LMR14050SQDDAQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR14050SQDDAQ1 is a 40V, 5A SIMPLE SWITCHER step-down regulator from Texas Instruments. It features an input voltage range of 4V to 40V and delivers up to 5A continuous output current. The adjustable output voltage spans from 800mV to 28V. Operating with a switching frequency between 200kHz and 2.5MHz, it maintains a typical quiescent current of 40μA in active mode and 1μA in shutdown. The device operates within a temperature range of -40°C to +125°C and holds AEC-Q100 Grade 1 qualification for automotive applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side MOSFET with low on-resistance for efficient power conversion
• Internal loop compensation simplifies design by minimizing external component count
• Wide adjustable switching frequency allows optimization for efficiency or size
• Comprehensive protection including thermal sensing, overvoltage, and cycle-by-cycle current limit

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive battery regulation systems
• Industrial power supply modules
• Telecommunications and data communication equipment
• General wide-input voltage regulation tasks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Q1' against official Texas Instruments documentation to confirm AEC-Q100 automotive grade status. Ensure the package designation matches the required SO-PowerPAD-8 footprint. Cross-reference the full part number with manufacturer databases to validate current production status and regional availability constraints before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring robust 5A output capability within a compact form factor. The wide input range supports direct connection to unregulated sources. Internal compensation reduces design complexity compared to non-integrated solutions. Consider the thermal performance of the PowerPAD package for high-load environments to ensure reliable operation across the specified temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR14050 series of SIMPLE SWITCHER regulators. It shares pin-to-pin compatibility with lower-current variants such as the LMR14020-Q1 and LMR14030-Q1 within the same package options. This family provides scalable solutions for designers needing consistent interface characteristics while adjusting for different current requirements in automotive and industrial applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR14050SDDARQ1

Voltage Regulators - DC DC Switching Regulators FAQ

What is the minimum achievable output voltage?

The minimum regulated output voltage is 800mV.

Does the device support frequency synchronization?

Yes, the switching frequency can be synchronized to an external clock signal.

Is spread spectrum available to reduce EMI?

Yes, the device includes spread spectrum options to minimize electromagnetic interference.