LMR51425FSQDRRRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51425FSQDRRRQ1 is an automotive-grade synchronous buck converter from Texas Instruments. It supports a wide input voltage range of 4 V to 36 V and delivers up to 2.5 A output current. The device offers adjustable output voltages from 800 mV to 28 V with a single output configuration. Operating frequencies are programmable between 200 kHz and 1 MHz. Quiescent current is specified at 25 uA, while operating supply current is 35 uA. It functions within a temperature range of -40°C to +125°C and utilizes a WSON-12 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualified synchronous buck topology for reliable power management
• Wide input voltage capability supporting 4 V to 36 V sources
• Integrated shutdown control for system power optimization
• Compact surface-mount packaging suitable for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Telematics control units
• Body electronics modules
• ADAS sensor power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including all suffixes against official Texas Instruments documentation to ensure correct automotive grade and package variant. Confirm RoHS compliance status through the manufacturer datasheet. Check moisture sensitivity levels prior to assembly planning. Validate that the specific ordering code matches the required thermal performance and pinout configuration for the target application design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive environments requiring high efficiency and wide input voltage tolerance. The integrated synchronous rectification reduces external component count compared to diode-based solutions. Consider the programmable switching frequency to optimize for either EMI performance or passive component size. Ensure the thermal requirements of the WSON-12 package align with the expected ambient conditions and load currents in the final enclosure.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the Simple Switcher family of power converters from Texas Instruments. It is designed specifically for automotive applications meeting rigorous reliability standards. The LMR51425 series provides a robust solution for stepping down higher bus voltages to lower logic or sensor levels. It complements other PMIC offerings by focusing on high-current buck conversion in a compact form factor.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the Texas Instruments product transition notices for any recommended upgrades or obsolescence information. Verify pin-to-pin compatibility if substituting with other members of the LMR514xx series.