AIC2362
2A 550K/1.1MHz Synchronous PWM/PSM Step-Down Converter with Light Load Efficiency
- FEATURES
-
- 2.5V to 6V Input Voltage Range
- Adjustable Output Voltage from 0.8V to Vin
- 2.0A Guaranteed Output Current
- 93% Efficiency at Heavy Load(Vin=5V, Vout=3.3V, Iout=2.0A)
- 95% Efficiency at Moderate Load(Vin=5V, Vout=3.3V, Iout=1.0A)
- 90% Efficiency at Light Load(Vin=5V, Vout=3.3V, Iout=20mA)
- Low RDS(ON) Internal Switches: 110mOhm
- No Schottky Diode Required
- 100% Duty Cycle in Low Dropout Operation
- Optional 550KHz/1.1MHz Operating Frequency
- Optional Soft-Start Internal Fixed 1ms Soft-Start
- APPLICATIONS
-
- LCD TV
- Multi-function Peripheral
- Cellular Phones
- CPU I/O Supplies
- PDAs and Handy-Terminals
- Battery-Operated Devices (1 Li-Ion or 3 NiMH/ NiCd).
- DESCRIPTION
- The AIC2362 is a low-noise, pulse-widthmodulated (PWM), DC-DC step-down converter. The device features an internal synchronous rectifier for high efficiency; it requires no external Schottky diode. The AIC2362 is ideally suited for Li-Ion battery applications. Automatic PWM/PSM mode extends battery life and enhance
efficiency by switching to a pulse-skippingmodulated mode during light load. Shutdown mode places the device in standby, reducing supply current to under 2uA.
Other features of the AIC2362 include high efficiency for all load range, low dropout voltage, short circuit protection, and over temperature protection.
- TYPICAL APPLICATION