SC4539 Datasheet - Semtech Corporation

SC4539 High Effi ciency Boost Converter

The SC4539 is designed to regulate current for a series chain of white LEDs in LCD backlighting applications where small size and high efficiency are priorities. This device integrates an 800kHz current-mode PWM boost converter and a 30mA programmable low dropout current sink regulator. An external .

SC4539 Features

* Input voltage range

* 2.8V to 5.5V Current-mode PWM control

* 800kHz

* Programmable LED current up to 30mA

* Soft-start to reduce in-rush current

* PWM dimming

* 100Hz to 50kHz

* PWM dimming at ISET

* Analog and filtered

* Over-

SC4539_SemtechCorporation.pdf

SC4539 Datasheet Preview — Preview of SC4539 PDF

Datasheet Details

Part number:

SC4539

Manufacturer:

Semtech Corporation

File Size:

286.07 KB

Description:

High effi ciency boost converter.

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SC4539 SC4539 High Effi ciency Boost Converter Semtech Corporation

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