AL8807AEV1

Issue 1 – October 2012

www.diodes.com

© Diodes Incorporated 2012

2

AL8807A DEVICE DESCRIPTION

The AL8807A is a continuous mode inductive driver in a SOT25 package, for driving one or more

series-connected LEDs efficiently from a voltage source higher than the LED voltage. The device

includes the output switch and a current sense circuit, which requires an external sense resistor to set

the nominal current up to 1000mA.

AL8807A DEVICE FEATURES

•

Drives one or more series-connected LEDs

•

LEDs up to 1000mA.

•

Internal 36V switch.

•

Wide input voltage: 6V to 36V.

•

Inherent open circuit LED protection.

•

Brightness control using DC.

DEVICE APPLICATIONS

•

LED flashlights.

•

High Power LED driving.

•

Low-voltage halogen replacement LEDs.

•

Automotive lighting.

•

Illuminated signs.

AL8807A Device Packages, Pin and Definitions

SOT25 pack

AL8807A Device Pin Definition

Name

Pin No

Description

SW

1

Drain of NDMOS switch.

GND

2

Ground (0V).

CTRL

3

Internal voltage ref. pin (2.5V) :

•

Leave floating for normal operation.

•

Drive with a DC voltage (0.25V to 2.5V to adjust output current

SET

4

Connect a sense resistor, R1, from the SET pin to VIN to sense the

VIN

5

Input voltage: 6V to 36V. Decouple to ground with a 2.2uF or higher

ceramic capacitor.

ORDERING INFORMATION

EVALBOARD ORDER

NUMBER

AL8807AEV1

Please note: Evaluation boards are subject to

availability and qualified sales leads.

DEVICE ORDER NUMBER

AL8807AW5-7