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LC5525F

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Package:TO220F-7L

The LC5520 series is the power IC for non-isolated LED driver applications with commercial power supply. It provides constant output current control for driving LEDs. The buck or buck-boost topology is selectable by peripheral circuit structure.
It includes various functions, and this design allows the achievement of highly cost-effective LED lighting power supply systems by reducing external component count and minimizing PCB area.

Design Support

Related Documents

■Application Note
■Other

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Features

    ・Isolated type
    ・Built-in ON time control circuit
    ・Built-in soft start circuit
    ・Built-in bias assist function
    ・Built-in leading edge blanking function
    ・Built-in maximum ON time control circuit
    ・Protection functions
    Overcurrent protection (OCP): Pulse by pulse
    Overvoltage protection (OVP): Auto restart (VCC, OCP. OVP pin)
    Overload protection (OLP): Auto restart
    Thermal shutdown (TSD): Latch shutdown

Application

    ・LED lighting equipment
    ・LED lights bulbs

Specifications

Type
Circuit Type Flyback
Isolated / Non-Isolated Isolated
MOSFET Breakdown Voltage 650 V
On-Resistance 1.10 Ω
Output Power / Output current 55W
OCP Pulse by pulse
OLP Auto Restart
OVP Auto Restart
LED Open / Short Protection NO
Dimming Function PWM
Package Weight (Typ.) g

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

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