AS1301数据手册电源-外部/内部（板外）的直流转换器规格书PDF

描述 Description

The AS1301 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 AS1301 can supply 0.8A (max.) of load current from a 2.5V to 6.5V input voltage. The output voltage for the AS1301-adj can be regulated as low as 0.6V, The AS1301 can also run at 100% duty cycle for low dropout applications.\r
\r
The AS1301 is available in a low profile 5-pin, TSOT23 package

特性 Features

• High Efficiency：Up to 95%\r
\r
• 1.5MHz Constant Switching Frequency\r
\r
• 0.8A Available Load Current\r
\r
• 2.5V to 6.5V Input Voltage Range:\r
\r
• Output Voltage as low as 0.6V\r
\r
• 100% Duty Cycle In Dropout\r
\r
• Current Mode Control\r
\r
• Short Circuit Protection\r
\r
• Thermal Fault Protection\r
\r
• <1μA Shutdown Current\r
\r
• Space Saving 5-pin TSOT23 Package

应用 Application

• Distributed Power Systems\r
\r
• Battery Charger\r
\r
• Pre-Regulator for Linear Regulators\r
\r
• DSL Modems