APW7237

APW7237 1.5MHz, High Efficiency, Step-Up Converter with Internal FET Switch Features General Description Wide 2.7V to 6V Input Voltage Range The APW7237 is a fixed switching frequency (1.5MHz Built-in 0.2Ω 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 Current-Limit Protection 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 APW7237 includes under-voltage lockout, currentlimit, and over-temperature shutdown preventing damage in the event of an output overload. Over-Temperature Protection with Hysteresis 100 Available in a TSOT-23-5A and TDFN2x2-6 Pack- age 80 Lead Free and Green Devices Available (RoHS Compliant) 60 VIN=3.3V Efficiency (%) Applications 40 VIN=5V Cell Phone and Smart Phone PDA, PMP, MP3 Digital Camera Boost Regulators 20 0 0.01 VOUT=12V 0.1 1 Output Current, IOUT (A) Pin Configuration Simplified Application Circuit LX 1 GND 2 FB 3 5 VIN 4 EN TSOT-23-5A Top View VIN 1 GND 2 EN 3 6 LX 5 GND 4 FB TDFN2x2-6 Top View VIN 5V C1 4.7µF ON OFF L1 10µH VIN LX GND APW7237 EN FB VOUT R1 1.2MΩ 12V C2 4.7µF R2 137kΩ ANPEC reserves the right...