XC6371

☆GO-Compatible ◆CMOS Low Power Consumption ■APPLICATIONS ◆Operating Voltage :0.9V~10.0V ●Cellular phones, Pagers ◆Output Voltage Range :2.0V~7.0V ●Palmtops ◆Output Voltage Accuracy :±2.5% ●Cameras, Video recorders ◆Oscillation Frequency :50kHz, 100kHz, 180kHz(XC6371/72) ●Portable products 30kHz (XC6373) ■GENERAL DESCRIPTION The XC6371/6372/6373 series are a group of PWM controlled and PWM/PFM controlled step-up DC/DC converters. The built-in 1.4Ω switching transistor type enables a step-up circuit to be configured using only three components, a coil, a diode, and a capacitor. Output voltage can be selectable in the range from 2.0V to 7.0V in increments of 100mV (accuracy: ± 2.5%). Oscillation frequency is also selectable from 50kHz, 100kHz, and 180kHz (accuracy: ± 15%) for the XC6371 and the XC6372 series. Soft-start time is internally set and offers protection against in-rush currents when the power is switched on and prevents voltage overshoot. 5 pin packages, which are provided with either a CE (chip enable) function that reduces power consumption during shut-down mode, or a VDD pin (separated power and voltage detect pins) are available. The XC6371 series is the standard PWM controlled products. The control of the XC6372 series switches from PWM to PFM control during light loads when automatically switching is selected and the series is highly efficient from light loads to large output currents. Since the XC6373 series is a low noise, it is suitable for a wireless circuit. Also the series is particularly suited for use with pager applications because oscillation frequency is set at 30kHz (±20%) so as to attain the lowest consumption current possible. ■FEATURES Operation Start Voltage Range: 0.9V~10V Output Voltage Range : 2.0V~7.0V in 100mV increments Highly Accurate : Setting voltage accuracy±2.5% Oscillation Frequency : 50kHz, 100kHz, 180kHz (±15%) selectable (XC6371/72) 30kHz (XC6373) Maximum Output Currents (Tr. built-in) : 100mA(TYP.) @ VIN=3.0V, VOUT=5.0V * Highly Efficient (Tr. built-in) : 85%(TYP.) @ VIN=3.0V, VOUT=5.0V * Built-in switching transistor type. Five-lead packaged units offer either chip enable or independent VOUT pin option. Phase compensation and soft start-up circuits built-in. Small Packages :SOT-89, SOT-89-5,USP-6B *: Performance depends on external components and PCB layout. ■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE CHARACTERISTICS XC6371 6372 6373 ETR0402_001.doc 581 XC6371/6372/6373 Series ■PIN CONFIGURATION ■PIN ASSIGNMENT XC6371/72/73A PIN NUMBER SOT-89 1 2 3 － USP-6B 6 1 4 2, 3, 5 PIN NAME VSS VOUT Lx NC *The dissipation pad for the USP-6B 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 pin No.1. FUNCTION Ground Output Voltage Monitor/IC Internal Power Supply Switch No Connection XC6371/72/73C PIN NUMBER SOT-89-5 5 2 4 3 1 USP-6B 6 1 4 3 2, 5 PIN NAME VSS VOUT Lx CE NC FUNCTION Ground Output Voltage Monitor/IC