The DW8520 is ideally suited for buck converter topology
LED driver IC.
It includes an 9V~16V linear regulator which allows it to
work from a wide range of input voltages without the
need for an external low voltage supply.
The DW8520 includes a PWM dimming input that can
accept an external control signal with a duty ratio of 0-
100% and a frequency of up to a few kilohertz.
The DW8520 is available in a thermally enhanced 8 pin
SOIC package.

- Buck converter topology LED drivers
- Internal zener regulator
- Constant frequency or constant off-time operation
- Linear and PWM dimming capability
- Open loop peak current controller
- High efficiency up to 90%
- Power down to 1mA maximum
- Thermally enhanced 8-lead SOIC package