LM61435AFSQRJRRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM61435AFSQRJRRQ1 is an automotive-grade synchronous step-down DC-DC converter from Texas Instruments. It operates with input voltages from 3 V to 36 V and delivers up to 3.5 A of output current. The device features adjustable switching frequencies between 200 kHz and 2.2 MHz, enabling optimization for efficiency or size. Output voltage ranges from 1 V to 34.2 V. It includes integrated high-side and low-side MOSFETs and supports a shutdown function. Operating temperature spans -40°C to +150°C TJ. The component is housed in a 14-pin VQFN-HR package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-side and low-side power MOSFETs for compact design
• Low electromagnetic interference (EMI) performance suitable for sensitive automotive environments
• Adjustable switching frequency allows trade-off between efficiency and external component size
• Automotive qualification ensuring reliability under harsh thermal conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment systems
• Instrument clusters
• Body control modules
• Telematics units

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as 'Q1' for automotive grade and 'RRQ1' for tape-and-reel packaging configuration. Confirm that the specific revision matches the required functional safety documentation if applicable. Ensure compatibility with the intended PCB footprint for the 14-VQFN-HR package before ordering.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, low-EMI solution is required for 12V or 24V automotive bus architectures. It is appropriate for applications demanding high efficiency across varying load conditions. Consider the maximum output current of 3.5 A against peak load requirements. Evaluate the thermal performance within the enclosed vehicle environment given the wide operating temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMQ614xx-Q1 family of automotive buck converters. It shares architectural similarities with other members like the LMQ61460 but offers lower current capacity. The family is designed to meet stringent automotive standards for noise immunity and durability. It serves as a key power management element in modern vehicle electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other members of the LMQ614xx-Q1 series with compatible pinouts and electrical characteristics. Verify equivalent current ratings and EMI specifications when cross-referencing with similar automotive regulators from the same manufacturer.