MAX16126TCA/VY+T

Overview

The MAX16126TCA/VY+T is an automotive-grade supervisory circuit designed for load-dump and reverse-voltage protection. It operates within a supply voltage range of 3V to 30V and draws a typical supply current of 224µA. The device functions across an operating temperature range of -40°C to +125°C (TA). It utilizes a built-in charge pump to control two external back-to-back N-channel MOSFETs, isolating downstream power during harmful input events such as battery reversal or load dump pulses.

Feature Summary

• Integrates a charge pump to drive external N-channel MOSFETs for robust power isolation
• Provides automatic protection against reverse voltage and high-voltage load dump transients
• Features adjustable overvoltage threshold detection starting at 1.2V
• Includes power-fail detection capabilities for system monitoring

Applications

• Automotive load dump protection circuits
• Reverse voltage protection in vehicle power systems
• Supervisory monitoring for critical automotive electronic control units

Procurement Notes

Verify the specific suffix 'VY' indicates the qualified automotive grade and AEC-Q100 certification status. Confirm the package type matches the required wettable flank surface mount specification. Ensure the ordering part number aligns with the tape-and-reel packaging format. Cross-reference the manufacturer's latest datasheet for any updates on qualification standards or environmental compliance declarations prior to final procurement.

Selection Notes

Select this component when designing systems requiring integrated protection against severe automotive electrical disturbances. The internal charge pump simplifies design by eliminating the need for external gate drivers for the protective MOSFETs. Consider the 224µA supply current for low-power standby applications. Verify that the external MOSFETs selected can handle the expected load dump energy and current levels specified in the application requirements.

Part Context

This part belongs to the MAX16126 family of supervisory circuits from Analog Devices/Maxim Integrated. It is specifically engineered for harsh automotive environments, offering reliable protection where standard commercial components might fail. The device complements other PMIC solutions by providing dedicated, high-current switching capability through external transistors rather than internal switches.

Replacement Considerations

Direct substitutes include other variants in the MAX16126 series such as MAX16126TCA+T, MAX16126TCD+T, MAX16126TCB+T, and MAX16126TCC+T. These parts share the same core functionality but may differ in specific qualification grades or package options. Verify pinout compatibility and electrical specifications before substitution.