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MIC2842A Datasheet (PDF) - Micrel Semiconductor

MIC2842A Datasheet PDF - Micrel Semiconductor
No. de pieza MIC2842A
Descarga  MIC2842A Descarga

Tamaño del archivo   862.18 Kbytes
Page   14 Pages
Fabricante Electrónico  MICREL [Micrel Semiconductor]
Página de inicio  http://www.micrel.com
Logo MICREL - Micrel Semiconductor
Descripción Electrónicos High Efficiency 4 Channel WLED Driver with DAM??and Single Wire Digital Control

MIC2842A Datasheet (PDF)

Go To PDF Page Descarga Datasheet
MIC2842A Datasheet PDF - Micrel Semiconductor

No. de pieza MIC2842A
Descarga  MIC2842A Click to download

Tamaño del archivo   862.18 Kbytes
Page   14 Pages
Fabricante Electrónico  MICREL [Micrel Semiconductor]
Página de inicio  http://www.micrel.com
Logo MICREL - Micrel Semiconductor
Descripción Electrónicos High Efficiency 4 Channel WLED Driver with DAM??and Single Wire Digital Control

MIC2842A Datasheet (HTML) - Micrel Semiconductor

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MIC2842A Detalles de producto

General Description
The MIC2842A is a high efficiency White LED (WLED) driver designed to drive up to four LEDs and greatly extend battery life for portable display backlighting, and keypad backlighting in mobile devices. The MIC2842A architecture provides the highest possible efficiency by eliminating switching losses present in traditional charge pumps or inductive boost circuits. With a typical dropout of 40mV at 20mA, the MIC2842A allows the LEDs to be driven directly from the battery eliminating switching noise and losses present with the use of boost circuitry.

Features
• High Efficiency (no Voltage Boost losses)
• Dynamic Average Matching™ (DAM™)
• Single wire digital control
• Input voltage range: 3.0V to 5.5V
• Dropout of 40mV at 20mA
• Matching better than ±1.5% (typical)
• Current accuracy better than ±1.5% (typical)
• Maintains proper regulation regardless of how many
   channels are utilized
• Available in a 10-pin 2mm x 2mm Thin MLF® package

Applications
• Mobile handsets
• Handset LCD backlighting
• Handset keypad backlighting
• Camera flash (see MIC2843A datasheet)
• Digital cameras
• Portable media/MP3 players
• Portable navigation devices (GPS)
• Portable application




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