APW7178

APW7178 1.5MHz, 1A Synchronous Buck Regulator Features 1A Output Current Wide 2.7V~6.0V Input Voltage Fixed 1.5MHz Switching Frequency Low Dropout Operating at 100% Duty Cycle 25µA Quiescent Current Synchronous Rectifier 0.6V Reference Voltage <0.5µA Input Current During Shutdown Short-Circuit Protection Over-Temperature Protection Available in TDFN2x2-6 Packages Lead Free and Green Devices Available (RoHS Compliant) General Description APW7178 is a 1.5MHz high efficiency monolithic synchronous buck regulator. Design with current mode scheme, the APW7178 is stable with ceramic output capacitor. Input voltage from 2.7V to 6.0V makes the APW7178 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 using of small surface mount inductors and capacitors. The synchronous switches included inside increase the efficiency and eliminate the need of an external Schottky diode. The APW7178 is available in TDFN2x2-6 packages. Simplified Application Circuit APW7178 IIN VIN C1 4.7µF (MLCC) PS RUN FB GND R2 SW R1 C3 C2 10µF (MLCC) L1 2.2µH Applications VIN VOUT HD STB BT Mouse PND Instrument Portable Instrument Pin Configuration APW7178 R1 ≤ 1MΩ is recommended R2 ≤ 200KΩ is recommended APW7178-10/12/18/33 L1 PS RUN VIN 1 2 3 6 5 4 FB/VOUT GND SW VIN IIN VIN SW 2.2µH VOUT C2 10...