Overview
The NUD4001DR2G, 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 available.
- Maintains 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: Can be used in 12 Vac landscape lighting applications to drive multiple LEDs.
Q & A
- What is the primary function of the NUD4001DR2G?
The NUD4001DR2G is a high current LED driver designed to supply constant LED current for varying input voltages.
- What is the maximum output current of the NUD4001DR2G?
The maximum output current is 500 mA.
- How is the drive current set for the NUD4001DR2G?
The drive current is set using an external resistor connected between the Rext and Vin pins.
- What are the operating temperature ranges for the NUD4001DR2G?
The operating ambient temperature range is -40°C to +125°C, and the maximum junction temperature is 150°C.
- Is the NUD4001DR2G suitable for automotive applications?
Yes, it is suitable for automotive applications and is AEC-Q101 qualified and PPAP capable.
- What package type is the NUD4001DR2G available in?
The device is available in a surface mount package (SO-8).
- How does the NUD4001DR2G reduce system cost and board space?
It reduces system cost and board space by integrating multiple components into a single package.
- What is the total power dissipation of the NUD4001DR2G?
The total power dissipation is 1.13 W, with derating above 25°C as specified in the datasheet.
- Can the NUD4001DR2G be used in landscape lighting applications?
Yes, it can be used in 12 Vac landscape lighting applications to drive multiple LEDs.
- How does the NUD4001DR2G maintain constant light output during battery drain?
It maintains constant light output by regulating the LED current despite changes in the input voltage.
