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Product Detailed Parameters
- Description：12-BIT ADC HOT SWAP CONTROLLER
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tray
- Type：Hot Swap Controller
- Number of Channels：1
- Internal Switch(s)：No
- Applications：General Purpose
- Features：Auto Retry, Fault Timeout, Latched Fault, OVP, PMBus, UVLO
- Programmable Features：Circuit Breaker, Current Limit, Fault Timeout, OVP, 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-WQ (5x5)
- Grade：-
- Qualification：-
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Overview
The ADM1281-1ACPZ is a single-channel 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 32-lead LFCSP package. The device integrates a 12-bit ADC for monitoring current, power, voltage, and temperature via a PMBus interface. It supports a working supply current of 5.5 mA and functions reliably between -40°C and +85°C.
Feature Summary
- Integrates a 12-bit ADC for high-precision back-read of current, power, voltage, and temperature data accessible through the PMBus interface.
- Provides constant power foldback capability to enforce stricter FET Safe Operating Area (SOA) protection during fault conditions.
- Features programmable current limiting with resistor-adjustable thresholds and configurable retry or latch-off behavior on overcurrent faults.
Applications
- Server systems requiring precise power budgeting
- Telecommunications and data communication equipment
- Power monitoring and control circuits
Procurement Notes
Verify component authenticity through authorized channels due to limited availability status. Confirm package integrity and pin alignment upon receipt. Validate datasheet revisions against specific design requirements. Ensure proper ESD handling procedures are followed during storage and assembly to maintain device reliability.
Selection Notes
Select this controller for applications requiring detailed power telemetry and robust FET protection. The integrated ADC eliminates external sensing components. Verify that the required PMBus interface speed and voltage levels match system constraints. Ensure thermal management aligns with the specified operating temperature range.
Part Context
This component belongs to the ADM1281 series of low-voltage hot swap controllers. It serves as an advanced replacement for legacy devices like the ADM1278, offering enhanced monitoring capabilities. The series is designed for modern server and telecom infrastructure where precise power management is critical.
Replacement Considerations
The ADM1278-1ACPZ-RL is a confirmed substitute part number for this component. Verify pin compatibility and software register mapping when transitioning from the legacy ADM1278 to ensure seamless integration without hardware modifications.
