Overview
The LM3429MH/NOPB is a high-voltage N-channel MOSFET controller designed for LED driver applications, manufactured by Texas Instruments. This IC is part of the PMIC - LED Driver category and is widely used in various lighting applications due to its flexibility and high performance. It supports multiple topologies, including SEPIC, buck, boost, and buck-boost, making it suitable for a broad range of LED lighting designs. With an input voltage range of 4.5V to 75V and a switching frequency of up to 2MHz, the LM3429MH/NOPB is ideal for high-efficiency LED drivers in industrial, automotive, and consumer electronics applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Brand | Texas Instruments | - | - |
| Model | LM3429MH/NOPB | - | - |
| Package | HTSSOP14 | - | - |
| Category | PMIC - LED Driver | - | - |
| Topology | SEPIC, Buck, Boost | - | - |
| Internal Switch | None | - | - |
| Outputs | 1 | - | - |
| Supply Voltage (Min) | 4.5 | V | - |
| Supply Voltage (Max) | 75 | V | - |
| Frequency | 2 | MHz | - |
| Dimming | Analog, PWM | - | - |
| Operating Temperature | -40 to 125 | °C | TJ |
| Mounting Type | Surface Mount | - | - |
| Package/Case | 14-TSSOP | - | Exposed Pad |
Key Features
- Supports multiple topologies: SEPIC, buck, boost, and buck-boost.
- Wide input voltage range (4.5V to 75V) for versatile applications.
- High switching frequency up to 2MHz for compact designs.
- Integrated predictive off-time (PRO) control for simplified loop compensation.
- Analog and PWM dimming capabilities for precise LED current control.
- Built-in protection features: overvoltage, undervoltage lockout, cycle-by-cycle current limit, and thermal shutdown.
Applications
The LM3429MH/NOPB is widely used in LED lighting applications across various industries. Its high efficiency and flexibility make it suitable for industrial lighting, automotive lighting systems, and consumer electronics. In industrial settings, it is used for high-power LED drivers in factory and warehouse lighting. In automotive applications, it powers LED headlights, taillights, and interior lighting. In consumer electronics, it is employed in LED backlighting for displays and decorative lighting solutions.
Q & A
1. What is the input voltage range of the LM3429MH/NOPB?
The input voltage range is 4.5V to 75V.
2. What topologies does the LM3429MH/NOPB support?
It supports SEPIC, buck, boost, and buck-boost topologies.
3. What is the maximum switching frequency?
The maximum switching frequency is 2MHz.
4. Does the LM3429MH/NOPB support dimming?
Yes, it supports both analog and PWM dimming.
5. What protection features are included?
It includes overvoltage protection, undervoltage lockout, cycle-by-cycle current limit, and thermal shutdown.
6. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
7. What package does the LM3429MH/NOPB use?
It uses a 14-TSSOP package with an exposed pad.
8. Is the LM3429MH/NOPB suitable for automotive applications?
Yes, it is suitable for automotive LED lighting systems.
9. What is the primary control method used in the LM3429MH/NOPB?
It uses predictive off-time (PRO) control.
10. Can the LM3429MH/NOPB be used in industrial lighting?
Yes, it is ideal for high-power LED drivers in industrial lighting applications.
