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LC5556LD - Single-Stage Power Factor Corrected High Efficiency Non-Isolated Buck LED Driver

This page provides the datasheet information for the LC5556LD, a member of the LC5550LD Single-Stage Power Factor Corrected High Efficiency Non-Isolated Buck LED Driver family.

Description

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.

Features

  • 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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Datasheet preview – LC5556LD

Datasheet Details

Part number LC5556LD
Manufacturer Sanken
File Size 368.93 KB
Description Single-Stage Power Factor Corrected High Efficiency Non-Isolated Buck LED Driver
Datasheet download datasheet LC5556LD Datasheet
Additional preview pages of the LC5556LD datasheet.

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Full PDF Text Transcription

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LC5550LD Series Single-Stage Power Factor Corrected High Efficiency Non-Isolated Buck LED Driver Features and Benefits • 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 (LEB) circuit • Integrated maximum on-time limit circuit • Protection features: ▫ Overcurrent protection (OCP): pulse-by-pulse ▫ Overvoltage protection (OVP): latched shutdown ▫ Overload protection (OLP): latched shutdown
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