Overview
The LMR14030SQDDARQ1 is a high-performance, automotive-grade DC-DC switching regulator produced by Texas Instruments. Designed for a wide range of applications, this device integrates a high-side MOSFET and operates with an input voltage range of 4V to 40V, making it suitable for industrial and automotive systems. Its key features include low quiescent current in sleep mode, adjustable switching frequency, and built-in protection mechanisms, ensuring reliability and efficiency in demanding environments.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Voltage Range | 4 - 40 | V | |
| Output Voltage Range | 0.8 - 28 | V | Adjustable |
| Output Current | 3.5 | A | |
| Switching Frequency | 200k - 2.5M | Hz | Adjustable |
| Quiescent Current (Sleep Mode) | 40 | µA | |
| Operating Temperature Range | -40 to 125 | °C | |
| Package | 8-PowerSOIC, 10-WSON | Exposed Pad for Thermal Performance | |
| Protection Features | Cycle-by-Cycle Current Limit, Thermal Shutdown, Output Overvoltage Protection |
Key Features
- Integrated high-side MOSFET for compact design.
- Wide input voltage range (4V to 40V) for versatile applications.
- Adjustable switching frequency (200kHz to 2.5MHz) for efficiency optimization.
- Low quiescent current (40µA) in sleep mode for battery-powered systems.
- Built-in protection features including cycle-by-cycle current limit and thermal shutdown.
- Internal loop compensation simplifies design and reduces external components.
Applications
The LMR14030SQDDARQ1 is ideal for a variety of applications, including automotive electronics, industrial automation, and battery-powered systems. Its robust design and wide input voltage range make it suitable for power regulation from unregulated sources. Specific use cases include power supplies for infotainment systems, advanced driver-assistance systems (ADAS), and industrial control systems. Its low power consumption and protection features ensure reliable operation in harsh environments.
Q & A
1. What is the input voltage range of the LMR14030SQDDARQ1?
The input voltage range is 4V to 40V.
2. What is the maximum output current it can handle?
The maximum output current is 3.5A.
3. Is the switching frequency adjustable?
Yes, the switching frequency is adjustable from 200kHz to 2.5MHz.
4. What protection features are included?
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 in sleep mode is 40µA.
6. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
7. What package options are available?
It is available in 8-PowerSOIC and 10-WSON packages with exposed pads for thermal performance.
8. Is this device suitable for automotive applications?
Yes, it is automotive-grade and meets AEC-Q100 standards.
9. Can it be used in battery-powered systems?
Yes, its low quiescent current makes it ideal for battery-powered systems.
10. Does it require external loop compensation?
No, it features internal loop compensation, simplifying the design.
