Overview
The LMR14050-Q1 is a 40V, 5A step-down regulator with an integrated high-side MOSFET, designed by Texas Instruments. This device is suitable for various applications ranging from industrial to automotive, particularly for power conditioning 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 ideal for battery-powered systems, enhancing battery life. The device is available in 8-pin HSOIC and 10-pin WSON packages with exposed pads for low thermal resistance.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4V to 40V |
| Continuous Output Current | 5A |
| Quiescent Current | 40µA (operating), 1µA (shutdown) |
| High-Side MOSFET Resistance | 90mΩ |
| Minimum Switch-On Time | 75ns |
| Switching Frequency Range | 200kHz to 2.5MHz |
| Operating Temperature Range | -40°C to 125°C |
| Package Types | 8-pin HSOIC, 10-pin WSON |
Key Features
- Qualified for automotive applications and AEC-Q100 certified
- Wide input range from 4V to 40V
- Ultra-low quiescent current of 40µA in sleep mode and 1µA in shutdown mode
- Adjustable switching frequency from 200kHz to 2.5MHz
- Frequency synchronization to external clock and spread spectrum option for reduced EMI
- Internal compensation for ease of use
- High duty cycle operation supported
- Precision enable input
- External soft start and thermal, overvoltage, and short protection
Applications
- Automotive battery regulation
- Industrial power supplies
- Telecom and datacom systems
- General purpose wide input voltage regulation
Q & A
- What is the input voltage range of the LMR14050-Q1? The input voltage range is from 4V to 40V.
- What is the continuous output current of the LMR14050-Q1? The continuous output current is 5A.
- What is the quiescent current of the LMR14050-Q1 in sleep and shutdown modes? The quiescent current is 40µA in sleep mode and 1µA in shutdown mode.
- What are the package options for the LMR14050-Q1? The device is available in 8-pin HSOIC and 10-pin WSON packages.
- Is the LMR14050-Q1 qualified for automotive applications? Yes, it is AEC-Q100 qualified.
- 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 have built-in protection features? Yes, it includes thermal, overvoltage, and short protection.
- Can the switching frequency of the LMR14050-Q1 be adjusted? Yes, the switching frequency can be adjusted from 200kHz to 2.5MHz.
- Does the LMR14050-Q1 support frequency synchronization to an external clock? Yes, it supports frequency synchronization to an external clock.
- What is the purpose of the spread spectrum option in the LMR14050-Q1? The spread spectrum option is for reduced EMI.
