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24V low power LED strings and strips driven by ultra low drop voltage LED driver BCR430U

Open online SPICE simulator circuit link: lighting_led_24V_BCR430U_application_circuit.tsc

Typical Application Circuit for BCR430U
Ultra Low Drop Voltage LED Driver IC

BCR430U is a linear LED controller IC in a small PG-SOT23-6 package
regulating the LED current in standalone operation without any external
power transistor.

Ultra low voltage drop at the integrated LED driver stage
Supply voltage from 6 V to 42 V
LED current adjustable up to 100 mA
Easy current setting with resistor Rset to pin RS
Smart over temperature protection

Set your application parameters in the green setting window on the left of the
circuit and simulate to check the performance.

{1. click here to set circuit parameters}
{2. click on "Run" to calculate components}
{3. click on "OK" and Simulate Transient }

{Supply voltage [V]}
{Adapt LEDs to ensure low drop voltage}
Vs:= 24 {use 6 ... 42}

{Set brightness with Rset [Ohm]}
Rset:= 6k {use 6k ... 30k}

{Set ambient temperature}
Tamb:= 25 {use -25 ... 125}

{Set thermal model}
Thermal_Model:=2 {use 1 ... 3}
{Thermal_Model=1: RthJA,1s0p,0 = 288 K/W}
{Thermal_Model=2: RthJA,1s0p,300 = 182 K/W}
{Thermal_Model=3: RthJA,2s2p = 190 K/W}

Technical Assistance Center

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\a(Product info: BCR430U,
\a(Evaluation board: BCR430U LED BOARD,
\a(DC-DC LED Driver IC and Linear Control Solutions,
\a(Application: LED lighting,
\a(LEDs: Osram LRTB-G6SF,
\a(Other circuits