AIC2367中文资料5A 1MHz Synchronous PWM/PFM Step-Down Converter with Light Load Efficiency数据手册AIC规格书

描述 Description

The AIC2367 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. The AIC2367 is ideally suited for Li-Ion battery applications. Automatic PWM/PFM mode extends battery life and enhance efficiency by switching to a pulse-frequency-modulated mode during light load. Shutdown mode places the device in standby, reducing supply current to under 1uA.

Other features of the AIC2367 include high efficiency for all load range, low dropout voltage, short circuit protection, and over temperature protection.

特性 Features

• 3.0V to 5.5V Input Voltage Range
• Adjustable Output Voltage from 0.8V to Vin
• 5A Guaranteed Output Current
• 90% Efficiency at Heavy Load (Vin=5V, Vout=3.3V, Iout=5A)
• 91% Efficiency at Moderate Load (Vin=5V, Vout=3.3V, Iout=2.5A)
• Low RDS(ON) Internal Switches: 45 mOhm
• No Schottky Diode Required
• 100% Duty Cycle in Low Dropout Operation
• Fixed 1MHz Operating Frequency
• Internal Fixed 1ms Soft-Start

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)