ADM1275-3ARQZ-R7
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Analog Devices Inc. ADM1275-3ARQZ-R7

Manufacturer No:
ADM1275-3ARQZ-R7
Manufacturer:
Analog Devices Inc.
Package:
Tape & Reel (TR)
Description:
IC HOT SWAP CTRLR GP 20QSOP
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The ADM1275-3ARQZ-R7, produced by Analog Devices Inc., is a hot-swap controller designed to enable the safe insertion and removal of circuit boards from a live backplane. This device integrates several key functionalities, including current and voltage monitoring, overcurrent protection, and a digital interface for power management. The ADM1275 features a 12-bit analog-to-digital converter (ADC) for precise current and voltage readback, accessible via a PMBus interface. This allows for real-time monitoring and control of power parameters, enhancing the reliability and efficiency of power systems.

Key Specifications

Parameter Min Typ Max Unit Comments
Nominal Bus Voltage (VDD) 2.7 - 5.5 V 3 V to 5 V ± 10%
Current Limit Range 5 mV - 25 mV - Resistor-programmable
ADC Resolution - - - 12-bit -
Response Time to Short Circuit - - 370 ns - -
PMBus Interface - - - - Fast mode compliant, up to 400 kHz
Package Type - - - - 20-lead QSOP and 20-lead LFCSP

Key Features

  • Hot-Swap Capability: Allows safe insertion and removal of circuit boards from a live backplane.
  • Current and Voltage Monitoring: Integrated 12-bit ADC for precise current and voltage readback via PMBus interface.
  • Overcurrent Protection: Resistor-programmable current limit (5 mV to 25 mV) with ±1% accuracy and automatic retry or latch-off on current fault.
  • Gate Drive: Charge-pumped gate drive for multiple external N-channel FETs with high gate drive voltage to ensure lowest RDSON.
  • FET Protection: Foldback for tighter FET SOA protection and programmable current limit timer for SOA.
  • Power-Good Status Output: Indicates the power status of the system.
  • Analog UV and OV Protection: Built-in undervoltage and overvoltage protection.
  • Programmable GPOs: Multifunction general-purpose outputs (GPOs) for various system control needs.

Applications

  • Power Monitoring and Control/Power Budgeting: Ideal for systems requiring precise power monitoring and control.
  • Central Office Equipment: Used in telecommunications and data communication equipment.
  • Telecommunication and Data Communication Equipment: Suitable for various telecommunication and data communication systems.
  • PCs/Servers: Applicable in power management systems for computers and servers.

Q & A

  1. What is the primary function of the ADM1275-3ARQZ-R7?

    The primary function is to act as a hot-swap controller, allowing safe insertion and removal of circuit boards from a live backplane while providing current and voltage monitoring and protection.

  2. What is the resolution of the ADC in the ADM1275-3ARQZ-R7?

    The ADC has a 12-bit resolution.

  3. How is the current limit set in the ADM1275-3ARQZ-R7?

    The current limit is set using a resistor divider network from the internal reference voltage to the ISET pin, allowing for a range of 5 mV to 25 mV.

  4. What type of interface does the ADM1275-3ARQZ-R7 use for power management?

    The device uses a PMBus interface for power management, which is fast mode compliant up to 400 kHz.

  5. What are the package options for the ADM1275-3ARQZ-R7?

    The device is available in 20-lead QSOP and 20-lead LFCSP packages.

  6. Does the ADM1275-3ARQZ-R7 have built-in protection features?

    Yes, it includes overcurrent protection, undervoltage and overvoltage protection, and foldback for tighter FET SOA protection.

  7. Can the ADM1275-3ARQZ-R7 be configured for automatic retry or latch-off on current fault?

    Yes, the device can be configured for either automatic retry or latch-off on current fault.

  8. What is the response time to short circuit in the ADM1275-3ARQZ-R7?

    The response time to short circuit is 370 ns.

  9. What are some common applications of the ADM1275-3ARQZ-R7?

    Common applications include power monitoring and control, central office equipment, telecommunication and data communication equipment, and PCs/servers.

  10. Does the ADM1275-3ARQZ-R7 support multiple PMBus addresses?

    Yes, up to four unique PMBus addresses can be selected based on the configuration of the ADR pin.

Product Attributes

Type:Hot Swap Controller, Monitor
Number of Channels:1
Internal Switch(s):No
Applications:General Purpose
Features:PMBus
Programmable Features:Auto Retry, Current Limit, Fault Timeout, Latched Fault, OVP, UVLO
Voltage - Supply:2.95V ~ 20V
Current - Output (Max):- 
Operating Temperature:-40°C ~ 85°C
Current - Supply:5 mA
Mounting Type:Surface Mount
Package / Case:20-SSOP (0.154", 3.90mm Width)
Supplier Device Package:20-QSOP
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Similar Products

Part Number ADM1275-3ARQZ-R7 ADM1275-1ARQZ-R7 ADM1275-2ARQZ-R7
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Active Active Active
Type Hot Swap Controller, Monitor Hot Swap Controller, Monitor Hot Swap Controller, Monitor
Number of Channels 1 1 1
Internal Switch(s) No No No
Applications General Purpose General Purpose General Purpose
Features PMBus PMBus Latched Fault, PMBus
Programmable Features Auto Retry, Current Limit, Fault Timeout, Latched Fault, OVP, UVLO Auto Retry, Current Limit, Fault Timeout, Latched Fault, OVP, UVLO Current Limit, Fault Timeout, OVP, UVLO
Voltage - Supply 2.95V ~ 20V 2.95V ~ 20V 2.95V ~ 20V
Current - Output (Max) - - -
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Current - Supply 5 mA 5 mA 5 mA
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 20-SSOP (0.154", 3.90mm Width) 20-SSOP (0.154", 3.90mm Width) 16-SSOP (0.154", 3.90mm Width)
Supplier Device Package 20-QSOP 20-QSOP 16-QSOP

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