ADM1278-3ACPZ

Overview

The ADM1278-3ACPZ is a hot swap voltage controller manufactured by Analog Devices Inc. It operates within a supply voltage range of 4.5 V to 20 V and features a single channel. The device is housed in a 32-LFCSP (5x5) surface-mount package. It supports PMBus interface communication and includes programmable features such as automatic retry, current limiting, fault timeout, latch-up fault protection, overvoltage protection, slew rate control, and undervoltage lockout. The operating temperature range spans from -40°C to +85°C, with a typical supply current of 5.5 mA.

Feature Summary

• Integrates PMBus interface for digital monitoring and configuration
• Provides comprehensive protection including current limit, OVP, and UVLO
• Supports automatic retry or latch-up modes for fault handling

Applications

• General purpose hot swap controller applications
• Server power management systems
• Telecommunications equipment

Procurement Notes

Verify component authenticity through authorized channels. Confirm the specific suffix matches project requirements. Check datasheet for latest revisions. Ensure ESD precautions are followed during handling. Validate compatibility with system voltage levels before integration.

Selection Notes

Select this part for applications requiring precise power path control via digital interface. Consider the 32-pin LFCSP footprint for layout constraints. Evaluate thermal performance within the specified operating temperature range. Ensure PMBus protocol support exists in the host controller.

Part Context

This component belongs to the ADM1278 series of hot swap controllers designed for safe insertion and removal of circuit boards under load. It integrates monitoring capabilities typically found in separate ADCs, simplifying system design by consolidating control and feedback functions into a single compact package.

Replacement Considerations

Public documentation confirms the ADM1281-1ACPZ-RL as a direct replacement for the ADM1278 series.