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
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