The 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 easily provides users a

consistent current source. User may adjust the output

current from up to 2.5A through an external resistor ,RS,

which gives users flexibility in controlling the light intensity

of LEDs. In addition, users can precisely

adjust LED brightness from 0 to 100 via output enable

(EN) with Pulse Width Modulation. DW8502 also

guarantees that LEDs can be cascaded to maximum

40V at the output port.

Descriptions

• Constant output current invariant to supply and load

voltage change

• 5V to 40V supply voltage

• Up to 2.5A adjustable regulated output current

• Built-in thermal derating circuit

• Available PWM dimming control

• Output current adjusted through an external resistor

• TO-263 Package

• TO-220 Package

Applications

Features

• 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

• Automotive lighting

• General purpose constant current source