LM46000AQPWPTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM46000AQPWPTQ1 is an automotive-qualified synchronous buck switching regulator from Texas Instruments. It operates with an input voltage range of 3.5 V to 60 V and provides a positive adjustable output voltage between 1 V and 28 V. The device delivers a maximum output current of 500 mA. Key electrical parameters include a quiescent current of 24 uA and a switchable frequency range from 200 kHz to 2.2 MHz. It functions within a junction temperature range of -40°C to +125°C and is housed in a 16-PowerTSSOP package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive grade reliability certified under AEC-Q100 standards for robust performance in vehicle environments.
• Wide input voltage capability supports direct connection to 12V, 24V, and 48V automotive bus systems.
• Integrated synchronous rectification ensures high efficiency across the load and input voltage ranges.
• Programmable switching frequency allows optimization for external component size and transient response.

Voltage Regulators - DC DC Switching Regulators Applications

• Power distribution units in automotive infotainment and telematics modules
• Step-down conversion for electronic control units (ECUs) requiring stable low-voltage rails
• Battery-powered automotive subsystems needing efficient voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'PWPT' confirms the 16-PowerTSSOP package and tape-and-reel shipping format. Confirm AEC-Q100 qualification status matches project requirements. Check for end-of-life or not-recommended-for-new-designations if available. Ensure compatibility with moisture sensitivity level handling procedures during assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 500 mA output current is sufficient for the load. Choose over higher-current variants like the LM46001 or LM46002 if board space and cost are primary constraints. Verify that the required output voltage falls within the 1 V to 28 V adjustable range. Consider the thermal performance of the PowerTSSOP package for the expected ambient conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM4600x family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM46001 (1A) and LM46002 (2A) but offers lower current capacity. The family is designed for automotive applications requiring wide input voltage tolerance and compact footprints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct functional substitutes within the same package include LM46001QPWPTQ1 and LM46002QPWPTQ1, though these offer higher output currents. Non-automotive equivalents like LM46000PWPT exist but lack AEC-Q100 certification. Verify pinout and thermal characteristics before substitution.