ADM1270:  High Voltage Input Protection Device

Product Details

Product Status:Recommended for New Designs

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

FEATURES and BENEFITS

  • 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 SOA
  • Power-good and Fault outputs
  • Analog undervoltage (UV) and overvoltage (OV) protection
  • 16-lead 3x3mm LFCSP package
  • 16-lead QSOP package

Functional Block Diagram for ADM1270

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADM1270 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM1270ACPZ-R2 Status: Production LFCSP:LEADFRM CHIP SCALE 16 Ind Reel, 250 $2.79 $2.49 Y  Material Info Notify Me Purchase
ADM1270ACPZ-R7 Status: Production LFCSP:LEADFRM CHIP SCALE 16 Ind Reel, 1500 - $2.49 Y  Material Info Notify Me Purchase Sample
ADM1270ARQZ Status: Production QSOP 150 MIL 16 Ind Tube, 98 $2.84 $2.49 Y  Material Info Notify Me Purchase
ADM1270ARQZ-R7 Status: Production QSOP 150 MIL 16 Ind Reel, 1000 - $2.49 Y  Material Info Notify Me Purchase Sample
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADM1270 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM1270CP-EVALZ Status: Production Evaluation Board $50.00 Yes -
ADM1270RQ-EVALZ Status: Production Evaluation Board $50.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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