Overview
The LMR14050-Q1 is a 40V, 5A step-down regulator with an integrated high-side MOSFET, designed by Texas Instruments. This device is part of the SIMPLE SWITCHER® family and is optimized for various applications, including industrial and automotive sectors, where power conditioning from unregulated sources is necessary. It features a wide input voltage range from 4V to 40V, making it versatile for different power requirements. The regulator is available in pin-to-pin compatible packages with options for 2A and 3.5A output currents, such as the LMR14020-Q1 and LMR14030-Q1. Its ultra-low quiescent current of 40µA in sleep mode and 1µA in shutdown mode are particularly beneficial for battery-powered systems, enhancing energy efficiency and prolonging battery life.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | 4V to 40V |
| Output Current | Up to 5A |
| Quiescent Current (Sleep Mode) | 40µA |
| Quiescent Current (Shutdown Mode) | 1µA |
| High-Side MOSFET Resistance | 90mΩ (typical) |
| Switching Frequency Range | 200kHz to 2.5MHz |
| Operating Temperature Range | -40°C to 125°C |
| Package Options | 8-pin HSOIC, 10-pin WSON |
| ESD Classification | HBM: H1C, CDM: C4A |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature range of -40°C to 125°C.
- Wide input voltage range from 4V to 40V and adjustable output voltage from 0.8V to 28V.
- Ultra-low quiescent current of 40µA in sleep mode and 1µA in shutdown mode for enhanced energy efficiency.
- Integrated high-side MOSFET with 90mΩ typical resistance.
- Adjustable switching frequency from 200kHz to 2.5MHz and synchronization to an external clock.
- Internal loop compensation for ease of use and reduced external components.
- Precision enable input for simplified regulator control and system power sequencing.
- External soft start and spread spectrum option for reduced EMI.
- Built-in protection features including cycle-by-cycle current limit, thermal sensing, and output overvoltage protection).
Applications
The LMR14050-Q1 is designed for a variety of applications, particularly in the automotive and industrial sectors. It is suitable for:
- Automotive systems such as advanced driver assistance systems (ADAS), infotainment systems, and power management for various electronic components in vehicles.
- Industrial applications requiring high efficiency, small size, and high reliability).
- Battery-powered systems where low quiescent current is crucial for extended 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 output current of the LMR14050-Q1?
The maximum output current is up to 5A).
- What is the quiescent current in sleep mode and shutdown mode?
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 for automotive applications).
- What is the operating temperature range of the LMR14050-Q1?
The operating temperature range is -40°C to 125°C).
- Does the LMR14050-Q1 have built-in protection features?
Yes, it includes cycle-by-cycle current limit, thermal sensing, and output overvoltage protection).
- Can the switching frequency of the LMR14050-Q1 be adjusted?
Yes, the switching frequency can be adjusted from 200kHz to 2.5MHz and synchronized to an external clock).
- What is the benefit of internal loop compensation in the LMR14050-Q1?
Internal loop compensation simplifies the design process and reduces the need for external components).
- Is the LMR14050-Q1 suitable for battery-powered systems?
Yes, its low quiescent current makes it suitable for battery-powered systems, enhancing energy efficiency and prolonging battery life).
