描述 Description

High Power LED Driver

DW8502 is an instant On/Off LED driver for high power LED applications. At DW8502 output stage,
one regulated current port is designed to provide a uniform and constant current sink for driving LEDs
within a large range of VF variations. DW8502 provides a consistent current source. User may adjust
the output current up to 2.5A through an external resistor, Rs, which gives users flexibility in controlling
the light intensity of LED. In addition, users can precisely adjust LED brightness from 0% to 100% via
output enable (EN) with Pulse Width Modulation. DW8502 also guarantees that LED can be cascaded
to maximum 40V at the output port.

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

應用 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