AS3145中文资料320kHz, 28V/2A Step-down LED Driver数据手册Anisem规格书

描述 Description

The AS3145 is a PWM buck converter designed to provide a simple, high efficiency solution for driving high power LEDs. With a 0.25V reference voltage feedback control to minimize power dissipation, The AS3145 includes a high current P-MOSFET, high efficiency and excellent transient characteristics. The PWM control circuit is able to the duty ratio from 0 to 100%. The features include user accessible EN pin for enabling, thermal shutdown, cycle-by-cycle current limit and over current protection.

The AS3145 is available in a low profile SOP-8L package

特性 Features

• Input Voltage Range: 3.6V to 28V

• Feedback Voltage: 0.25V ± 2%

• Low Quiescent Current: 4mA(Typ.)

• Fixed Operating Frequency: 320KHz(Typ.)

• Output Current: 2A

• Internal Soft Start Function

• Over Current Protection

• Thermal Shutdown

• Cycle-by-cycle Current Limit

• Internal Built-in P-MOSFET

• Package: SOP-8L

应用 Application

• High Power LED Driver

• MR16 & GU10 Solution

• Constant Current Source

• General Lighting Solution