LMR14050SQDDARQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR14050SQDDARQ1 is an automotive-grade SIMPLE SWITCHER buck converter from Texas Instruments, featuring a wide input voltage range of 4 V to 40 V and delivering up to 5 A of continuous output current. It integrates a high-side MOSFET with a minimum on-time of 75 ns and supports adjustable output voltages from 800 mV to 28 V. The device operates with a low quiescent current of 40 µA in sleep mode and includes internal loop compensation for simplified design. It offers a programmable switching frequency between 200 kHz and 2.5 MHz, ensuring compliance with AEC-Q100 standards for temperature grade 1 applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side MOSFET with 90 mOn-resistance and 75 ns minimum on-time
• Internal loop compensation eliminates external component complexity
• Adjustable switching frequency from 200 kHz to 2.5 MHz with spread spectrum option
• Precision enable input simplifies system power sequencing

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive battery regulation
• Industrial power supplies
• Telecommunications and data communication systems
• General wide-input voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as SQDDARQ1 to ensure correct package type (SO-PowerPAD-8) and automotive qualification (AEC-Q100). Confirm that the specific ordering code matches the required thermal performance and environmental operating range specifications defined in the official datasheet before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring robust automotive reliability with high current capability. The integrated high-side MOSFET and internal compensation reduce external bill of materials. Ensure the application input voltage remains within the 4 V to 40 V range and consider the thermal dissipation requirements associated with the SO-PowerPAD-8 package for optimal performance.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR140x0 family of SIMPLE SWITCHER regulators, which includes pin-to-pin compatible variants like the LMR14020-Q1 and LMR14030-Q1. These regulators are designed for unregulated power sources in industrial and automotive sectors. The family emphasizes ease of use through internal compensation and low standby currents suitable for battery-powered applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR14050SSQDDARQ1

Voltage Regulators - DC DC Switching Regulators FAQ

Does the LMR14050SQDDARQ1 support frequency synchronization?

Yes, the device allows for frequency synchronization with an external clock signal.

What protection features are included in this regulator?

It includes cycle-by-cycle current limiting, thermal shutdown, over-power shutdown, and output overvoltage protection.