Overview
The NUD4001DR2, produced by onsemi, is a high current LED driver designed to replace discrete solutions for driving LEDs in low voltage AC-DC applications. This device is particularly useful for applications requiring constant LED current across varying input voltages. It is available in a small surface mount package (SO-8) and is suitable for a wide range of applications, including portables, industrial lighting, and automotive systems.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Continuous Input Voltage | Vin | 30 | V |
| Non-repetitive Peak Input Voltage (t < 1.0 ms) | Vp | 60 | V |
| Output Current (For Vdrop ≤ 2.2 V) | Iout | 500 | mA |
| Output Voltage | Vout | 28 | V |
| Human Body Model (HBM) ESD | ESD | 1000 | V |
| Operating Ambient Temperature | TA | -40 to +125 | °C |
| Maximum Junction Temperature | TJ | 150 | °C |
| Storage Temperature | TSTG | -55 to +150 | °C |
| Total Power Dissipation (Note 2) | PD | 1.13 | W |
| Thermal Resistance, Junction-to-Ambient | RθJA | 110 | °C/W |
| Thermal Resistance, Junction-to-Lead | RθJL | 77 | °C/W |
Key Features
- Supplies constant LED current for varying input voltages.
- External resistor allows the designer to set the drive current up to 500 mA.
- Offered in surface mount package technology (SO-8).
- NSV prefix for automotive and other applications requiring unique site and control change requirements; AEC-Q101 qualified and PPAP capable.
- Pb-free package is available.
- Maintains a constant light output during battery drain.
- Reduces board space and component count.
- Simplifies circuit and system designs.
Applications
- Portables: For battery back-up applications and simple Ni-CAD battery charging.
- Industrial: Low voltage lighting applications and small appliances.
- Automotive: Tail lights, directional lights, back-up light, dome light.
- Landscape lighting: For driving LEDs in 12 Vac applications.
Q & A
- What is the primary function of the NUD4001DR2?
The NUD4001DR2 is a high current LED driver designed to supply constant LED current for varying input voltages.
- What is the maximum output current of the NUD4001DR2?
The maximum output current is 500 mA.
- How is the drive current set for the NUD4001DR2?
The drive current is set using an external resistor connected between the Rext and Vin pins.
- What are the typical applications of the NUD4001DR2?
Typical applications include portables, industrial lighting, automotive systems, and landscape lighting.
- What is the operating ambient temperature range of the NUD4001DR2?
The operating ambient temperature range is -40°C to +125°C.
- Is the NUD4001DR2 Pb-free?
- What is the thermal resistance, junction-to-ambient, of the NUD4001DR2?
The thermal resistance, junction-to-ambient, is 110°C/W.
- How does the NUD4001DR2 simplify circuit and system designs?
The NUD4001DR2 simplifies circuit and system designs by reducing board space and component count, and by maintaining constant light output during battery drain.
- What is the maximum junction temperature of the NUD4001DR2?
The maximum junction temperature is 150°C.
- Is the NUD4001DR2 AEC-Q101 qualified?
