Overview
The LMR14030SQDDAQ1, manufactured by Texas Instruments, is a high-performance 40V, 3.5A step-down (buck) switching regulator. Designed for a wide range of applications, it integrates a high-side MOSFET and supports an input voltage range of 4V to 40V, making it suitable for industrial, automotive, and battery-powered systems. Its market positioning targets engineers and designers seeking efficient power management solutions with robust protection features and minimal external components.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Voltage Range | 4 to 40 | V | |
| Output Voltage Range | 0.8 to 28 | V | Adjustable |
| Output Current | 3.5 | A | |
| Switching Frequency | 200k to 2.5M | Hz | Adjustable |
| Quiescent Current | 40 | µA | Sleep mode |
| Shutdown Current | 1 | µA | |
| Operating Temperature | -40 to 125 | °C | |
| Package | 8-PowerSOIC | With PowerPad | |
| Protection Features | Overcurrent, Overvoltage, Thermal Shutdown | ||
| Compliance | AEC-Q100 | Automotive Grade |
Key Features
- Integrated high-side MOSFET for simplified design.
- Wide input voltage range (4V to 40V) for versatile applications.
- Adjustable switching frequency (200kHz to 2.5MHz) for efficiency optimization.
- Ultra-low quiescent current (40µA) and shutdown current (1µA) for battery-powered systems.
- Internal loop compensation reduces external component count.
- Precision enable pin for easy power sequencing.
- Built-in protection features including overcurrent, overvoltage, and thermal shutdown.
Applications
The LMR14030SQDDAQ1 is ideal for a variety of applications, including:
- Automotive: Battery voltage regulation, infotainment systems, and lighting.
- Industrial: Power supplies for factory automation and control systems.
- Telecommunications: Power management in base stations and networking equipment.
- Consumer Electronics: Portable devices and battery chargers.
- General Power Regulation: Wide input voltage range makes it suitable for diverse power sources.
Q & A
1. What is the input voltage range of the LMR14030SQDDAQ1?
The input voltage range is 4V to 40V.
2. What is the maximum output current?
The maximum output current is 3.5A.
3. Can the switching frequency be adjusted?
Yes, the switching frequency is adjustable from 200kHz to 2.5MHz.
4. Is this device suitable for automotive applications?
Yes, it is AEC-Q100 compliant, making it suitable for automotive applications.
5. What is the quiescent current in sleep mode?
The quiescent current in sleep mode is 40µA.
6. Does it have built-in protection features?
Yes, it includes overcurrent, overvoltage, and thermal shutdown protection.
7. What package does the LMR14030SQDDAQ1 come in?
It is available in an 8-PowerSOIC package with a PowerPad.
8. Can it be used in battery-powered systems?
Yes, its ultra-low quiescent and shutdown currents make it ideal for battery-powered systems.
9. Is external loop compensation required?
No, it features internal loop compensation, reducing the need for external components.
10. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
