AIC2362

AIC2362 2A 550k/1.1MHz Synchronous PWM/PSM Step-Down Converter with High Light-load Efficiency  FEATURES  DESCRIPTION  2.5V to 6V Input Voltage Range The AIC2362 is a low-noise, pulse-width-  Adjustable Output Voltage from 0.8V to Vin modulated (PWM), DC-DC step-down converter.  2.0A Guaranteed Output Current The device features an internal synchronous  93% Efficiency at Heavy Load rectifier for high efficiency; it requires no external (Vin=5V, Vout=3.3V, Iout=2.0A) Schottky diode. The AIC2362 is ideally suited for  96% Efficiency at Moderate Load Li-Ion battery applications. Automatic PWM/PSM (Vin=5V, Vout=3.3V, Iout=1.0A) mode extends battery life and enhance  90% Efficiency at Light Load efficiency by switching to a pulse-skipping- (Vin=5V, Vout=3.3V, Iout=20mA)  Low RDS(ON) Internal Switches: 110mΩ modulated mode during light load. Shutdown mode places the device in standby, reducing  No Schottky Diode Required supply current to under 2µA.  100% Duty Cycle in Low Dropout Operation Other features of the AIC2362 include high  Fixed 550k/1.1MHz Operating Frequency efficiency for all load range, low dropout voltage,  Optional Soft-Start Internal Fixed 1ms Soft- short circuit protection, and over temperature Start protection.  APPLICATIONS  LCD TV  Portable Products  Wireless and DSL Modems  Solid-State Drives  Battery-Operated Devices (1 Li-Ion or 3 NiMH/ NiCd)  APPLICATIONS CIRCUIT VIN 8 VIN LX 7 L1 2.2uH 5V R1 10Ω ...