ADM1281-1ACPZ-RL

Hot Swap Controllers Overview

The ADM1281-1ACPZ-RL is a low-voltage hot swap controller designed for safe insertion and removal of circuit boards from live backplanes. It features an integrated 12-bit ADC providing current, power, voltage, and temperature feedback via the PMBus interface. The device utilizes an internal current sense amplifier to measure load current across a detection resistor. It supports constant power foldback for enhanced FET SOA protection and includes programmable undervoltage, overvoltage, and power good thresholds with 1% accuracy.

Hot Swap Controllers Feature Summary

• Integrated 12-bit ADC for high-precision monitoring of input/output voltage, load current, and temperature
• PMBus interface compatibility for digital control and data logging
• Constant power foldback capability to enforce strict Field-Effect Transistor Safe Operating Area limits
• Configurable RETRY pin for automatic retry or latch-off behavior during overcurrent faults

Hot Swap Controllers Applications

• Server blade power management
• Telecommunications equipment hot swapping
• Data communication infrastructure power budgeting

Hot Swap Controllers Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and tape/reel specifications. Confirm availability status as distribution channels may list limited stock or end-of-life conditions. Ensure the ordering part number matches the required thermal and electrical characteristics for the target application design.

Hot Swap Controllers Selection Notes

Select this component when precise digital monitoring of power parameters is required alongside hot swap protection. The integrated ADC eliminates the need for external sensing circuits. Verify that the system voltage range falls within the specified 4.5V to 20V operating window. Ensure the PCB layout accommodates the LFCSP-32 package dimensions and thermal requirements.

Hot Swap Controllers Part Context

This component belongs to the ADM1281 family of hot swap controllers from Analog Devices. It serves as a successor to earlier models like the ADM1278, offering improved accuracy and digital integration. The device is categorized under Power Management ICs (PMIC) specifically for hot swap voltage control applications in industrial and telecom sectors.

Hot Swap Controllers Replacement Considerations

The ADM1278 series is identified as a predecessor. Verify if the ADM1281-1ACPZ-RL is a direct pin-compatible replacement for legacy designs using the ADM1278, noting potential differences in threshold accuracies and feature sets.