Technical Data Sheet (576.76KB) EN See all Technical Docs

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Product Overview

The ADM1177-2ARMZ-R7 is a Hot Swap Controller and Digital Power Monitor with soft start pin. It offers digital current and voltage monitoring via an on-chip, 12-bit analog-to-digital converter (ADC), communicated through an I²C® interface. An internal current sense amplifier measures voltage across the sense resistor in the power path via the VCC pin and the SENSE pin. It limits the current through this resistor by controlling the gate voltage (via the GATE pin) of an external N-channel FET in the power path. The voltage across the sense resistor (and, therefore, the inrush current) is kept below a preset maximum. It protects the external FET by limiting the time that the maximum current runs through it. This current limit period is set by the value of the capacitor attached to the TIMER pin. Additionally, the device provides protection from overcurrent events that may occur once the hot swap event is complete.
  • Allows safe board insertion and removal from a live backplane
  • Precision current sense amplifier
  • Precision voltage input 12-bit ADC for current and voltage readback
  • Charge pumped gate drive for external N-channel FET
  • Adjustable analog current limit with circuit breaker
  • ±3% accurate hot swap current limit level
  • Fast response limits peak fault current
  • Automatic retry or latch-off on current fault
  • Programmable hot swap timing via TIMER pin
  • Soft start pin for reference adjustment and programming of initial current ramp rate
  • Active high ON pin

Product Information

Controller IC Case Style:
Input Voltage:
MSL 1 - Unlimited
No. of Pins:
10 Pins
Operating Temperature Max:
85 °C
Operating Temperature Min:
-40 °C
Cut Tape
Product Range:
ADM1177 Series
No SVHC (17-Dec-2015)
Supply Voltage Max:
16.5 V
Supply Voltage Min:
3.15 V

Find similar products  grouped by common attribute


  • Communications & Networking;
  • Power Management;
  • Computers & Computer Peripherals;
  • Consumer Electronics;
  • Portable Devices

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Country of Origin:

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Tariff No:
Weight (kg):

Associated Products

Similar Products

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  • Controller IC Case Style: MSOP
  • Operating Temperature Min: -40°C
  • Operating Temperature Max: 85°C
  • No. of Pins: 10Pins
  • Input Voltage: -
  • Product Range: ADM1177 Series
  • Supply Voltage Min: 3.15V
  • Packaging: Cut Tape
  • Supply Voltage Max: 16.5V
  • Controller Applications: Central Office Equipment, Communication, PCs/Servers, Power Monitoring