MAX16126TCA+

Overview

The MAX16126TCA+ is a supervisory circuit designed for load-dump and reverse-voltage protection. It operates within a supply voltage range of 3V to 30V and monitors a single input. Key electrical parameters include a threshold voltage of 1.225 V, an overvoltage threshold of 1.25 V, and a reset delay time of 150 us. The device features an active low, open-drain output type and lacks manual reset or watchdog timer functions. It supports a maximum power dissipation of 1.1765 W and withstands a maximum power supply voltage of 90 V. The component is housed in a TQFN-12 package with surface-mount installation.

Feature Summary

• Provides integrated protection against harmful input voltages including overvoltage, reverse voltage, and high-voltage transient pulses using built-in charge pump control.
• Features adjustable overvoltage and undervoltage comparator thresholds to accommodate specific system requirements.
• Supports limiter mode operation for enhanced voltage regulation during fault conditions.

Applications

• Automotive electronic systems requiring robust power management
• High-speed operational circuits needing low-voltage protection
• Load-dump protection scenarios in vehicle power networks

Procurement Notes

Verify current availability status as the part may be subject to limited supply or factory special orders. Confirm RoHS compliance details and moisture sensitivity level (MSL 1) prior to procurement. Ensure the TQFN-12 package matches the PCB footprint design. Check for alternative tape and reel options if volume production is required. Validate that the 3V to 30V operating range aligns with the target application's power specifications.

Selection Notes

Select this component when dedicated load-dump and reverse-voltage protection is required for automotive or industrial applications. The adjustable comparator thresholds allow customization for specific voltage monitoring needs. Consider the TQFN-12 package size for space-constrained designs. Verify that the absence of a manual reset function does not conflict with system recovery protocols. Ensure the 150 us reset delay meets the timing requirements of the monitored circuit.

Part Context

The MAX16126TCA+ belongs to the MAX16126/MAX16127 series of supervisory circuits manufactured by Analog Devices / Maxim Integrated. These devices are specifically engineered to protect power supplies from damaging input conditions. The series utilizes internal charge pumps to manage external components effectively. This part number represents a specific variant within the broader family of voltage protection ICs designed for harsh electrical environments.

Replacement Considerations

Direct substitutes include MAX16126TCD+, MAX16126TCB+, and MAX16126TCC+. These variants share similar load-dump and voltage protection functionalities but may differ in ordering suffixes or packaging configurations. Verify pin compatibility and electrical specifications before substitution.