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STCS2SPR

STCS2SPR

STMicroelectronics
LED Driver IC 1 Output Linear PWM Dimming 2A 10-PowerSO
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Overview

The STCS2SPR is a 2A constant current linear LED driver designed to provide a stable light output across varying supply voltages. It features a wide input range from 4.5V up to 40V and utilizes an external sense resistor to set the precise LED current.

Why Choose This Part

The device offers high-side current sensing and a dedicated PWM pin for precise dimming control without affecting the LED color temperature. It includes built-in protection features such as LED disconnection diagnostics, thermal shutdown, and a very low standby current of 1uA for power-sensitive designs.

Applications

Automotive Lighting
Suitable for interior and exterior car LED lights where high reliability and constant brightness are required despite battery voltage fluctuations.
High-Power LED Modules
Driving high-current LEDs up to 2A in industrial or architectural lighting applications.
Small Appliance Lighting
Integrated lighting for consumer appliances that require simple constant current regulation without the EMI of a switching regulator.
Low Voltage Signage
Constant current supply for LED arrays in signage and display backgrounds powered by 12V or 24V rails.

Key Specifications

Type Linear
Dimming PWM
Mounting Type Surface Mount
Package / Case PowerSO-10 Exposed Bottom Pad
Number of Outputs 1
Internal Switch(s) Yes
Operating Temperature -40degC ~ 150degC (TJ)
Voltage - Supply (Max) 40V
Voltage - Supply (Min) 4.5V
Supplier Device Package 10-PowerSO
Current - Output / Channel 2A

Getting Started

To implement the STCS2SPR, calculate the sense resistor value using the formula R-sense = 100mV / I-led. Ensure the PowerSO-10 package is soldered to a large copper area on the PCB for effective heat dissipation, as this is a linear regulator that must dissipate the voltage drop across the internal pass transistor as heat.

Also Consider

TPS92611-Q1 TITexas Instruments - An automotive-qualified linear LED driver with advanced diagnostics and a smaller footprint for lower current loads.