Overview
The NSV45035JZT1G is an adjustable 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, similar to a Constant Current Diode (CCD). It is based on Self-Biased Transistor (SBT) technology, which allows it to regulate current over a wide voltage range. The NSV45035JZT1G is qualified to the stringent AEC-Q101 standard, making it suitable for automotive, industrial, and commercial signage applications. It is lead-free, RoHS compliant, and uses halogen-free molding compound, ensuring environmental and safety standards are met.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Anode-Cathode Voltage | Vak | 45 | V | ||
| Reverse Voltage | VR | 500 mV | |||
| Steady State Current @ Vak = 7.5 V | Ireg(SS) | 29.75 | 35 | 40.25 | mA |
| Voltage Overhead | Voverhead | 1.8 | V | ||
| Pulse Current @ Vak = 7.5 V | Ireg(P) | 30.9 | 42.5 | mA | |
| Operating and Storage Junction Temperature Range | TJ, Tstg | -55 | 150 | °C | |
| Thermal Resistance, Junction-to-Ambient | RθJA | 124 | °C/W |
Key Features
- Robust Power Package: 1.5 Watts, ensuring high power handling capabilities.
- Adjustable Current: Up to 70 mA, allowing for flexible current regulation.
- 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 common in automotive, industrial, and commercial signage applications.
- AEC-Q101 Qualified and PPAP Capable: Meets stringent automotive standards and is PPAP capable.
- UL94-V0 Certified: Ensures high safety standards with UL94-V0 certification.
- SBT (Self-Biased Transistor) Technology: Provides reliable current regulation.
- Negative Temperature Coefficient: Protects LEDs by reducing current as temperature rises.
- No External Components Required: Can be designed as a high or low-side regulator without additional components.
Applications
- Automotive: Chevron side mirror markers, cluster, display & instrument backlighting, CHMSL, map light.
- AC Lighting Panels: Display signage, decorative lighting, channel lettering.
- Switch Contact Wetting: Used in applications requiring switch contact wetting.
- LED Strings: Can be placed in series with LEDs as a high side or low side driver.
- Dimming Applications: Supports dimming using Pulse Width Modulation (PWM).
Q & A
- What is the maximum anode-cathode voltage for the NSV45035JZT1G?
The maximum anode-cathode voltage is 45 V.
- What is the typical steady state current at 7.5 V?
The typical steady state current at 7.5 V is 35 mA.
- Is the NSV45035JZT1G RoHS compliant?
Yes, the NSV45035JZT1G is lead-free, RoHS compliant, and uses halogen-free molding compound.
- What is the thermal resistance, junction-to-ambient for the NSV45035JZT1G?
The thermal resistance, junction-to-ambient is 124 °C/W.
- Can the NSV45035JZT1G be used in AC applications?
Yes, it can be used with full wave rectified AC as shown in application notes AND8433/D and AND8492/D.
- How does the NSV45035JZT1G protect LEDs from thermal runaway?
The device has a negative temperature coefficient, which reduces the current as temperature rises, protecting LEDs from thermal runaway.
- Can the current be adjusted in the NSV45035JZT1G?
Yes, the current can be adjusted by attaching a resistor between the Radj pin and the cathode.
- What is the operating and storage junction temperature range for the NSV45035JZT1G?
The operating and storage junction temperature range is -55°C to 150°C.
- Is the NSV45035JZT1G suitable for automotive applications?
Yes, it is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications.
- How is dimming achieved with the NSV45035JZT1G?
Dimming can be achieved by using Pulse Width Modulation (PWM) by placing a BJT in series with the CCR.
