XC9141B44CER-G

XC9141/XC9142 Series ETR04018-003d Load Disconnection Function, 0.8A Step-up DC/DC Converters ☆Green Operation compatible ■GENERAL DESCRIPTION XC9141/XC9142 series are synchronous step-up DC/DC converters with a 0.3Ω N-channel driver transistor and a 0.3Ω synchronous P-channel switching transistor built-in. A highly efficient and stable current can be supplied up to 0.8A by reducing ON resistance of the built-in transistors. The series are able to start operation under the condition which has 0.9V input voltage to generate 3.3V output voltage with a 100Ω load resistor, suitable for mobile equipment using only one Alkaline battery or one Nickel metal hydride battery. The output voltage can be set from 1.8V to 5.5V (±2.0%) in steps of 0.1V. With the built-in oscillator, either 1.2MHz or 3.0MHz can be selected for suiting to your particular application. During the devices enter stand-by mode, A, D types prevent the application malfunction by C L Discharge Function which can quickly discharge the electric charge at the output capacitor (CL). B, E types is able to drive RTC etc. by Bypass Switch Function to maintain continuity between the input and output. C, F types is able to connect in output voltage OR circuit with other power supplies by Load Disconnection Function which breaks continuity between the input and output. ■APPLICATIONS ■FEATURES ●Portable equipment Input Voltage Range Fixed Output Voltage Oscillation Frequency Input Current Output Current ●Beauty & health equipment ●Wearable devices ●Game & Hobby ●PC Peripherals ●Devices with 1~3 Alkaline, Control Mode Selection 1~3 Nickel Hydride, 1 Lithium and 1 Li-ion Load Transient Response Protection Circuits Functions Output Capacitor Operating Ambient Temperature Package Environmentally Friendly L=4.7μH Lx CE VOUT VOUT CL=10μF CE VB AT BAT CIN =10μF ■TYPICAL PERFORMANCE CHARACTERISTICS GND :XC9141A33C / XC9142A33C L=4.7μH(LQH5BPN4R7NT0L) : CIN=10μF(GRM188R60J106M),CL=10μF(GRM188R60J106M) : 100 : 90 : 80 : 70 : 60 V BAT =0.9V : V BAT =1.2V 50 : V BAT =1.8V 40 V BAT =2.5V : Efficiency : EFFI [%] ■TYPICAL APPLICATION CIRCUIT : 0.65V ~ 6.0V : 1.8V ~ 5.5V (0.1V increments) : 1.2MHz, 3.0MHz : 0.8A : 500mA @VOUT=5.0V, VBAT=3.3V 330mA @VOUT=3.3V, VBAT =1.8V : PWM (XC9141) PWM/PFM (XC9142) : 100mV@VOUT=3.3V, VBAT =1.8V, IOUT=1mA→200mA (tr=5μs) : Over-current limit Integral latch method (D,E,F type) Output short-circuit protection (D,E,F type) : Soft-start Load Disconnection (A,C,D,F type) CL Auto Discharge (A,D type) Bypass Switch (B,E type) : Ceramic Capacitor : -40℃ ~ 85℃ : SOT-25, USP-6C, WLP-6-01 : EU RoHS Compliant, Pb Free 30 20 solid line : XC9141 dotted line : XC9142 10 0 0.1 1 10 100 Output Current : IOUT [mA] 1000 1/32 XC9141/XC9142 Series ■BLOCK DIAGRAM ●A type Lx CFB Load disconnect Controller Phase Compensation RFB1 FB PWM/PFM Controller Logic RFB2 Vref with Soft Start VOUT PWM comparator Error Amp. RAMP Wave Generator CL Discharge Buffer Driver GND OSC CE Controller Logic CE VOUT Current sense VDD VOUT BAT VDD MAX * Diodes inside the circuits are ESD protection diodes and parasitic diodes. * XC9141 series chooses only PWM control. ●B type Lx CFB Load disconnect Controller Phase Compensation RFB1 VOUT PWM comparator Error Amp. FB PWM/PFM Controller Logic RFB2 Vref with Soft Start RAMP