AS1307中文资料1.5MHz, 5V/1.5A Synchronous Step-down数据手册Anisem规格书

描述 Description

The AS1307 is a 1.5MHz 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 AS1307 can supply 1.5A (max.) of load current from a 2.5V to 6.5V input voltage. The output voltage for the AS1307-adj can be regulated as low as 0.6V, The AS1307 can also run at 100% duty cycle for low dropout applications.

The AS1307 is available in a low profile 5-pin, TSOT23 package

特性 Features

• High Efficiency：Up to 95%

• 1.5MHz Constant Switching Frequency

• 1.5A 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