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ADM1170:  1.6 V to 16.5 V Hot Swap Controller

Product Details

The ADM1170 is a Hot Swap controller that allows a board to be safely inserted and removed from a live backplane. This is achieved using a pass FET with a current control loop that monitors the input current using a sense resistor. An internal charge pump is used to enhance the gate of the external high side N-channel FET. When an over current condition is detected the gate voltage of the FET is reduced to limit the current flowing through the sense resistor. The ADM1170 operates with a supply voltage ranging from 2.7V to 16.5V. Using separate SENSE pins from VCC the ADM1170 allows for the hotswap of supplies ranging down to 1.6V. During an overcurrent condition the timer cap determines the amount of time the FET will remain in this condition. The ON (ON/CLR) pin is the enable input for the device and also acts as a latched fault reset for the ADM1170-2 model. The SS pin is used to control the inrush current profile by ramping up the current sense limit at a rate set by the SS capacitor. This device is available in two options: the ADM1170-1 will automatic retry for over-current fault and the ADM1170-2 will latch-off for an over-current fault. The ADM1170 is packaged in an 8-lead TSOT package


  • Hot Swap Board Insertion – Line Cards, Raid Systems
  • Electronic Circuit Breaker
  • Industrial High Side Switch/Circuit Breaker


  • Allows Safe Board Insertion and Removal from a Live Backplane
  • Supply Voltage Range from 2.7 V to 16.5V
  • Adjustable Analog Current Limit with Circuit Breaker
  • Fast Response Limits Peak Fault Current Allows Safe Board
  • Controls Supply Voltages from 1.6V to 16.5V
  • Automatic Retry or Latch-Off On Current Fault
  • Charge Pumped Gate Drive for External N-FET Switch
  • True Soft Start Control of Initial Current Profile
  • Undervoltage Lockout
  • 8-pin TSOT Package

Functional Block Diagram for ADM1170


Title Content Type File Type
ADM1170: 1.6V to 16.5V Hot Swap Controller Data Sheet (Rev A, 12/2013) (pdf, 260 kB) Data Sheets PDF
CN-0190: Robust, Multivoltage, High Efficiency, 25 W Universal Power Supply Module with 6 V to 14 V Input  (pdf, 357 kB) Circuit Note PDF
Webcast: Hot Swap Design, How to Get it Right
This webcast closely examines the components of a hot swap design and find out what's critical to getting it right.
Webcasts WEBCAST
Power System Management (Spring 2007)  (pdf, 1170 kB) Overview PDF
Hot Swap And Power Monitoring Bulletin  (pdf, 3226 kB) Solutions Bulletins PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Hot Swap Controller Simulaton Model
Simulation model to help users simulate their designs with ADM1075, ADM1170/1/2, ADM1275/76 and ADM1278 hot swap controls.

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Price, packaging, availability

ADM1170 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADM1170-1AUJZ-RL7 Status: Production 8 ld TSOT 8 Ind Reel, 3000 - $2.13 Y  Material Info PCN Purchase Sample
ADM1170-2AUJZ-RL7 Status: Production 8 ld TSOT 8 Ind Reel, 3000 - $2.13 Y  Material Info PCN 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.

ADM1170 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-ADM1170EBZ Status: Production Evaluation Board $151.80 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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