APW7137

www.DataSheet4U.com APW7137 1MHz, High Efficiency, Step-Up Converter with Internal FET Switch Features Wide 2.5V to 6V Input Voltage Range Built-in 0.6Ω N-Channel MOSFET Built-in Soft-Start High Efficiency up to 90% <1µA Quiescent Current During Shutdown Current-Mode Operation - Stable with Ceramic Output Capacitors - Fast Transient Response General Description The APW7137 is a fixed switching frequency (1MHz typical), current-mode, step-up regulator with an integrated N-channel MOSFET. The device allows the usage of small inductors and output capacitors for portable devices. The current-mode control scheme provides fast transient response and good output voltage accuracy. The APW7137 includes under-voltage lockout, current limit, and over-temperature shutdown preventing damage in the event of an output overload. 100 90 80 VIN=5V Current-Limit Protection Over-Temperature Protection with Hysteresis Available in a Tiny 5-Pin SOT-23 Package (RoHS Compliant) Lead Free and Green Devices Available E f f i c i e n c y ,η (%) 70 60 50 40 30 20 VIN=3.3V Applications Cell Phone and Smart Phone PDA, PMP, MP3 Digital Camera Boost Regulators 10 0 0.1 1 10 VOUT=12V 100 1000 Output Current, IOUT (mA) Pin Configuration Simplified Application Circuit VIN L1 10µH 5 VIN 2 GND LX 1 R1 1.2MΩ VOUT 12V C2 4.7µF LX 1 GND 2 FB 3 5 VIN 4 EN 5V C1 4.7µF SOT-23-5 (Top View) OFF ON 4 APW7137 EN FB 3 R2 137kΩ ANPEC reserves the right to make changes to imp...