XC6372A501PR-G

XC6371/XC6372 Series ETR0402_005 PWM,PWM/PFM Controlled Step-up DC/DC Converters ☆GreenOperation Compatible ■GENERAL DESCRIPTION The XC6371/XC6372 series is 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 0.01V (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. Packages with CE (chip enable) pin are also available which can reduce the IC power consumption during during stand-by mode. 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. ■APPLICATIONS ■FEATURES ●Smart phones / Mobile phones Operation Start Voltage Range : 0.9V~10V Output Voltage Range : 2.0V~7.0V (0.1V increments) Highly Accurate : ±2.5% Oscillation Frequency : 50kHz, 100kHz, 180kHz (±15%) Maximum Output Currents : 100mA(TYP.) @ VIN=3.0V, VOUT=5.0V * Highly Efficient : 85%(TYP.) @ VIN=3.0V, VOUT=5.0V * Built-in switching transistor. CE pin type (XC6371C, XC6372C) Phase compensation and soft start-up circuits built-in CMOS Low Power Consumption Packages : SOT-89, SOT-89-5, USP-6B Environmentally Friendly: EU RoHS Compliant, Pb Free * Performance depends on external components and PCB layout. ●Note PCs / Tablet PCs ●Digital still cameras / Camcorders ●Mobile devices / terminals ■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE CHARACTERISTICS 1/17 XC6371/XC6372 Series ■PIN CONFIGURATION *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. ■PIN ASSIGNMENT XC6371/XC6372A PIN NUMBER SOT-89 USP-6B 1 2 3 － 6 1 4 2, 3, 5 PIN NAME FUNCTION VSS VOUT Lx NC Ground Output Voltage Monitor/IC Internal Power Supply Switch No Connection PIN NAME FUNCTION XC6371/XC6372C PIN NUMBER 2/17 SOT-89-5 USP-6B 5 2 4 3 6 1 4 3 VSS VOUT Lx CE Ground Output Voltage Monitor/IC Internal Power Supply Switch Chip Enable 1 2, 5 NC No Connection XC6371/XC6372 Series ■PRODUCT CLASSIFICATION ●Selection Guide START PWM XC6371 PWM/PFM XC6372 Standard XC6371A Chip Enable XC6371C Standard XC6372A Chip Enable XC6372C ●Ordering Information XC6371①②③④⑤⑥-⑦(*1) : PWM controlled XC6372①②③④⑤⑥-⑦(*1) : PWM/PFM switching control DESIGNATOR DESCRIPTION SYMBOL ① Type of DC/DC Converter A C ②③ Output Voltage Integer ④ Oscillation Frequency 0 1 2 PR ⑤⑥-⑦ Packages Taping Type (*2) PR-G DR DR-G (*1) DESCRIPTION 3-pin DC/DC converter with built-in switching transistor Stand-by capability with built-in switching transistor e.g. VOUT=3.5V→②=3, ③=5 50kHz 100kHz 180kHz SOT-89 (XC6371/72 A type) SOT-89-5 (XC6371/72 C type) SOT-89 (XC6371/72 A type) SOT-89-5 (XC6371/72 C type) USP-6B USP-6B The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant. (*2) The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local Torex sales office or representative. (Standard orientation: ⑤R-⑦, Reverse orientation: ⑤L-⑦) 3/17 XC6371/XC6372 Series ■BLOCK DIAGRAMS XC6371/XC6372A, C (The VOUT pin serves also as VDD) ( p ) Lx VLx l imi ter VDD Vref Buffer PWM Control OSC 50/100/180KHz VSS Soft Start VOUT Phase comp + － EXT Chip Enable CE Note: The CE pin is only used with the XC6371C. XC6371/72/73E VDD VDD Lx VLx l imi ter Buffer VSS PWM Control OSC 50/100/180KHz Soft Start Vref Phase comp VOUT + － EXT Note: Built-in transistor type units use the Lx pin. ■ABSOLUTE MAXIMUM RATINGS Ta=25℃ 4/17 PARAMETER VOUT Input Voltage LX pin Voltage LX pin Current CE Input Voltage SOT-89, SOT-89-5 Power Dissipation USP-6B VDD Input Voltage Operating Temperature Range SYMBOL VOUT VLX ILX VCE Storage Temperature Range Pd RATINGS 12 12 400 12 500 UNITS V V mA V mW VDD Topr 100 12 -30~＋80 V ℃ Tstg -40~＋125 ℃ XC6371/XC6372 Series ■ELECTRICAL CHARACTERISTICS VOUT=5.0V, FOSC=100kHZ XC6371/72A501 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 (*1) No Load Input Current IIN VIN=VOUT×0.8, IOUT=0mA 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 Ta=25℃ MAX. UNITS 5.125 V V 0.90 V MIN. 4.875 10 - TYP. 5.000 - - - 0.80 V - 12.8 25.7 μA - 80.2 133.8 μA - 8.2 16.5 μA - 1.4 2.4 Ω 85 80 10 100 87 17 1.0 115 92 25 μA kHz % % 0.7 - 1.3 V 4.0 85 10.0 20.0 % 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)