LM62435APPQRJRRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM62435APPQRJRRQ1 is an automotive-grade synchronous step-down DC-DC converter from Texas Instruments. It operates with an input voltage range of 3 V to 36 V and delivers a maximum output current of 3.5 A. The device features a fixed 3.3 V output and integrates a high-frequency switching controller operating at 2.1 MHz. Key electrical specifications include a quiescent current of 9 uA and a shutdown supply current of 2.3 nA. It supports operation within a junction temperature range of -40°C to +150°C and utilizes a VQFN-HR-14 package for surface mount installation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant for reliability in vehicle environments
• Low electromagnetic interference design for sensitive applications
• Integrated synchronous rectification for improved efficiency
• Shutdown pin support for power management control

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Instrument cluster power distribution
• Telematics control units
• Body control modules

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 APPQRJRRQ1 designation matches the required automotive grade, package type, and tape-and-reel quantity. Cross-reference the manufacturer's latest datasheet for any updates on moisture sensitivity levels or recommended soldering profiles prior to procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V rail is required for automotive loads drawing up to 3.5 A. The 2.1 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure the application environment stays within the specified -40°C to +150°C operating range. Verify that the input voltage source remains stable between 3 V and 36 V to maintain regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM624xx family of low EMI synchronous buck converters designed specifically for automotive applications. It shares the VQFN-HR-14 package form factor with other members like the LMQ62440 but differs in output current capability and fixed voltage configuration. The family emphasizes noise reduction and robust performance under varying automotive line conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LMQ62440APPQRJRRQ1 offers similar packaging and topology but provides 4 A output current and adjustable voltage. Verify if the fixed 3.3 V constraint of the LM62435 is acceptable or if adjustability is needed. Check if the higher current rating of the LMQ variant fits within the thermal budget of the existing PCB layout.