LMR51435SQDRRRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51435SQDRRRQ1 is an automotive-grade synchronous buck converter manufactured by Texas Instruments. It operates with an input voltage range of 4.5 V to 36 V and delivers a continuous output current of 3 A. The device supports switching frequencies of 500 kHz and 1.1 MHz, ensuring compatibility with compact passive components. It features a junction temperature range from -40°C to 150°C and includes internal short circuit protection with hiccup mode. The component utilizes a SOT-23 package for space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Configured for rugged industrial applications with wide input voltage tolerance
• Features internal compensation and integrated synchronous rectification for simplified design
• Includes precision enable functionality and ±1.5% tolerance voltage reference

Voltage Regulators - DC DC Switching Regulators Applications

• Appliances
• Building automation
• Motor drives
• General purpose wide VIN power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix codes against official documentation to confirm functional variations such as switching frequency selection or packaging type. Ensure the component meets required automotive qualification standards for the target application environment. Cross-reference the datasheet revision history to validate parameter consistency before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring high efficiency in space-limited automotive or industrial environments. The availability of fixed switching frequencies allows optimization between component size and electromagnetic interference performance. Consider the thermal characteristics of the SOT-23 package when determining heat dissipation requirements for the specific load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LMR5143x family of SIMPLE SWITCHER converters, designed for ease of use in wide input voltage scenarios. It serves as a pin-to-pin compatible alternative to legacy parts like the TPS54202 and TPS54302, facilitating direct upgrades in existing designs while offering improved performance metrics and robust protection features.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LMR51435SQDRRRQ1 is explicitly documented as pin-to-pin compatible with the TPS54202 and TPS54302. Verify that the replacement part matches the required switching frequency option and output current capabilities of the original design.