Overview
The LMR14030QDPRRQ1, manufactured by Texas Instruments, is a 40V, 3.5A step-down (buck) voltage regulator with an integrated high-side MOSFET. Designed for a wide input voltage range of 4V to 40V, it is suitable for a variety of applications, including industrial and automotive systems. This device is particularly advantageous for battery-powered systems due to its low quiescent current of 40 µA in sleep mode and an ultra-low shutdown current of 1 µA. Its adjustable switching frequency allows for optimization of efficiency or external component size, while internal loop compensation simplifies design and minimizes external components. The LMR14030QDPRRQ1 is available in 8-pin HSOIC or 10-pin WSON packages with an exposed pad for enhanced thermal performance.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Voltage Range | 4 to 40 | V | |
| Output Current | 3.5 | A | |
| Quiescent Current (Sleep Mode) | 40 | µA | |
| Shutdown Current | 1 | µA | |
| Switching Frequency Range | Adjustable | kHz to MHz | Optimizes efficiency or component size |
| Package | 8-pin HSOIC, 10-pin WSON | Exposed pad for thermal performance | |
| Protection Features | Cycle-by-cycle current limit, thermal shutdown, output overvoltage |
Key Features
- Wide input voltage range of 4V to 40V for versatile applications.
- Integrated high-side MOSFET simplifies design and reduces component count.
- Low quiescent current of 40 µA in sleep mode, ideal for battery-powered systems.
- Ultra-low shutdown current of 1 µA extends battery life.
- Adjustable switching frequency for efficiency or component size optimization.
- Internal loop compensation reduces design complexity and external components.
- Built-in protection features including cycle-by-cycle current limit, thermal shutdown, and output overvoltage protection.
Applications
The LMR14030QDPRRQ1 is widely used in industrial and automotive applications where reliable power regulation is required. Its wide input voltage range makes it suitable for systems powered by unregulated sources, such as battery packs or automotive power supplies. In industrial settings, it can be used in automation systems, control units, and sensors. In automotive applications, it is ideal for infotainment systems, advanced driver-assistance systems (ADAS), and lighting controls. Its low power consumption and high efficiency also make it a strong candidate for portable and battery-operated devices.
Q & A
1. What is the input voltage range of the LMR14030QDPRRQ1?
The input voltage range is 4V to 40V.
2. What is the maximum output current supported?
The maximum output current is 3.5A.
3. How does the LMR14030QDPRRQ1 optimize efficiency?
It features an adjustable switching frequency that allows users to optimize efficiency or external component size.
4. What are the key protection features of this device?
It includes cycle-by-cycle current limit, thermal shutdown, and output overvoltage protection.
5. What is the quiescent current in sleep mode?
The quiescent current is 40 µA.
6. What is the shutdown current of the LMR14030QDPRRQ1?
The shutdown current is 1 µA.
7. What package options are available?
It is available in 8-pin HSOIC or 10-pin WSON packages with an exposed pad.
8. Is this device suitable for automotive applications?
Yes, it is designed for automotive and industrial applications.
9. Does the LMR14030QDPRRQ1 require external loop compensation?
No, it features internal loop compensation, reducing design complexity.
10. What are the typical applications of this device?
Typical applications include industrial automation, automotive systems, and battery-powered devices.
