LM61480Q4RPHRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM61480Q4RPHRQ1 is an automotive-grade synchronous step-down (buck) converter from Texas Instruments. It features a fixed 4V output voltage and supports up to 8A continuous output current. The device operates with an input voltage range of 3V to 36V. It utilizes a VQFN-HR-16 package for surface-mount installation. The switching frequency is adjustable between 200kHz and 2.2MHz. It is qualified under AEC-Q100 standards and functions within a junction temperature range of -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• Integrated synchronous rectification for high efficiency
• Adjustable switching frequency capability
• Wide input voltage operational range

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'Q4' confirms the fixed 4V output configuration, as other suffixes in this family denote different voltages or adjustability. Ensure the 'HR' package designation matches the required thermal and footprint specifications for the target PCB layout. Confirm that the Q1 automotive grade requirement aligns with the system's reliability targets before finalizing the order.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 4V rail is required for automotive applications demanding up to 8A. The wide input range accommodates standard 12V and 24V vehicle architectures. Consider the thermal performance of the VQFN-HR-16 package relative to the expected ambient conditions and board copper area to ensure operation within the specified temperature limits without external heatsinking.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM614xx-Q1 series of automotive buck converters. It shares the same VQFN-HR-16 package and core architecture with variants like the LM61480Q3RPHRQ1 and LM61480Q5RPHRQ1. The primary distinction lies in the internal feedback network setting the output voltage, allowing designers to choose the exact voltage level while maintaining identical pinout and thermal characteristics across the series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM61480Q3RPHRQ1 for 3.3V output and LM61480Q5RPHRQ1 for 5V output. For adjustable output requirements, consider the LM61480QRPHRQ1. Verify that any replacement maintains the same 8A current rating and AEC-Q100 qualification status.