2.1 QTY 3,000 Seiko Instruments Inc. • • • • • • The information described herein is subject to change without notice. Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein whose related industrial properties, patents, or other rights belong to third parties. The application circuit examples explain typical applications of the products, and do not guarantee the success of any specific mass-production design. When the products described herein are regulated products subject to the Wassenaar Arrangement or other agreements, they may not be exported without authorization from the appropriate governmental authority. Use of the information described herein for other purposes and/or reproduction or copying without the express permission of Seiko Instruments Inc. is strictly prohibited. The products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc. Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may occur. The user of these products should therefore give thorough consideration to safety design, including redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.