Wave Generator Buffer Driver GND OSC CE Controller Logic CE VOUT Current sense Bypass SW VOUT VDD VDD MAX BAT * Diodes inside the circuits are ESD protection diodes and parasitic diodes. * XC9141 series chooses only PWM control. ●C type Lx CFB Load disconnect Controller Phase Compensation RFB1 Error Amp. FB Current sense CE VOUT PWM comparator PWM/PFM Controller Logic RFB2 Vref with Soft Start VOUT RAMP Wave Generator Buffer Driver GND OSC CE Controller Logic VDD VOUT VDD MAX * Diodes inside the circuits are ESD protection diodes and parasitic diodes. 2/32 BAT XC9141/XC9142 Series ■BLOCK DIAGRAM (Continued) ●D type Lx CFB Phase Compensation RFB1 PWM comparator Error Amp. FB PWM/PFM Controller Logic RFB2 Vref with Soft Start RAMP Wave Generator Load disconnect Controller Current sense Short-circuit protection Latch Timer VOUT CL Discharge Buffer Driver GND OSC CE Controller Logic CE VOUT VDD VOUT BAT VDD MAX * Diodes inside the circuits are ESD protection diodes and parasitic diodes. * XC9141 series chooses only PWM control. ●E type Lx CFB Phase Compensation RFB1 PWM comparator Error Amp. FB PWM/PFM Controller Logic RFB2 Vref with Soft Start RAMP Wave Generator Load disconnect Controller Current sense Short-circuit protect ion Latch Timer VOUT Buffer Driver GND OSC CE Controller Logic CE VOUT Bypass SW VOUT VDD VDD MAX BAT * Diodes inside the circuits are ESD protection diodes and parasitic diodes. * XC9141 series chooses only PWM control. ●F type Lx CFB Phase Compensation RFB1 Error Amp. FB PWM comparator PWM/PFM Controller Logic RFB2 Vref with Soft Start CE RAMP Wave Generator Load disconnect Controller Current sense Short-circuit protect ion Latch Timer VOUT VOUT Buffer Driver GND OSC CE Controller Logic VDD VOUT VDD MAX BAT * Diodes inside the circuits are ESD protection diodes and parasitic diodes 3/32 XC9141/XC9142 Series ■PRODUCT CLASSIFICATION ●Ordering Information XC9141①②③④⑤⑥-⑦ PWM control DESIGNATOR ITEM SYMBOL DESCRIPTION A ① B Type D Refer to Selection Guide E Output Voltage (A,B Type) Output Voltage (D,E Type) ②③ ④ 22 ~ 55 Oscillation Frequency ⑤⑥-⑦(*1) (*1) 18 ~ 55 Package (Order Unit) Output voltage options e.g. 1.8V → ②=1, ③=8 Output voltage options e.g. 2.5V → ②=2, ③=5 C 1.2MHz D 3.0MHz MR-G SOT-25 (3,000pcs/Reel) ER-G USP-6C (3,000pcs/Reel) 0R-G WLP-6-01(5,000pcs/Reel) The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant. ●Selection guides TYPE Purpose CL Discharge Load Disconnection Yes A D B E 4/32 Bypass Mode at CE=”L” - Current Limit Yes (without latch) Yes (with integral latch) Yes (without latch) Yes (with integral latch) Short Protection Yes Yes Stand-by Options at CE=”L” Complete Output Disconnect Input-to-Output Bypass XC9141/XC9142 Series ■PRODUCT CLASSIFICATION (Continued) XC9142①②③④⑤⑥-⑦ PWM/PFM automatic switching control DESIGNATOR ITEM SYMBOL DESCRIPTION A B ① C Type D Refer to Selection Guide E F Output Voltage (A,B,C Type) Output Voltage (D,E,F Type) ②③ (*1) ④ Oscillation Frequency ⑤⑥-⑦(*1) Package (Order Unit) 18 ~ 55 22 ~ 55 Output voltage options e.g. 1.8V → ②=1, ③=8 Output voltage options e.g. 2.5V → ②=2, ③=5 C 1.2MHz D 3.0MHz MR-G SOT-25 (3,000pcs/Reel) ER-G USP-6C (3,000pcs/Reel) 0R-G WLP-6-01(5,000pcs/Reel) The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant. ●Selection guides TYPE Purpose CL Discharge Load