ATL432LIAQDBZRQ1

Overview

The ATL432LIAQDBZRQ1 is an automotive-grade programmable shunt regulator manufactured by Texas Instruments. It operates within a wide voltage range of 2.5 V to 36 V and features a maximum output current of 15 mA. The device offers an initial accuracy of 1% and a temperature coefficient of 92 PPM/°C. Designed for high-bandwidth applications with low quiescent current, it supports operation across an extended temperature range from -40°C to +125°C. The component is housed in a compact SOT-23-3 package and meets AEC-Q100 qualification standards for automotive reliability.

Feature Summary

• Automotive-grade programmable shunt regulator designed for high bandwidth and low quiescent current consumption
• Wide operating voltage range supporting adjustable reference outputs up to 36 V
• High precision performance with 1% initial accuracy and stable thermal characteristics
• Qualified for harsh automotive environments with extended temperature range capability

Applications

• Automotive power supply regulation circuits
• Battery management systems requiring precise voltage monitoring
• Industrial control systems needing reliable shunt regulation
• General-purpose voltage reference applications in automotive electronics

Procurement Notes

Verify the specific suffix DBZRQ1 to confirm the reel packaging configuration and tape-and-reel quantity specifications. Ensure the order matches the exact part number including all alphanumeric characters to avoid receiving non-automotive grade variants or different package types. Confirm compliance with RoHS directives and check for any recent product change notices that may affect pinout or electrical parameters before finalizing procurement.

Selection Notes

Select this component when designing automotive systems requiring a programmable shunt regulator with high bandwidth capabilities. The 15 mA output current limit distinguishes it from higher-current alternatives, making it suitable for precision sensing rather than heavy load driving. Consider the 1% initial accuracy requirement against system tolerance needs. The SOT-23-3 package is ideal for space-constrained PCB layouts common in modern automotive modules.

Part Context

This part belongs to the TL43x-Q1 family of programmable shunt regulators, which are widely used in automotive power management. It shares functional similarities with the TL432AQDBZRQ1 but is specifically optimized for automotive applications with enhanced bandwidth and lower quiescent current. The family includes various packages and accuracy grades, with the ATL432 variant focusing on high-speed response requirements.

Replacement Considerations

The TL432AQDBZRQ1 serves as a direct functional substitute within the same package and qualification class. Verify that the replacement meets the specific bandwidth requirements if high-speed response is critical. Other TL43x-Q1 variants may offer different current ratings or accuracy levels; ensure the selected alternative matches the 15 mA output current constraint and 1% accuracy specification.