LMR51435SDRRR

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51435SDRRR is a synchronous buck converter from Texas Instruments, part of the LMR514x5 series. It supports an input voltage range of 4 V to 36 V and delivers up to 3.5 A output current. The adjustable output voltage spans from 800 mV to 28 V. Operating frequencies are programmable between 200 kHz and 1.1 MHz. Quiescent current is specified at 25 uA typical, with operating supply current at 35 uA. The device operates within a temperature range of -40°C to +125°C and is housed in a WSON-12 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency across load ranges
• Programmable switching frequency allows optimization for size and performance
• Low quiescent current design enhances efficiency in standby modes
• Wide input voltage range accommodates various power source configurations

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Automotive infotainment systems
• Consumer electronics power management
• Communication equipment bias supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct package type and temperature rating. Confirm RoHS compliance status through the manufacturer's datasheet or certification documents. Cross-reference the component marking code L5143S with the official data sheet to validate authenticity and specific revision level before integration into production designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a wide input voltage range up to 36 V is required alongside moderate output currents near 3.5 A. The WSON-12 package offers a compact footprint suitable for space-constrained layouts. Ensure thermal management strategies align with the device's power dissipation characteristics at maximum load conditions. Verify that the chosen switching frequency falls within the supported 200 kHz to 1.1 MHz range for optimal external component selection.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR514x5 family of wide-VIN synchronous buck converters. The family includes variants such as the LMR51425, which provides 2.5 A output capability. These components share common architectural features including easy-to-use configuration interfaces and robust protection mechanisms. The LMR51435 specifically targets applications requiring higher current density than the 2.5 A variant while maintaining similar form factor constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LMR51425SDRRR serves as a lower-current alternative within the same package and series. Verify compatibility if system requirements allow for reduced output current capacity. No other direct cross-references are confirmed in public documentation.