LM43603AQPWPTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM43603AQPWPTQ1 is an automotive-qualified synchronous step-down voltage converter from Texas Instruments' SIMPLE SWITCHER family. It operates with an input voltage range of 3.5 V to 36 V and delivers a maximum output current of 3 A. The device features adjustable output voltage from 1 V to 28 V, utilizing peak current mode control for stable operation. It supports programmable switching frequencies between 200 kHz and 2.2 MHz and includes integrated protection mechanisms such as thermal shutdown and overcurrent limiting. Packaged in a 16-pin PowerTSSOP, it is designed for high efficiency and compact PCB layouts.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• Integrated synchronous rectification for enhanced power efficiency
• Programmable switching frequency allows optimization for size or performance
• Built-in protection against thermal overload and output short circuits

Voltage Regulators - DC DC Switching Regulators Applications

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

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'AQPWPTQ1' matches the required package, temperature grade, and tape-and-reel configuration. Confirm that the component status aligns with design requirements, noting potential obsolescence indicators. Ensure compatibility with RoHS3 and REACH regulations for the target market. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and supply chain integrity before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive environments requiring robust power management within a 36 V system. Choose the LM43603AQPWPTQ1 if a 3 A continuous load capability is necessary alongside adjustable output voltages. Consider its wide input voltage range for applications experiencing significant line fluctuations. Evaluate the 16-PowerTSSOP package for space-constrained designs needing efficient heat dissipation without external heatsinks.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM4360x SIMPLE SWITCHER series, which provides easy-to-use synchronous buck converters. The family shares common control architectures but varies in output current ratings, ranging from 500 mA to 3 A. The LM43603 variant specifically targets higher current demands while maintaining the series' benefits of minimal external components and flexible switching frequency options for optimized design trade-offs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM43603PWPT is listed as a substitute option by the manufacturer.