Overview
The NSI50350AST3G is a constant current regulator (CCR) and LED driver produced by onsemi. This device is designed to provide a cost-effective solution for regulating current in LEDs, leveraging Self-Biased Transistor (SBT) technology. It is robust, economical, and simple to use, requiring no external components. The CCR is capable of regulating current over a wide voltage range and features a negative temperature coefficient to protect LEDs from thermal runaway. It is suitable for various applications, including automotive, industrial, and commercial signage.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Anode-Cathode Voltage | Vak | 50 | V | ||
| Reverse Voltage | VR | 500 mV | |||
| Operating and Storage Junction Temperature Range | TJ, Tstg | -55 | 175 | °C | |
| Steady State Current @ Vak = 7.5 V | Ireg(SS) | 315 | 350 | 385 | mA |
| Voltage Overhead @ 70% Ireg(SS) | Voverhead | 1.8 | V | ||
| Pulse Current @ Vak = 7.5 V | Ireg(P) | 405.5 | 460 | 516.5 | mA |
| Thermal Resistance, Junction-to-Ambient | RθJA | 48.2 | °C/W | ||
| ESD Rating: Human Body Model | 8000 V | ||||
| ESD Rating: Machine Model | 400 V |
Key Features
- Robust Power Package: Capable of handling up to 5.8 W of power.
- Wide Operating Voltage Range: Supports a wide voltage range, making it versatile for various applications.
- Immediate Turn-On: Turns on immediately and reaches 20% of regulation with only 0.5 V across it.
- Voltage Surge Suppressing: Protects LEDs from voltage surges.
- UL94-V0 Certified: Meets UL94-V0 certification standards for safety.
- SBT (Self-Biased Transistor) Technology: Utilizes SBT technology for efficient current regulation.
- Negative Temperature Coefficient: Reduces current as temperature rises to protect LEDs from thermal runaway.
- AEC-Q101 Qualified and PPAP Capable: Qualified to automotive standards and capable of Production Part Approval Process (PPAP).
- Pb-Free, Halogen Free/BFR Free, and RoHS Compliant: Environmentally friendly and compliant with regulatory standards.
Applications
- Automotive: Suitable for applications such as chevron side mirror markers, cluster, display & instrument backlighting, CHMSL, and map lights.
- AC Lighting Panels and Display Signage: Used in decorative lighting, channel lettering, and other signage applications.
- Industrial and Commercial Lighting: Ideal for various industrial and commercial lighting needs.
- LED Strings: Can be used in series with LEDs as a high or low-side driver, and multiple devices can be connected in parallel for higher current requirements.
- Dimming Applications: Supports dimming using PWM (Pulse Width Modulation) with appropriate frequency and duty cycle settings.
Q & A
- What is the maximum anode-cathode voltage for the NSI50350AST3G?
The maximum anode-cathode voltage is 50 V.
- What is the typical steady-state current at 7.5 V?
The typical steady-state current at 7.5 V is 350 mA.
- Does the NSI50350AST3G require external components?
No, it does not require any external components.
- What is the thermal resistance, junction-to-ambient, for the NSI50350AST3G?
The thermal resistance, junction-to-ambient, is 48.2 °C/W.
- Is the NSI50350AST3G UL94-V0 certified?
- Can the NSI50350AST3G be used in automotive applications?
- How does the NSI50350AST3G protect LEDs from thermal runaway?
- Can multiple NSI50350AST3G devices be connected in parallel?
- Is the NSI50350AST3G RoHS compliant?
- How can the NSI50350AST3G be used for dimming applications?
