LM5161QPWPTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM5161QPWPTQ1 is a high-voltage synchronous buck converter from Texas Instruments, designed for automotive applications with AEC-Q100 qualification. It operates within an input voltage range of 4.5 V to 100 V and delivers up to 1 A of output current. The device integrates a 1 MHz fixed switching frequency and supports adjustable frequencies. Key electrical parameters include a maximum output voltage of 7.3 V and a quiescent current of 2.3 mA. It functions reliably across an extended temperature range from -40°C to +125°C and utilizes an HTSSOP-14 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck topology supporting wide input voltage ranges up to 100 V
• Automotive-grade reliability certified under AEC-Q100 standards
• Fixed 1 MHz switching frequency enabling compact external component sizing
• Built-in shutdown capability for power management control

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Body control modules
• High-voltage sensor interfaces

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix PWPTQ1 to confirm the HTSSOP-14 package and automotive grade status. Ensure compatibility with required thermal dissipation methods for the operating environment. Cross-reference datasheet revisions to confirm pinout consistency if replacing older variants. Confirm moisture sensitivity level handling during assembly processes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a single-output synchronous buck solution is required for high-input voltage automotive environments. The 1 A current limit suits low-power logic or sensor rails. Consider the 1 MHz frequency trade-off between efficiency and passive size. Verify that the 7.3 V maximum output constraint meets downstream load requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5161 family of high-voltage synchronous buck converters. The QP prefix indicates automotive qualification, while the TQ1 suffix denotes the specific tape-and-reel packaging and temperature grade. It serves as a robust power stage for 12V/24V/48V automotive networks requiring high voltage tolerance.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5161PWPRQ1: Non-automotive grade version with similar electrical characteristics but different qualification status.