LMR14030SQDDARQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR14030SQDDARQ1 is a SIMPLE SWITCHER automotive step-down converter rated for 40 V input and 3.5 A output current. It operates within an input voltage range of 4 V to 40 V, providing an adjustable output from 800 mV to 28 V. The device features a fixed 2.2 MHz switching frequency and achieves a quiescent current of 40 µA in sleep mode. It is housed in an SO-PowerPAD-8 package and supports an operating junction temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side MOSFET with internal loop compensation
• Automotive qualification compliant with AEC-Q100 standards
• Wide adjustable switching frequency capability
• Low power consumption in shutdown and sleep modes

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial power regulation for unstable supply sources
• Battery-powered systems requiring extended standby life
• Automotive electronics subsystems
• Point-of-load DC/DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number against official Texas Instruments documentation to ensure correct suffix alignment. Confirm that the specific package variant matches design requirements. Cross-reference datasheet revisions to validate electrical characteristics. Ensure environmental compliance details align with project specifications before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 3.5 A buck converter with automotive reliability is required. The fixed 2.2 MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Internal compensation simplifies layout and reduces design time. Verify thermal performance constraints relative to the SO-PowerPAD-8 package capabilities.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR140x0 family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LMR14020 and LMR14050, differing primarily in maximum output current ratings. The family targets applications needing wide input voltage ranges and low quiescent currents for battery efficiency.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR14030SDDAR is the commercial grade equivalent. LMR14030SQDPRTQ1 offers the same electrical performance in a WSON-10 package.