Overview
The LMR14020-Q1 is a 40V, 2A step-down regulator produced by Texas Instruments. This device is part of the SIMPLE SWITCHER® family and is designed for a wide range of applications, including automotive, industrial, and general-purpose power conditioning from unregulated sources. It features an integrated high-side MOSFET and operates from a supply voltage range of 4V to 40V, delivering up to 2A of continuous output current. The regulator is known for its ultra-low quiescent current of 40µA and high efficiency, making it suitable for battery-powered systems. It also includes internal compensation, reducing the need for external components and simplifying the design process.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4V to 40V | V |
| Output Current | Up to 2A | A |
| Quiescent Current | 40µA | A |
| High-Side MOSFET Resistance | 90mΩ | Ω |
| Switching Frequency Range | 200kHz to 2.5MHz | Hz |
| Operating Temperature Range | –40°C to 125°C | °C |
| Package Options | 8-pin HSOIC, 10-pin WSON | |
| ESD Classification | HBM: H1C, CDM: C4A |
Key Features
- Qualified for automotive applications and AEC-Q100 certified.
- Ultra-low 40µA operating quiescent current and 1µA shutdown current.
- Adjustable switching frequency from 200kHz to 2.5MHz and synchronization to an external clock.
- Spread spectrum option for reduced EMI.
- Fixed 5V output option and internal compensation for ease of use.
- High duty cycle operation supported and precision enable input.
- External soft start and built-in thermal, overvoltage, and short-circuit protection.
- Internal bootstrap voltage regulator for high-side MOSFET gate drive.
- Sleep mode operation at light load currents to improve efficiency.
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 LMR14020-Q1?
The input voltage range is from 4V to 40V.
- What is the maximum output current of the LMR14020-Q1?
The maximum output current is up to 2A.
- What is the quiescent current of the LMR14020-Q1 in sleep mode?
The quiescent current in sleep mode is typically 40µA.
- Can the switching frequency of the LMR14020-Q1 be adjusted?
- Does the LMR14020-Q1 have built-in protection features?
- What are the package options for the LMR14020-Q1?
The device is available in 8-pin HSOIC and 10-pin WSON packages.
- Is the LMR14020-Q1 suitable for automotive applications?
- How does the sleep mode operation improve efficiency in the LMR14020-Q1?
The sleep mode reduces switching and gate drive losses at light load currents, improving overall efficiency.
- Can the output voltage of the LMR14020-Q1 be adjusted?
- What is the purpose of the internal bootstrap voltage regulator in the LMR14020-Q1?
The internal bootstrap voltage regulator provides the gate drive voltage for the high-side MOSFET.