Internal Power Supply Switch Chip Enable No Connection XC6371/72/73E PIN NUMBER SOT-89-5 5 2 4 3 1 USP-6B 6 1 4 3 2, 5 PIN NAME VSS VDD Lx VOUT NC FUNCTION Ground IC Internal Power Supply Switch Output Voltage Monitor No Connection 582 XC6371/6372/6373 Series ■PRODUCT CLASSIFICATION ●Selection Guide START PWM Low Frequency PWM XC6371 XC6373 XC6371/73A XC6371/73C XC6371/73E Standard Chip Enable Separated VDD/VOUT PWM/PFM Standard Chip Enable Separated VDD/VOUT XC6372A XC6372C XC6372E ●Ordering Information XC6371①②③④⑤⑥ : PWM controlled XC6372①②③④⑤⑥ : PWM/PFM switching control DESIGNATOR ① DESCRIPTION Type of Regulator SYMBOL A C E Integer 0 1 2 P D R L DESCRIPTION : 3-pin regulator with built-in switching transistor : Stand-by capability with built-in switching transistor : Separated VDD and VOUT with built-in switching transistor : e.g. VOUT=3.5V→②=3, : 50kHz : 100kHz : 180kHz : SOT-89 (XC6371/72 A type) : SOT-89-5 (XC6371/72 C/D type) : USP-6B : Embossed tape, standard feed : Embossed tape, reverse feed ③=5 XC6371 Series ②③ Output Voltage ④ Oscillation Frequency ⑤ Package ⑥ Device Orientation XC6373①②③④⑤⑥ : PWM controlled DESIGNATOR ① ② ③ ④ ⑤ DESCRIPTION Type of Regulator SYMBOL A C E Integer 0 P D R L DESCRIPTION : 3-pin regulator with built-in switching transistor : Stand-by capability with built-in switching transistor : Separated VDD and VOUT with built-in switching transistor : e.g. VOUT=3.5V→②=3, : 30kHz : SOT-89 (XC6373 A type) : SOT-89-5 (XC6373 C/D type) : USP-6B : Embossed tape, standard feed : Embossed tape, reverse feed ③=5 Output Voltage Oscillation Frequency Package ⑥ Device Orientation 583 XC6371/6372/6373 Series ■PACKAGING INFORMATION ●SOT-89 ●SOT-89-5 ●USP-6B 584 XC6371/6372/6373 Series ■MARKING RULE [XC6371/72] ●SOT-89, SOT-89-5 ① Represents product series MARK A A S PRODUCT SERIES XC6371A XC6371C XC6371E MARK 1 1 3 PRODUCT SERIES XC6372A XC6372C XC6372E ② ① ③ ④ ② Represents integer of output voltage and oscillation frequency OUTPUT VOLTAGE (V) 50kHz B C F E F H K OSCILLATION FREQUENCY 100kHz 180kHz 1 1 2 2 3 3 4 4 5 5 6 6 7 7 1 2 SOT-89 (TOP VIEW) 3 1.x 2.x 3.x 4.x 5.x 6.x 7.x ③ Represents decimal number of output voltage and oscillation frequency OUTPUT VOLTAGE (V) x.0 x.1 x.2 x.3 x.4 x.5 x.6 x.7 x.8 x.9 50kHz 0 1 2 3 4 5 6 7 8 9 OSCILLATION FREQUENCY 100kHz 180kHz 0 A 1 B 2 C 3 D 4 E 5 F 6 H 7 K 8 L 9 M SOT-89-5 (TOP VIEW) ④ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted). 585 XC6371/6372/6373 Series ■MARKING RULE (Continued) [XC6371/72] (Continued) ●USP-6B ① Represents product series MARK 5 2 ② Represents product classification USP-6B (TOP VIEW) MARK A C E PRODUCT SERIES XC6371A XC6371C XC6371E PRODUCT SERIES XC6371xxxxDx XC6372xxxxDx ③④ Represents output voltage (ex.) MARK ③ 3 5 ④ 3 0 OUTPUT VOLTAGE (V) 3.3 5.0 ⑤ Represents oscillation frequency MARK 0 1 2 OSCILLATION FREQUENCY (kHz) 50 100 180 ⑥ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) Note: