描述 Description

Low Power LED Driver

DW8505A is an instant On/Off LED driver for low power LED applications. At DW8505A output stage,
one regulated current port is designed to provide a uniform and constant current sink for driving LED
within a large range of VF variations. DW8505A provides a consistent current source. User may adjust
the output current from up to 100mA 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. DW8505A 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(yīng)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