ONNSI50350AST3G
Overview
The NSI50350AST3G is a 350mA Constant Current Regulator (CCR) designed for linear LED driving applications. It utilizes Self-Biased Transistor (SBT) technology to provide a stable current output over a wide voltage range of up to 50V without the need for external biasing components. The device features a negative temperature coefficient to protect LEDs from thermal runaway during extreme operating conditions.
Why Choose This Part
The component integrates current regulation into a simple two-terminal SMC package, significantly reducing PCB footprint and bill-of-materials cost compared to discrete transistor or switching regulator designs. Its negative temperature coefficient naturally reduces output current as temperature rises, providing inherent thermal protection for the driven LEDs without additional circuitry.
Applications
Key Specifications
Getting Started
To implement this regulator, simply place it in series with the LED string; it can be used on either the high-side or low-side of the load. Ensure the copper area around the SMC package is sufficient to dissipate heat, as power dissipation is calculated as the voltage drop across the device multiplied by the 350mA operating current.
