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AL8811

Document number: DS36090 Rev. 2 - 2

1 of 11

www.diodes.com

June 2013

L8811

Boost/Buck/Inverting DC-DC CONVERTER

Description

The AL8811 is a monolithic control circuit containing the primary

functions required for DC-to-DC converters. 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. This series is specifically designed for

incorporating in Boost, Buck and voltage-inverting applications with a

minimum number of external components.

Features

 Operation from 3.0V to 20V Input

 Low Standby Current

 Current Limiting

 Output Switch Current to 1.6A

 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

MSOP-8

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 Application Diagram

Electronic Transformer compatible MR16 lamp Simplified Schematic

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Podsumowanie treści

Strona 1 - © Diodes Incorporated

AL8811 Document number: DS36090 Rev. 2 - 2 1 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811Boost/Buck/Inverting DC-DC CONVERTER Descri

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AL8811 Document number: DS36090 Rev. 2 - 2 10 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Ordering Information Part Number Packa

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AL8811 Document number: DS36090 Rev. 2 - 2 11 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Suggested Pad Layout Please see AP02001 a

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AL8811 Document number: DS36090 Rev. 2 - 2 2 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Pin Descriptions Pin Name Pin Number Desc

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AL8811 Document number: DS36090 Rev. 2 - 2 3 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Absolute Maximum Ratings (@TA = +25°C, unle

Strona 6 - Application Circuit (cont.)

AL8811 Document number: DS36090 Rev. 2 - 2 4 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Typical Performance Characteristics Fig

Strona 7

AL8811 Document number: DS36090 Rev. 2 - 2 5 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Application Circuit (1) Boost Converter

Strona 8

AL8811 Document number: DS36090 Rev. 2 - 2 6 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Application Circuit (cont.) (2) Electron

Strona 9

AL8811 Document number: DS36090 Rev. 2 - 2 7 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Application Circuit (cont.) Buck LED Driver

Strona 10 - Detail C

AL8811 Document number: DS36090 Rev. 2 - 2 8 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Application Circuit (cont.) (3) Buck Conv

Strona 11

AL8811 Document number: DS36090 Rev. 2 - 2 9 of 11 www.diodes.com June 2013© Diodes Incorporated AL8811 Application Circuit (cont.) (4) Voltage

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