Overview
The LMR14050-Q1, produced by Texas Instruments, is a 40V, 5A step-down regulator with an integrated high-side MOSFET. This device is designed for various applications, including industrial and automotive, to condition power from unregulated sources. It features a wide input range from 4V to 40V, making it versatile for different power requirements. The regulator is part of an extended family that includes 2A and 3.5A options in pin-to-pin compatible packages, such as the LMR14020-Q1 and LMR14030-Q1. The ultra-low quiescent current of 40µA in sleep mode and 1µA in shutdown mode makes it suitable for battery-powered systems, enhancing battery life.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4V to 40V |
| Output Current | 5A continuous |
| Quiescent Current | 40µA (sleep mode), 1µA (shutdown mode) |
| High-Side MOSFET Resistance | 90mΩ |
| Switch-On Time | 75ns minimum |
| Switching Frequency Range | 200kHz to 2.5MHz |
| Operating Temperature Range | -40°C to 125°C |
| Package Options | 8-Pin HSOIC with PowerPAD™, 10-Pin WSON with exposed pad |
| ESD Classification | HBM: H1C, CDM: C4A |
Key Features
- Qualified for automotive applications and AEC-Q100 certified
- Wide adjustable switching frequency range (200kHz to 2.5MHz)
- Frequency synchronization to external clock and spread spectrum option for reduced EMI
- Internal compensation for ease of use and minimized external components
- High duty cycle operation supported
- Precision enable input for simplified regulator control and system power sequencing
- External soft start capability
- Thermal, overvoltage, and short protection features
- Ultra-low quiescent current for battery-powered systems
Applications
The LMR14050-Q1 is designed for a variety of applications, including:
- Automotive systems: Suitable for power conditioning in automotive environments due to its AEC-Q100 qualification and wide operating temperature range.
- Industrial systems: Ideal for industrial power supplies requiring a wide input voltage range and high current output.
- Battery-powered systems: The ultra-low quiescent current makes it suitable for battery-powered devices, enhancing battery life.
Q & A
- What is the input voltage range of the LMR14050-Q1?
The input voltage range is from 4V to 40V.
- What is the maximum continuous output current of the LMR14050-Q1?
The maximum continuous output current is 5A.
- What is the quiescent current of the LMR14050-Q1 in sleep mode and shutdown mode?
The quiescent current is 40µA in sleep mode and 1µA in shutdown mode.
- What are the package options available for the LMR14050-Q1?
The device is available in 8-Pin HSOIC with PowerPAD™ and 10-Pin WSON with exposed pad.
- Does the LMR14050-Q1 have built-in protection features?
Yes, it includes thermal, overvoltage, and short protection features.
- Can the switching frequency of the LMR14050-Q1 be adjusted?
Yes, the switching frequency can be adjusted from 200kHz to 2.5MHz.
- Is the LMR14050-Q1 qualified for automotive applications?
Yes, it is qualified for automotive applications and is AEC-Q100 certified.
- What is the operating temperature range of the LMR14050-Q1?
The operating temperature range is from -40°C to 125°C.
- Does the LMR14050-Q1 support frequency synchronization to an external clock?
Yes, it supports frequency synchronization to an external clock and has a spread spectrum option for reduced EMI.
- What is the minimum switch-on time of the LMR14050-Q1?
The minimum switch-on time is 75ns.