Disconnection Yes A D B E C F Bypass Mode at CE=”L” - VOUT OR Connection - Current Limit Yes (without latch) Yes (with integral latch) Yes (without latch) Yes (with integral latch) Yes (without latch) Yes (with integral latch) Short Protection Yes Yes Yes Stand-by Options at CE=”L” Complete Output Disconnect Input-to-Output Bypass Complete Output Disconnect 5/32 XC9141/XC9142 Series ■PIN CONFIGURATION Lx VOUT 5 4 1 CE 2 3 GND BAT VOUT 6 1 BAT GND 4 Lx 5 2 GND Lx 5 2 GND VOUT 6 1 BAT 3 CE GND 4 WLP-6-01 （BOTTOM VIEW） USP-6C （BOTTOM VIEW） SOT-25 （TOP VIEW） 3 CE *The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected to the GND (No.2, 4) pin. ■PIN ASSIGNMENT SOT-25 PIN NUMBER USP-6C WLP-6-01 1 2 3 4 5 - 3 2 1 6 5 4 3 2 1 6 5 4 PIN NAME FUNCTIONS CE GND BAT VOUT Lx GND Chip Enable Ground Power Input Output Voltage Switching Ground ■FUNCTION CHART PIN NAME SIGNAL STATUS L Stand-by H Active CE * Do not leave the CE pin open. ■ABSOLUTE MAXIMUM RATINGS Ta=25℃ PARAMETER SYMBOL RATINGS UNITS BAT Pin Voltage VBAT -0.3 ~ 7.0 V Lx Pin Voltage VLx -0.3 ~ 7.0 V VOUT Pin Voltage VOUT -0.3 ~ 7.0 V CE Pin Voltage VCE -0.3 ~ 7.0 V 600 (40mm x 40mm SOT-25 Power Dissipation USP-6C 760 (JESD51-7 基板) (*1) Pd 1000 (40mm x 40mm 標準基板) (*1) mW 1250 (JESD51-7 基板) (*1) 700 (40mm x 40mm 標準基板) (*1) WLP-6-01 Operating Ambient Temperature Topr -40 ~ 85 ℃ Storage Temperature Tstg -55 ~ 125 ℃ * GND are standard voltage for all of the voltage. (*1) 標準基板) (*1) This power dissipation figure shown is PCB mounted and is for reference only. Please refer to PACKAGING INFORMATION for the mounting condition. 6/32 XC9141/XC9142 Series ■ELECTRICAL CHARACTERISTICS Ta=25℃ PARAMETER SYMBOL Input Voltage VBAT CONDITIONS Voltage to start oscillation while MIN. TYP. MAX. UNITS CIRCUIT - - 6.0 V ① V ⑤ Output Voltage VOUT Operation Start Voltage VST1 RL=1kΩ - - 0.90 V ① Operation Hold Voltage VHLD RL=1kΩ - 0.65 - V ① fOSC=1.2MHz - 17.0 30.0 μA ③ fOSC=3.0MHz - 26.0 40.0 fOSC=1.2MHz - 1.500 mA ③ fOSC=3.0MHz - 3.000 VBAT= VOUT(T)×0.5 fOSC=1.2MHz 1.02 1.20 1.38 IOUT=100mA MHz ① fOSC=3.0MHz 2.40 3.00 3.60 VBAT=1.2V, fOSC=1.2MHz 85 93 98 VOUT= VOUT(T)-0.2V % ⑤ fOSC=3.0MHz 88 93 98 - - 0 % ⑤ - 165 230 mA ① - 86(*3) - Quiescent Current (XC9142) Supply Current Oscillation Frequency Maximum Duty Cycle Minimum Duty Cycle PFM Switching Current Efficiency (XC9142) Efficiency Iq IDD fOSC DMAX DMIN IPFM EFFI EFFI VOUT=VOUT(T) ×1.03→VOUT(T) ×0.97 VOUT=VBAT= VOUT(T)+0.5V VOUT=VBAT= VOUT(T)-0.2V VOUT=VBAT= VOUT(T)+0.5V VBAT=1.5V, RL is selected with VOUT(T), Refer to Table 1. VBAT= VOUT(T)×0.6, RL is selected with VOUT(T), Refer to Table 1. VBAT= VOUT(T)×0.6, IOUT= 100mA A,B,D,E Stand-by Current ISTB VBAT=VLx=6.0V,VCE=0.0V (*1) Type C,F Type Lx SW "Pch" ON Resistance Lx SW "Nch" ON Resistance Lx SW”H” Leakage Current Lx SW”L” Leakage Current (XC9142C/F) Current Limit Integral Latch Time (D,E,F Type) Latch Release Voltage (D,E,F Type) RLXP VBAT=VLx= 6.0V, IOUT=200mA RLXN ILXLH VBAT=6.0V, VCE=0.0V, VLx=6.0V(*1) Type 90(*3) - - 0.0 1.0 - 1.0 2.4 - 0.3(*2) - Ω ④ - 0.3(*3) - Ω ① - 0.0 1.0 μA ⑦ μA ⑧ ⑦ ⑧ C,F Type - 0.0 1.0 μA ② A ⑥ fOSC=1.2MHz 45 300 725 μs ⑥ fOSC=3.0MHz 25 100 365 μs ⑥ 0.9 1.2 1.5 V ① - VBAT(*3) - V ① VBAT=0.0V,VCE=0.0V,VLx=0.0V,VOUT=6.0V ILIM VBAT= VOUT(T)-0.2V, RLx=1Ω tLAT ① - A,B,D,E ILXLL VBAT= VOUT(T)-0.2V, RLx=1Ω, ① % Time from current limit start to stop Lx oscillation After the integral latch was operated, VLAT_R RL is selected with VOUT(T), Refer to Table 1 VBAT=VOUT(T)-0.2V→0.9V Short-circuit Protection Threshold Voltage VSHORT VBAT=VOUT(T)-0.2V, RL=0Ω (D,E,F Type) 7/32 XC9141/XC9142 Series ■ELECTRICAL CHARACTERISTICS (Continued) PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. 