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The BCR430U is a monolithically integrated linear LED controller designed to function as a Constant Current Regulator (CCR) for linear LED driving. The device operates over a voltage range from 5V to 42V and regulates the output LED current up to 100mA, set by an external resistor. It is designed for driving LEDs in strings and will reduce current at increasing temperatures to self-protect. The low voltage drop during current regulation allows efficient driving of LED strings with a range of forward voltages and supply voltage tolerances.


  • LED Strips
  • LED Panel Displays
  • Architectural and Landscape Lighting
  • Mood and Decorative Lighting
  • Retail Lighting


  • LED Current Tolerance of ±5% at 95mA Output Current
  • Thermal Protection Reduces LED Current at Elevated Temperature
  • Low Typical Saturation Voltage of 115mV at 50mA
  • 5mA to 100mA Adjustable LED Current with an External Resistor
  • 5V to 42V Supply Voltage
  • High Power 1W Dissipation in SOT26
  • No External Capacitors Required for Stable Operation
  • LED Dimming Using PWM
  • Parallel Devices to Increase Regulated Current
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q101, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Product Specifications

Product Parameters

Qualified to AECQ10x No
Compliance (Only Automotive supports PPAP) Standard
Topology Linear LED Driver
Minimum Supply Voltage 5 V
Maximum Supply Voltage 42 V
Maximum VOUT 40 V
Number of Channels 1
LED Current Sense Voltage 892 mV
Output Current 100 mA
Channel Max. Output Current (mA) 5mA to 100mA
Accuracy 5 %
Dimming PWM dimming by REXT pin
Temperature Range -55 to 150 °C

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Application Notes


Recommended Soldering Techniques



Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 76949 3/4/2021 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 114920 3/4/2021 South America, North America, Asia, Europe, Middle East Buy Now
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