Linear low-voltage drop LED driver IC

Long term reliability and longevity of LEDs are key. BCR430U is the best choice when you need to drive low power LED strings and strips supplied by a DC voltage source and at the same time requesting more flexibility in voltage headroom.

BCR430U is a linear LED controller IC in a small SOT23-6 package regulating the LED current in standalone operation without the need of any external power transistor. It is suitable for driving currents from 5 to 100mA and the IC supply voltage range is from 6V up to 42V. The LED current level can be adjusted connecting a high ohmic resistor Rset to pin RS.

Summary of features:

  • Supply voltage from 6 to 42V
  • Controls up to 100mA LED current
  • Typ. 135mV saturation voltage at 50mA
  • LED current precision ±5%
  • Smart over temperature protection

Target applications:

  • LED strips
  • Architectural LED lighting
  • LED displays and channel letters
  • Emergency lighting
  • Retail lighting
  • White good lighting

Typical application diagram 24V LED driver

LED strips can be driven by just one BCR430U offering ultra low voltage drop! The 400mV headroom easily enables a 4th LED, while the supply voltages do not need to be changed.

Parametrics BCR430U
Dimming PWM dimming by RS pin
Iout   max 5.0 mA 100.0 mA
Ptot   max 600.0 mW
Packaging 3k reel
Qualification Industrial
Type Linear
VS   min  max 6.0 V   42.0 V
Vdrop 0.135 V

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