LC5910S |Sanken Electric

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LC5910S

Data sheetdownload (PDF:682.13KB)
Application Note

Description

LC5910S is a buck single-output LED driver IC that achieves the LED drive with few components, high efficiency, and high accuracy. The IC has various protections and configures various LED circuits. The PWM dimming and the three-level dimming (the reference voltage selection function for LED current limiting) are available.

Application

● LED Back Light
● LED Lighting Equipment
● LED Bulbs

Features

Converter Parts
● Critical Current Mode (CRM) Control
   (Low switching loss, low noise, reduction in the number
   of components)
● Enable Function
● Bottom Detection Voltage 100 mV (typ.)

LED Control Parts
● PWM Dimming Function
● Reference Voltage Selection Function for LED
   Current Limitting (three levels, 75% to 100%)
● Current Reference Accuracy: ±1%

Protections
● LED Output Short Circuit Protection: Pulse-by-pulse
● Current Detection Short Circuit Protection: Autorestart
● Input Voltage Drop Protection: Auto-restart
● Overvoltage Protection (OVP): Auto-restart, fault output
● Thermal Shutdown (TSD) with Hysteresis: Autorestart

Remarks

Package

Package Name:SOP8

Package Diagram

Design Support

Calculation Tool for LC5910S : Click here

Specifications

Maximum Input Voltage17V
Output CurrentProgrammable by add-on parts
FrequencySelf-oscillation
OCPYES
OLPNone
OVPAuto Restart
LED Open / Short ProtectionYES
Dimming FunctionAnalog / PWM
TSDAuto Restart

Representative Circuit

Internal Block Diagram

Pin-out Diagrams

Data sheetdownload (PDF:682.13KB)
Application Note
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