DW8532中文资料LED 照明 : LED Lighting数据手册DongWoon规格书

描述 Description

Non-Isolated Buck LED Controller with PFC and No Auxiliary Winding

DW8532 is a constant current LED controller with high current accuracy which applies to single
stage step-down power factor corrected LED drivers. High accuracy of output current is achieved by sampling the output current directly. Critical conduction mode operation reduces the switching losses and largely increases the efficiency. DW8532 is supplied from the output directly and the auxiliary winding is not needed. DW8532 has multi-protection functions which largely enhances the safety and the reliability of system including: VCC over-voltage protection, VCC UVLO, shortcircuit protection, LED open protection, cycle-by-cycle current limit and overtemperature protection.

特性 Features

- Constant output current invariant to supply and load voltage change
- 5V to 40V supply voltage
- Up to 300mA adjustable regulated output current
- Built-in thermal derating circuit
- Available PWM dimming control
- Output current adjusted through an external resistor
- SOT89-5L Package

应用 Application

- LED light bulbs
- Signage and decorative LED lighting
- General lighting of flat panel displays
- RGB backlighting LED driver
- Current stabilizer with DC/DC or AC/DC
- General purpose constant current source