0.6 1.0 2.5 UNITS CIRCUIT ms ⑤ VBAT= VOUT(T)×0.6, VOUT=VOUT(T)× 0.9, Soft-Start Time tSS fOSC=1.2MHz After "H" is fed to CE, the time by when clocks are fOSC=3.0MHz 0.2 0.5 1.0 generated at Lx pin. CL Discharge Resistance (A,D Type) Bypass SW Resistance (B,E Type) RDCHG VBAT= 3.3V,VOUT=3.3V,VCE=0.0V 100 180 400 Ω ② RBSW VBAT= 3.3V,VOUT=0.0V,VCE=0.0V 100 180 400 Ω ② 0.80 - 6.00 V ⑤ GND - 0.20 V ⑤ VOUT= VOUT(T)-0.15V, Applied voltage to VCE, CE ”H” Voltage VCEH CE ”L” Voltage VCEL CE ”H” Current ICEH VBAT=6.0V,VOUT=6.0V, VLx=6.0V, VCE=6.0V -0.1 - 0.1 μA ② CE ”L” Current ICEL VBAT=6.0V,VOUT=6.0V, VLx=6.0V, VCE=0.0V -0.1 - 0.1 μA ② Voltage changes Lx to be generated. VOUT= VOUT(T)-0.15V, Applied voltage to VCE, Voltage changes Lx to“H” level. VOUT(T) = Target voltage Test Conditions: unless otherwise stated, VBAT=1.5V, Vce=3.3V, Lx: OPEN, RLx=56Ω (*1) XC9141A/D,XC9142A/D,XC9142C/F type: VOUT=0V, XC9141B/E,XC9142B/E type: VOUT=OPEN (*2) Design value for the XC9142C/F type. (*3) Designed value Table 1. External Components RL Table VOUT(T) RL UNITS:V UNITS：Ω 1.8≦VOUT(T) < Circuit No.④ > V VOUT Lx VOUT Lx A A BAT BAT CE GND < Circuit No.⑤ > < Circuit No.⑥ > Wave Form Measure Point Wave Form Measure Point Wave Form Measure Point VOUT Lx VOUT Lx RLx=1Ω RLx=56Ω BAT BAT CE GND < Circuit No.⑧ > VOUT Lx IST B A ILXLH CE GND < Circuit No.⑦ > A BAT CE VOUT Lx IST B A GND 10/32 IOUT CE GND ILXLH A BAT CE GND XC9141/XC9142 Series ■TYPICAL APPLICATION CIRCUIT L VBA T VOUT VOUT Lx BAT CE CE GN D CL CIN 【Typical Examples】fOSC=1.2MHz L CL(*1) MANUFACTURER PRODUCT NUMBER VALUE murata LQH5BPN4R7NT0L 4.7μH TDK LTF5022T-4R7N2R0-LC 4.7μH Coilcraft XFL4020-472MEC 4.7μH murata GRM188R60J106ME84 10μF/6.3V(*2) murata GRM188D71A106MA73 10μF/10V(*2) MANUFACTURER PRODUCT NUMBER VALUE TDK LTF5022T-2R2N3R2-LC 2.2μH Coilcraft XFL4020-222MEC 2.2μH murata GRM188R60J106ME84 10μF/6.3V(*2) murata GRM188D71A106MA73 10μF/10V(*2) 【Typical Examples】fOSC=3.0MHz L CL(*1) 【Typical Examples】fOSC=1.2MHz, fOSC=3.0MHz CIN(*1) MANUFACTURER PRODUCT NUMBER VALUE murata GRM188R60J106ME84 10μF/6.3V murata GRM188D71A106MA73 10μF/10V (*1) Select components appropriate to the usage conditions (ambient temperature, input & output voltage). While selecting a part, please concern about capacitance reduction and voltage durability. (*2) In the case of fosc=1.2MHz: If VOUT(T)≧3.5V and the load current rises above 200mA, use two or more in a parallel connection. In the case of fosc=3.0MHz: If VBAT≧2V, VOUT(T)≧3.5V and the load current rises above 200mA, use two or more in a parallel connection. For the actual load capacitance, use a ceramic capacitor that ensures a capacitance equivalent to or greater than the GRM188R60J106ME84 (Murata). If using tantalum or low ESR electrolytic capacitors please be aware that ripple voltage will be higher due to the larger ESR (Equivalent Series Resistance) values of those types of capacitors. Please also note that the IC’s operation may become unstable with such capacitors so that we recommend to test on the board before usage. If using electrolytic capacitor for the CL, please connect a ceramic capacitor in parallel. 