AS1308中文资料1.0MHz, 5V/2A Synchronous Step-down 数据手册Anisem规格书

描述 Description

The AS1308 is a 1MHz constant frequency current mode PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. The AS1308 can supply 2A (max.) of load current from a 2.5V to 6.5V input voltage. The output voltage for the AS1308-adj can be regulated as low as 0.6V, The AS1308 can also run at 100% duty cycle for low dropout applications.

The AS1308 is available in a low profile 5-pin, TSOT23 package

特性 Features

• High Efficiency：Up to 97%

• 1MHz Constant Switching Frequency

• 2A Available Load Current

• 2.5V to 6.5V Input Voltage Range:

• Output Voltage as low as 0.6V

• 100% Duty Cycle In Dropout

• Current Mode Control

• Short Circuit Protection

• Thermal Fault Protection

• <1μA Shutdown Current

• Space Saving 5-pin TSOT23 Package

应用 Application

• Distributed Power Systems

• Battery Charger

• Pre-Regulator for Linear Regulators

• DSL Modems