Descriptions

The DW8501 is an instant On/Off LED driver for high

power LED applications. At DW8501 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. DW8501 easily provides users a

consistent current source. User may adjust the output

current from up to 1.5A 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. DW8501 also

guarantees that LEDs can be cascaded to maximum

40V at the output port.

Features

• Constant output current invariant to supply and load

voltage change

• 5V to 40V supply voltage

• Up to1.5A adjustable regulated output current

• Built-in thermal derating circuit

• Available PWM dimming control

• Output current adjusted through an external resistor

• TO-252, SOT-223 Package

Applications

• 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