LC5550LD - Single-Stage Power Factor Corrected High Efficiency Non-Isolated Buck LED Driver

Product Overview

SANKEN

Part number	LC5550LD
Manufacturer	Sanken
File Size	368.93 KB
Description	Single-Stage Power Factor Corrected High Efficiency Non-Isolated Buck LED Driver
Datasheet	LC5550LD Datasheet
Additional preview pages of the LC5550LD datasheet.

LC5550LD series are PWM and quasi-resonant topology non-isolated buck LED driver ICs.

They incorporate separate controller and power MOSFET chips, and are designed for input capacitorless applications.

The controller adapts the average current control method for realizing high power factors.

PWM and quasi-resonant topology.
Integrated on-time control circuit (it realizes high power factor by average current control).
Integrated soft-start circuit (reduces power stress during start-up on the incorporated power MOSFET and output rectifier).
Integrated bias assist circuit (improves startup performance, suppresses VCC voltage droop during operation, and allows use of low-rated ceramic capacitor on VCC pin).
Integrated Leading Edge Blanking (.

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Published: May 8, 2014 |