LC5710S is a power IC for LED drivers, which incorporates a power MOSFET and a controller IC in a SOP8 package. This product features a wide input voltage range of 5V to 58V, 100kHz to 500kHz operation frequency, and Buck / Boost / Buck-Boost converters can be applied with external circuit configuration. LED string current can be set with the external resistor, and LED dimming can be controlled by the digital input signal or DC-bias. The rich set of protection features helps to realize low component counts, and high performance-to-cost power supply.

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    ・Supports Buck / Boost / Buck-Boost converters
    ・Fosc=100kHz~500kHz (variable)
    ・VCS : 100mV±3%
    ・High efficiency: η > Typ.90%
    ・PWM dimming frequency: 20kHz(Max)
    ・Protection functions
      OCP: Pulse-by-pulse basis
      OVP/TSD: Auto restart


    ・ DC input LED Lighting
    ・ Indoor / Outdoor LED Lighting
    ・ LED Spotlight
    ・ RGB LED Lighting


Circuit Type Buck-Boost
Isolated / Non-Isolated Non-Isolated
MOSFET Breakdown Voltage 60.00
On-Resistance 0.55 Ω
Output Current 1.0A A
OCP Pulse by pulse
OLP Latch / Auto Restart
OVP Auto Restart
LED Open / Short Protection YES
Dimming Function Analog

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

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