AL5802LP

Document number: DS37549 Rev. 4 - 2

7 of 10

www.diodes.com

March 2016

© Diodes Incorporated

AL5802LP

Figure 12 Typical Application Circuit for

Linear Mode Current Sink LED Driver

Figure 13 Application Circuit for Increasing LED Current

PWM dimming can be achieved by driving the EN pin. An external open-collector NPN transistor or open-drain N-channel MOSFET can be used to

drive the EN pin as shown in Figure 14. Dimming is achieved by turning the LEDs ON and OFF for a portion of a single cycle. The PWM signal can

be provided by a micro-controller or analog circuitry. Figure 15 is a typical response of LED current vs. PWM duty cycle on the EN pin.

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Figure 14 Application Circuits for LED Driver with PWM Dimming Functionality