APW7290

APW7290 1.5MHz, 1A Synchronous Buck Regulator Features General Description 1A Output Current Support 4 AA alkaline, NiCd or NiMH batteries Wide 3.5V~7.2V Input Voltage Fixed 1.5MHz Switching Frequency Low Dropout Operating at 100% duty cycle Low 25µA Quiescent Current Integrate Synchronous Rectifier 0.6V Low Reference Voltage <0.5µA Input Current during Shutdown Current-Mode Operation with Internal Compensation - Stable with Ceramic Output Capacitors - Fast Line Transient Response Short-Circuit Protection Over-Temperature Protection with Hysteresis Available in TDFN2x2-8 Package Lead Free and Green Devices Available (RoHS Compliant) Applications E-Book Toy Portable Instrument The APW7290 is a high efficiency monolithic synchronous buck regulator. APW7290 operates with a constant 1.5MHz switching frequency and using the inductor current as a controlled quantity in the current mode architecture. The 3.5V to 7.2V input voltage range makes the APW7290 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable electrical devices. The internally fixed 1.5MHz operating frequency allows the use of small surface mount inductors and capacitors. The synchronous switches included inside increase the efficiency and eliminate the need for an external Schottky diode. The APW7290 is available in TDFN2x2-8 package. Pin Configuration GND 1 VIN 2 RUN 3 LBI 4 8 LBO 7 S...