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Product Detailed Parameters
- Description：IC HOT SWAP CTRLR GP 32LFCSP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tray
- Type：Hot Swap Controller, Monitor
- Number of Channels：1
- Internal Switch(s)：No
- Applications：General Purpose
- Features：PMBus
- Programmable Features：Auto Retry, Current Limit, Fault Timeout, Latched Fault, OVP, Slew Rate, UVLO
- Voltage - Supply：4.5V ~ 20V
- Current - Output (Max)：-
- Operating Temperature：-40°C ~ 85°C
- Current - Supply：5.5 mA
- Mounting Type：Surface Mount
- Package / Case：32-WFQFN Exposed Pad, CSP
- Supplier Device Package：32-LFCSP (5x5)
- Grade：-
- Qualification：-
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Overview
The ADM1278-1AACPZ is a hot swap controller and digital power monitor featuring a PMBus interface. It operates within a supply voltage range of 4.5 V to 20 V and supports a single channel. The device integrates a 12-bit ADC for current, power, voltage, and temperature backreading. It utilizes an internal current sense amplifier with a default limit of 20 mV, adjustable via external resistors. The component is housed in a 32-lead LFCSP package and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Integrates a 12-bit ADC for precise monitoring of current, voltage, power, and temperature via PMBus
- Features programmable automatic retry or latch-off modes for overcurrent fault handling
- Supports constant power foldback to enhance FET Safe Operating Area protection
- Includes remote temperature detection with configurable warning and shutdown thresholds
Applications
- Server systems requiring board insertion and removal from live backplanes
- Telecommunications and data communication equipment power management
- Power budgeting and control applications in industrial infrastructure
Procurement Notes
Verify the specific suffix 'AA' against official Analog Devices documentation to confirm pinout and feature variations compared to standard variants. Confirm availability status as distribution channels may list limited stock or obsolete status. Ensure compatibility with existing PCB footprints and thermal requirements before finalizing procurement decisions.
Selection Notes
Select this component when high-precision digital power monitoring is required alongside hot swap capabilities. The integrated 12-bit ADC eliminates the need for external sensing amplifiers in many designs. Consider the PMBus interface for system-level integration and telemetry. Evaluate the 32-lead LFCSP package constraints against available board space and thermal dissipation needs.
Part Context
This part belongs to the ADM127x family of hot swap controllers designed by Analog Devices. These devices are engineered for protecting circuits during insertion into live backplanes. The ADM1278 variant specifically adds comprehensive digital monitoring features, distinguishing it from basic controllers that lack telemetry capabilities.
Replacement Considerations
The ADM1281-1ACPZ-RL is documented as a direct replacement for the ADM1278 series. Verify pin-to-pin compatibility and software register mapping before substitution.