11/32 XC9141/XC9142 Series ■OPERATIONAL EXPLANATION The XC9141/XC9142 series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM comparator, phase compensation circuit, N-channel driver transistor, P-channel synchronous rectification switching transistor and current limiter circuit. Lx CFB Load disconnect Controller Phase Compensation RFB1 Error Amp. FB RFB2 CE VOUT PWM comparator PWM/PFM Controller Logic Vref with Soft Start VOUT Current sense RAMP Wave Generator CL Discharge Buffer Driver GND OSC CE Controller Logic VDD Bypass SW VOUT VDD MAX BAT BLOCK DIAGRAM The error amplifier compares the internal reference voltage with the resistors RFB1 and RFB2. Phase compensation is performed on the resulting error amplifier output, to input a signal to the PWM comparator to determine the turn-on time of the N-channel driver transistor during PWM operation. The PWM comparator compares, in terms of voltage level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and delivers the resulting output to the buffer driver circuit to cause the Lx pin to output a switching duty cycle. This process is continuously performed to ensure stable output voltage. The current feedback circuit monitors the N-channel driver transistor’s turn-on current for each switching operation, and modulates the error amplifier output signal to provide multiple feedback signals. This enables a stable feedback loop even when a low ESR capacitor, such as a ceramic capacitor, is used, ensuring stable output voltage. The reference voltage forms a reference that is used to stabilize the output voltage of the IC. After “H” level is fed to CE pin, the reference voltage connected to the error amp increases linearly during the soft start interval. This allows the voltage divided by the internal RFB1 and RFB2 resistors and the reference voltage to be controlled in a balanced manner, and the output voltage rises in proportion to the rise in the reference voltage. This operation prevents rush input current and enables the output voltage to rise smoothly. The ramp wave circuit determines switching frequency. The frequency is fixed internally at 1.2MHz/3.0MHz. The Clock generated is used to produce ramp waveforms needed for PWM operation, and to synchronize all the internal circuits. The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the feedback voltage divided by the internal resistors (RFB1 and RFB2). When the FB is lower than the reference voltage, output voltage of the error amplifier increases. The gain and frequency characteristics of the error amplifier are optimized internally. VDD MAX circuit compares the input voltage and the output voltage then it will select the higher one as the power supply for the IC. The IC enters chip disable state by applying low level voltage to the CE pin. At this time, the N-channel and P-channel synchronous switching transistors are turned OFF. With XC9142C type, the load disconnection function activates even during shutdown, and because the input voltage VBAT and output voltage VOUT are compared to optimally control the orientation of the parasitic