AL8812

Document number: DS37099 Rev. 1 - 2

1 of 11

www.diodes.com

March 2014

© Diodes Incorporated

AL8812

BOOST/BUCK DC-DC CONVERTER FOR DIMMABLE MR16 LED LAMPS

Description

The AL8812 is a monolithic control circuit containing the primary

functions required for DC-to-DC converters with MOSFET in one

package. These devices consist of an internal temperature

compensated reference, comparator, controlled duty cycle oscillator

with an active current limit circuit, driver and high current output

switch. Additionally a 60V, 3.6A MOSFET is integrated for reduced

BOM cost and size. This series is specifically designed for buck and

boost applications with a minimum number of external components.

Features

•

Operation from 3.0V to 20V Input

•

Integrated 60V, 3.6A MOSFET

•

Low Standby Current

•

Current Limiting

•

Output Voltage Adjustable

•

Frequency Operation to 100 kHz

•

Precision 2% Reference

•

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

•

Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

Applications

• Low Voltage LED Lighting such as MR-16

• General Purpose DC-DC Converter

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

Dimmable MR-16 LED Driver System Diagram

(For detailed schematic please contact your Diodes Sales Representative)

NC

GATE

INPUT

VCC

SENSE

DRIVE

SW/C

SW/E

GND

TIMING

SOURCE

DRAIN

U-DFN6040-12

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