Overview
The NSIC2050JBT3G is a linear constant current regulator (CCR) designed by onsemi, offering a cost-effective solution for regulating current in LEDs and similar applications. This device is based on Self-Biased Transistor (SBT) technology and is known for its robustness and simplicity. It is capable of regulating current over a wide voltage range and features a negative temperature coefficient to protect LEDs from thermal runaway. The NSIC2050JBT3G is suitable for various applications, including automotive, industrial, and commercial signage, due to its high anode-cathode voltage rating and ability to withstand voltage surges.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Anode-Cathode Voltage | Vak | 120 | V | ||
| Reverse Voltage | VR | 500 mV | |||
| Operating Junction and Storage Temperature Range | TJ, Tstg | -55 | 175 | °C | |
| Steady State Current @ Vak = 7.5 V | Ireg(SS) | 42.5 | 50 | 57.5 | mA |
| Voltage Overhead @ Vak = 7.5 V | Voverhead | 1.8 | V | ||
| Pulse Current @ Vak = 7.5 V | Ireg(P) | 48.1 | 57.4 | 66.7 | mA |
| ESD Rating: Human Body Model | 4000 V | ||||
| ESD Rating: Machine Model | 400 V | ||||
| Thermal Resistance, Junction-to-Ambient | RθJA | 124 °C/W |
Key Features
- Robust Power Package: 2.3 W, designed to handle high peak voltages.
- Wide Operating Voltage Range: Capable of regulating current over a wide voltage range.
- 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 common in AC offline applications.
- UL94-V0 Certified: Meets UL94-V0 flammability standards.
- SBT (Self-Biased Transistor) Technology: Ensures stable current regulation.
- Negative Temperature Coefficient: Reduces current as temperature rises to protect LEDs from thermal runaway.
- AEC-Q101 Qualified and PPAP Capable: Suitable for automotive and other applications requiring unique site and control change requirements.
- Pb-Free, Halogen Free/BFR Free, and RoHS Compliant: Environmentally friendly and compliant with regulatory standards.
Applications
- Automotive: Chevron side mirror markers, cluster displays, instruments backlighting, CHMSL, map light.
- AC Lighting Panels: Display signage, decorative lighting, channel lettering.
- Industrial and Commercial Signage: Various lighting applications requiring constant current regulation.
Q & A
- What is the primary function of the NSIC2050JBT3G?
The NSIC2050JBT3G is a linear constant current regulator (CCR) designed to regulate current in LEDs and similar applications.
- What is the maximum anode-cathode voltage rating of the NSIC2050JBT3G?
The maximum anode-cathode voltage rating is 120 V.
- What is the typical steady-state current of the NSIC2050JBT3G at Vak = 7.5 V?
The typical steady-state current is 50 mA.
- Does the NSIC2050JBT3G require external components for operation?
No, the NSIC2050JBT3G does not require external components for operation.
- What is the significance of the negative temperature coefficient in the NSIC2050JBT3G?
The negative temperature coefficient reduces the current as temperature rises, protecting LEDs from thermal runaway.
- Is the NSIC2050JBT3G suitable for automotive applications?
Yes, it is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications.
- How does the NSIC2050JBT3G handle voltage surges?
The device is designed to suppress voltage surges, protecting LEDs from common surges in AC offline applications.
- What are the thermal considerations for the NSIC2050JBT3G?
The device requires careful thermal management, with total device dissipation and thermal resistance specified in the datasheet.
- Can the NSIC2050JBT3G be used in AC applications?
Yes, it can be used with full-wave rectified AC, as detailed in application notes and design notes provided by onsemi.
- Is the NSIC2050JBT3G environmentally friendly?
Yes, it is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant.
