ADM1273

RECOMMENDED FOR NEW DESIGNS

High Voltage Positive Hot-Swap Controller and Digital Power Monitor with PMBus

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: price unavailable

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Part Details

Drop-in replacement to ADM1272
Controls supply voltages from 16V to 80V (absolute maximum 120V)
High voltage (80V) IPC-9592 compliant packaging
<500ns response time to short circuit
FET energy monitoring for adaptable FET SOA protection
Gate boost mode for fast recovery from OC transients
Programmable random start mode to stagger power-on
FET fault detection
Remote temperature sensing with programmable warning and shutdown thresholds
Programmable 2.5mV to 30mV system current-limit setting range

±0.85% accurate current measurement with 12-bit ADC
I_LOAD, V_IN, V_OUT, temperature, power, and energy telemetry
Programmable start-up current limit
Programmable linear output voltage soft start
1% accurate UV and OV thresholds
Programmable hot-swap restart function
2 programmable GPIO pins
Reports power and energy consumption
Peak detect registers for current, voltage, and power
PMBus fast mode compliant interface
48-lead, 7 mm × 8 mm LFCSP

Part Models: 2
1ku List Price: price unavailable

Documentation

Data Sheet 1

ADM1273: High Voltage Positive Hot-Swap Controller and Digital Power Monitor with PMBus Data Sheet (Rev.0) 09/04/2025

User Guide 1

UG-2344: Evaluating the ADM1273 High-Voltage Positive Hot-Swap Controller and Digital Power Monitor with PMBus (Rev.0) 09/04/2025

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADM1273-1ACPZ	48-Lead LFCSP (8mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADM1273-1ACPZ-RL	48-Lead LFCSP (8mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Software Resources

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Tools & Simulations

LTpowerPlay®

LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

Open Tool

Design Tool 1

ADM1273 Design Worksheet Tool (Rev.1.02)

Evaluation Kits

Evaluating the ADM1273 High-Voltage Positive Hot-Swap Controller and Digital Power Monitor with PMBus

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Features and Benefits

Fully functional evaluation board for the ADM1273
Populated with 54V, 30A, 1mF design
40V undervoltage and 60V overvoltage settings
120V absolute maximum
Flexible N-channel MOSFET footprint suits different packages
Up to 4 parallel MOSFETs, 2 parallel sense resistors
I²C/PMBus communication
MOSFET temperature measurement capability
LED indicated status outputs
Toggle and push-button switch for easy input control

Product Details

The EVAL-ADM1273-AZ is a full featured evaluation board for the ADM1273. The board layout provides a clear visual of all the peripheral components and the hot swap power path. The layout also maximizes the ability of the board to dissipate heat for some of the key components on the power path, allowing the evaluation of high-current hot-swap setups. The evaluation board is prepopulated and tested with a 54V, 30A hot-swap design capable of working with a 1mF output capacitor.

Two sense resistor footprints and four multipackage MOSFET footprints (two on the bottom side) provide great flexibility and allow a wide range of application setups. Multiple test points allow easy access to all critical points and pins. Six LEDs provide direct visual indication of board status such as supply input, output, GPIO1, GPIO2, power good, and fault.

The board supports PMBus™ communication with the ADM1273 and is fully compatible with the LTpowerPlay evaluation software. A USB-to-PMBus controller (DC1613A) is required to connect EVAL-ADM1273-AZ to a Windows-based computer running LTpowerPlay.

Complete specifications for the ADM1273 are available in the ADM1273 data sheet, which must be consulted in conjunction with this user guide when using the evaluation board.

Resources

UG-2344: Evaluating the ADM1273 High-Voltage Positive Hot-Swap Controller and Digital Power Monitor with PMBus (Rev.0)
9/4/2025

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