SC4538 converter equivalent, high effi ciency boost converter.
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 dimmin.
where small size and high efficiency are priorities. This device integrates an 800kHz current-mode PWM boost converter a.
The SC4538 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 programmabl.
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