AIC2323

AIC2323 3.2A 550k/1.1MHz Synchronous PWM  FEATURES  2.5V to 6V Input Voltage Range  Adjustable Output Voltage from 0.8V to Vin  3.2A Guaranteed Output Current  Up to 95% Efficiency  Low RDS(ON) Internal Switches: 110mΩ  No Schottky Diode Required  100% Duty Cycle in Low Dropout Operation  Fixed 550k/1.1MHz Operating Frequency  Optional Soft-Start Internal Fixed 1ms Soft- Start (in SOP-8) Step-Down Converter  DESCRIPTION The AIC2323 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. Shutdown mode places the device in standby, reducing supply current to under 2µA. Other features of the AIC2323 include high efficiency for all load range, low dropout voltage, short circuit protection, and over temperature protection.  APPLICATIONS  LCD TV  Portable Products  Wireless and DSL Modems  Solid-State Drives  Battery-Operated Devices (1 Li-Ion or 3 NiMH/ NiCd) Analog Integrations Corporation Si-Soft Research Center DS-2323G-03 20121212 3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C. TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1  APPLICATIONS CIRCUIT VIN 5V C1 10uF R1 R4 10Ω 100KΩ PG C2 0.1uF ON OFF 1 VIN 8 EN 7 PGOOD 2 VCC 9 PGND AIC2323 LX FB REF SS GND 10 5 3 6 4 AIC2323 L1 2.2uH R2 50KΩ C5 0.22uF C4 0.1uF R3 16KΩ VOUT 3.3V C3 22uF Fig. 1 Typical Application Circuit for DFN...