diode of the P-channel synchronous switching transistor, a parallel connection with other power supplies is possible. With the XC9141 series and XC9142A/B types, the orientation of the parasitic diode of the P-channel synchronous switching transistor is fixed at anode: VOUT and cathode: Lx during shutdown to break conduction from the input side to the output side by the parasitic diode of the P-channel synchronous switching transistor. When PFM operates, the N-channel driver transistor turns on at the timing of the signal sent from the PWM comparator. The N-channel driver transistor remains on until the current in the coil reaches a constant current (IPFM). The PWM/PFM control circuit compares the signal sent from the PWM comparator to the time it takes the current in the coil to reach a constant current (IPFM), and outputs the pulse that results in a longer on-time of the N-channel driver transistor. This enables smooth switching between PWM and PFM. The XC9141 series directly outputs the signal that is sent from the PWM comparator. 12/32 XC9141/XC9142 Series ■OPERATIONAL EXPLANATION (Continued) The maximum current limit function of XC9141A/B types and XC9142A/B/C types constantly monitors the current flowing in the N-channel driver transistor connected to the Lx pin, and if the current in the N-channel driver transistor exceeds the current limit, the function turns off the N-channel driver transistor. (Please refer to Fig. ILIM①) ① If the current flowing in the N-channel driver transistor exceeds the current limit value (equivalent to the peak coil current), the N-channel driver transistor turns off, and remains off during the clock interval. ② At the next clock, the N-channel driver transistor turns on. If overcurrent continues, ① and ② are repeated. Note that the current in the internal N-channel driver transistor is not the same as the output current IOUT. VOUT(T) VBAT VOUT ILIM ILx RL CE ①② ①② Fig. ILIM ① 13/32 XC9141/XC9142 Series ■OPERATIONAL EXPLANATION (Continued) The maximum current limit function of XC9141D/E and XC9142D/E/F types monitors the current that flows in the N-channel driver transistor connected to the Lx pin, and consists of both maximum current limiting and a latch function. (Please refer to Fig.ILIM②) Short-circuit protection is a latch-stop function that activates when the output voltage drops below the short-circuit protection threshold voltage in the overcurrent state. (Please refer to Fig.ILIM③) ① If the current flowing in the N-channel driver transistor exceeds the current limit value (equivalent to the peak coil current), the N-channel driver transistor turns off, and remains off during the clock interval. In addition, an integral latch timer starts the count. ② The N-channel driver transistor turns on at the next pulse. If in the overcurrent state at this time, the N-channel driver transistor turns off as in (1). The integral latch timer continues the count. ③ If the count of the integral latch timer continues for 300μs typ.(@fosc=1.2MHz), a function that latches the N-channel driver transistor and Pchannel synchronous switching transistor to the off state activates. ④ If no longer in the overcurrent state at the next pulse, normal operation resumes. The integral latch timer stops the count. Limit=300μs typ. (@fosc=1.2MHz) Limit