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SC440A - High Efficiency Integrated Driver

Description

The SC440A is a high-efficiency multiple string WLED driver with an integrated boost converter.

It operates over a wide input range from 4.5V to 21V with a maximum output voltage of 42V and a 2A internal power switch.

Features

  • a comprehensive open and short circuit LED protection functions. It disables the corresponding strings with LED open or LED short conditions while keeping other strings under normal operation. This feature allows LCD panels to remain viewable even under LED failure, wire disconnect, or shortcircuit conditions. The short LED protection function can be disabled. The internal thermal shutdown protects the IC from overheating at abnormal conditions. The SC440A is available in a common 4mm x 4mm x1mm.

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Datasheet preview – SC440A

Datasheet Details

Part number SC440A
Manufacturer Semtech Corporation
File Size 84.91 KB
Description High Efficiency Integrated Driver
Datasheet download datasheet SC440A Datasheet
Additional preview pages of the SC440A datasheet.

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Full PDF Text Transcription

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SC440A www.DataSheet4U.com High Efficiency Integrated Driver for 6-Strings of 30mA LEDs Description The SC440A is a high-efficiency multiple string WLED driver with an integrated boost converter. It operates over a wide input range from 4.5V to 21V with a maximum output voltage of 42V and a 2A internal power switch. It can drive up to 42V output voltage in 6 strings with current up to 30mA per string. The string-to-string current matching is 1% typical, 3% maximum and the overall efficiency is greater than 90% due to the low current sense voltage and a low-impedance internal power switch. The wide PWM dimming range boasts a ratio of 500: 1. The 800kHz switching frequency enables the user to optimize the external component sizes for high efficiency.
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