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SY22121POC (SY7726POC)

Production
High Efficiency 2-string LED Driver For Smart Phone
Datasheet
SY22121POC High Efficiency 2-string LED Driver For Smart Phone Datasheet
Part number SY22121POC
Description 2 string LED driver for smart phone with 40V 1A MOS, VLED<40V
Channel(#) 2
Topology Boost + current sink
Dimming mode PWM Dimming
Fsw(kHz) 1000
Vin (min) (V) 2.7
Vin (max) (V) 28
Iout (max) (A) 0.03
Package CSP1.31×1.31-9
Application Phone/PAD backlight
  • Wide Input Range: 2.7V~28V 
  • Drive Up to 10 LEDs per String
  • Integrated 40V Power MOSFET 
  • Integrated 2 Channel Current Source of Up to 30mA Each
  • 1% Typical Current Matching Accuracy
  • Low LED Regulated Voltage (150mV typical)
  • High Frequency Boost Converter (1MHz) 
  • Internal Compensation and Soft-start 
  • Analog PWM Dimming with 500ns min. ON Time 
  • Enable and 1-wire Digital Dimming 
  • Up to 100:1 PWM Dimming Ratio (20kHz Dimming Frequency)  
  • Cycle-by-cycle Inductor Current Limit
  • LED Open/Short Protection, Output Over-voltage Protection 
  • Thermal Shutdown Protection
  • Low Quiescent Current and Low Shutdown Current 
  • Pb-free Package: CSP 1.31×1.31 -9

Evaluation Board

  • 2022-02-09_155506

    Photo of evaluation board

  • 2022-02-09_155456

    Photo of evaluation board

  • 2022-02-09_155516

    Photo of evaluation board

EVB_SY22121POC

The EVB_SY22121POC is intended for evaluating High Efficiency 2-string LED Driver For Smart Phone

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12