ADM1270

RECOMMENDED FOR NEW DESIGNS

ADM1270

High Voltage Input Protection Device

RECOMMENDED FOR NEW DESIGNS

Part Details

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Part Models 4

1ku List Price Starting From $1.17

Features

Controls supply voltages from 4 V to 60 V
Gate drive for low voltage drop reverse supply protection
Gate drive for P-channel FETs
Inrush current limiting control
Adjustable current limit
Foldback current limiting
Automatic retry or latch-off on current fault
Programmable current-limit timer for safe operating area (SOA)
Power-good and fault outputs
Analog undervoltage (UV) and overvoltage (OV) protection
16-lead, 3 mm × 3 mm LFCSP
16-lead QSOP

Additional Details

The ADM1270 is a current-limiting controller that provides inrush current limiting and overcurrent protection for modular or battery-powered systems. When circuit boards are inserted into a live backplane, discharged supply bypass capacitors draw large transient currents from the backplane power bus as they charge. These transient currents can cause permanent damage to connector pins, as well as dips on the backplane supply that can reset other boards in the system.

The ADM1270 is designed to control the inrush current, when powering on the system, via an external P-channel field effect transistor (FET).

To protect the system from a reverse polarity input supply, there is a provision made to control an additional external P-channel FET. This feature prevents reverse current flow in case of a reverse polarity connection, which can damage the load or the ADM1270. The ADM1270 is available in a 3 mm × 3 mm, 16-lead LFCSP and a 16-lead QSOP.

Applications

Industrial modules
Battery-powered/portable instrumentation

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 4

1ku List Price Starting From $1.17

Documentation

Technical Documents 2

ADM1270: High Voltage Input Protection Device Data Sheet (Rev.A) 12/01/2014

UG-760: Evaluating the ADM1270 High Voltage Input Protection Device (Rev.A) 04/14/2016

Reference Materials 1

Hot Swap Controllers 08/02/2023

Design Resources 4

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
ADM1270ACPZ-R2	16-Lead LFCSP (3mm x 3mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
ADM1270ACPZ-R7	16-Lead LFCSP (3mm x 3mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
ADM1270ARQZ	16-Lead QSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
ADM1270ARQZ-R7	16-Lead QSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

ADM1270ACPZ-R2
Pin/Package Drawing
16-Lead LFCSP (3mm x 3mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

ADM1270ACPZ-R7
Pin/Package Drawing
16-Lead LFCSP (3mm x 3mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

ADM1270ARQZ
Pin/Package Drawing
16-Lead QSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

ADM1270ARQZ-R7
Pin/Package Drawing
16-Lead QSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Software & Part Ecosystem

Evaluation Kit

EVAL-ADM1270

ADM1270 Evaluation Board

EVAL-ADM1270

ADM1270 Evaluation Board

Buy Now View Details

Product Detail

The ADM1270CP-EVALZ and ADM120RQ-EVALZ evaluation boards are used to demonstrate the functionality of the ADM1270 high voltage input protection device.

Simple device measurements, such as over voltage, undervoltage, and overcurrent protection can be demonstrated with just a single voltage source, a voltmeter, an ammeter, and load resistors.

Features

Controls supply voltages from 4 V to 60 V
Gate drive for low voltage drop reverse supply protection
Gate drive for P-channel FETs
In-rush current limiting control
Adjustable current limit
Foldback current limiting
Automatic retry or latch-off on current fault
Programmable current-limit timer for SOA
Power-good and Fault outputs
Analog UV and OV protection
16-lead 3x3mm LFCSP package
16-lead QSOP package

Resources

PDF

UG-760: Evaluating the ADM1270 High Voltage Input Protection Device (Rev.A)

546.67 K

EVAL-ADM1270

ADM1270 Evaluation Board

Tools & Simulations

ADM1270 Design Worksheet Tool

Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications

Open Tool