AL8862

Document number: DS40375 Rev. 1 - 2

2 of 16

www.diodes.com

December 2017

© Diodes Incorporated

AL8862

Typical Applications Circuit

VIN SET

CTRL

GND

SW

C1

L1

D1

AL8862

Pin Descriptions

Pin Number

Pin Name

Function

1

SET

output current.

2,7

GND

Ground of IC

3

NC

No connection

4

VIN

Input voltage (5

V to 60V). Decouple to ground with 10μF or higher X7R ceramic capacitor close to

device.

5,6

SW

Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI.

8

CTRL

Multi-function On/Off and brightness control pin:



Leave floating for normal operation.



Drive to voltage below 0.3V to turn off output current



Drive with DC voltage (0.4V < VSET< 2.5V) to adjust output current from 10% to 100% of





A PWM signal (Low level <0.3V, High level >2.6V, transition times less than 1us) allows the

output current to be adjusted over a wide range up to 100%



Connect a capacitor from this pin to ground to increase soft-start time.

(Default soft-start time = 0.1ms. Additional soft-start time is approx. 1.5ms/1nF)

EP

EP

Exposed pad/TAB connects to GND and thermal mass for enhanced thermal impedance.