AIC2324中文资料4A Synchronous PWM Step-Down Converter with Light Load Efficiency数据手册AIC规格书

描述 Description

The AIC2324 is a low-noise, pulse-width-modulated (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 AIC2324 include high efficiency, low dropout voltage, short circuit protection, over temperature protection, and over voltage protection. It is available in SOP-8E and DFN-12 (3x3) packages.

特性 Features

• 2.5V to 6V Input Voltage Range
• Adjustable Output Voltage from 0.8V to Vin
• 4.0A Guaranteed Output Current
• Up to 95% Efficiency on Heavy Load (Vin=3.3V, Vout=2.5V, Iout=2.0A)
• Low RDS(ON) Internal Switches: 70mOhm
• No Schottky Diode Required
• 100% Duty Cycle in Low Dropout Operation
• Optional 550KHz/1.2MHz Operating Fre-quency
• Optional Programmable Soft-Start (in DFN-12) or Internal Fixed 1ms Soft-Start (in SOP-8)
• Optional Power Good Monitor (Only in DFN-12 Package)
• SCP, OTP, OVP

应用 Application

• 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)