No character inversion used. 586 XC6371/6372/6373 〔XC6373〕 Series ■MARKING RULE (Continued) ●SOT-89,SOT-89-5 ① Represents product series MARK A A S FUNCTION Built-in Transistor CE Built-in Transistor Separated VDD and VOUT Built-in Transistor PRODUCT SERIES XC6372AxxxPx XC6372CxxxPx XC6372ExxxPx ② ① ③ ④ ② Represents integer of output voltage and oscillation frequency OUTPUT VOLTAGE (V) 1 2 SOT-89 (TOP VIEW) 3 1.x 2.x 3.x 4.x 5.x 6.x 7.x OSCILLATION FREQUENCY (PRODUCT SERIES) 30kHz (XC6373xxx0Px) B C F E F H K ③ Represents decimal number of output voltage and oscillation frequency OUTPUT VOLTAGE (V) x.0 x.1 x.2 x.3 x.4 x.5 x.6 x.7 x.8 x.9 OSCILLATION FREQUENCY (PRODUCT SERIES) 30kHz (XC6373xxx0Px) 0 1 2 3 4 5 6 7 8 9 SOT-89-5 (TOP VIEW) ④ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted). 587 XC6371/6372/6373 Series ■BLOCK DIAGRAMS XC6371/72/73A, C (The VOUT pin serves also as VDD) ( p ) Soft Start Vref Phase comp Lx VLx l imi ter Buffer PWM Control OSC 50/100/180KHz VDD VOUT VSS EXT + － Chip Enable CE Note: The CE pin is only used with the XC6371C. XC6371/72/73E VDD Lx VLx l imi ter Buffer PWM Control OSC 50/100/180KHz Soft Start Vref Phase comp VDD VSS VOUT EXT + － Note: Built-in transistor type units use the Lx pin. ■ABSOLUTE MAXIMUM RATINGS Ta=25℃ PARAMETER VOUT Input Voltage LX pin Voltage LX pin Current CE Input Voltage SOT-89, 89-5 Power Dissipation USP-6B VDD Input Voltage Operating Temperature Range Storage Temperature Range SYMBOL VOUT VLX ILX VCE Pd VDD Topr Tstg RATINGS 12 12 400 12 500 100 12 -30~＋80 -40~＋125 UNITS V V mA V mW V ℃ ℃ 588 XC6371/6372/6373 Series ■ELECTRICAL CHARACTERISTICS VOUT=5.0V, FOSC=100kHZ XC6371/72A501PR PARAMETER SYMBOL CONDITIONS Output Voltage VOUT Maximum Input Voltage VIN Operation Start Voltage VST1 External Components Connected, IOUT=1mA No external components. Apply voltage to VOUT Oscillation Start Voltage VST2 Lx : 10kΩ pull-up to 5V No Load Input Current IIN VIN=VOUT×0.8, IOUT=0mA (*1) Same as VST2, Supply Current 1 IDD1 Apply output voltage×0.95 to VOUT Same as VST2, Supply Current 2 IDD2 Apply output voltage×1.1 to VOUT Lx Switch-On RSWON Same as IDD1, VLX=0.4V Resistance Lx Leak Current ILXL No external components. VOUT=VLX=10V Oscillation Frequency FOSC Same as IDD1. Measuring of Lx waveform Maximum Duty Ratio MAXDTY Same as IDD1. Measuring of Lx waveform PFM Duty Ratio (*4) PFMDTY Same as IDD1. Measuring of Lx waveform Same as IDD1. Apply output voltage to Lx, Lx Limit Voltage VLXLMT Voltage required to produce FOSC×2 Efficiency EFFI Slow-Start Time TSS MIN. 4.875 10 85 80 10 0.7 4.0 TYP. 5.000 12.8 80.2 8.2 1.4 100 87 17 85 10.0 Ta=25℃ MAX. UNITS 5.125 V V 0.90 V 0.80 25.7 133.8 16.5 2.4 1.0 115 92 25 1.3 20.0 V μA μA μA Ω μA kHz % % V % mS NOTE: Unless otherwise stated, VIN=VOUT×0.6, IOUT=50mA. See Typical Application Circuits, Circuit1 *1: The Schottky diode (SD) must be type MA735, with reverse current (IR)