ADM1075
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ADM1075

−48 V Hot Swap Controller and Digital Power Monitor with PMBus Interface

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warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $7.75
Features
  • Constant power foldback for FET SOA protection
  • Precision (<1.0%) current and voltage measurement
  • Controls inrush and faults for negative supply voltages
  • Suitable for wide input range due to internal shunt regulator
  • 25 mV/50 mV full-scale sense voltage
  • Fine tune current limit to allow use of standard sense resistor
  • Soft start inrush current limit profiling
  • 1% accurate UVH and OV pins, 1.5% accurate UVL pin
  • PMBus interface for control, telemetry, and fault recording
  • 28-lead TSSOP
  • -40°C to 105°C junction temperature (TJ) operating range
Additional Details
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The ADM1075 is a full feature, negative voltage, hot swap controller with constant power foldback and high accuracy digital current and voltage measurement that allows boards to be safely inserted and removed from a live -48 V backplane. The part provides precise and robust current limiting and protection against both transient and nontransient short circuits and overvoltage and undervoltage conditions. The ADM1075 typically operates from a negative voltage of -35 V to -80 V and, due to shunt regulation, has excellent voltage transient immunity. The operating range of the part is flexible due to the shunt regulator, and the part can be powered directly by a 10 V rail to save shunt power dissipation (see the Powering the ADM1075 section for more details).

A full-scale current limit of 25 mV or 50 mV can be selected by choosing the appropriate model. The maximum current limit is set by the combination of the sense resistor, RSENSE, and the input voltage on the ISET pin, using external resistors. This allows fine tuning of the trip voltage so that standard sense resistors can be used. Inrush current is limited to this programmable value by controlling the gate drive of an external N-channel FET. A builtin soft start function allows control of the inrush current profile by an external capacitor on the soft start (SS) pin.

Refer to the datasheet for more information.

PRODUCT HIGHLIGHTS

  1. Constant Power Foldback.
    Maximum FET power set by a PLIM resistor divider. This eases complexity when designing to maintain FET SOA.
  2. Adjustable Current Limit.
    The current limit is adjustable via the ISET pin allowing for the use of a standard value sense resistor.
  3. 12-Bit ADC.
    Accurate voltage, current, and power measurements. Also enables calculation of energy consumption over time.
  4. PMBus Interface.
    PMBus fast mode compliant interface used to read back status and data registers and set warning and fault limits.
  5. Fault Recording.
    Latched status registers provide useful debugging information to help trace faults in high reliability systems.
  6. Built-In Soft Start.
    Soft start capacitor controls inrush current profile with di/dt control.

APPLICATIONS

  • Telecommunication and data communication equipment
  • Central office switching
  • -48 V distributed power systems
  • Negative power supply control
  • High availability servers
Part Models 8
1ku List Price Starting From $7.75

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADM1075-1ACPZ
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ADM1075-1ACPZ-RL7
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ADM1075-1ARUZ
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ADM1075-1ARUZ-RL7
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ADM1075-2ACPZ
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ADM1075-2ACPZ-RL7
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ADM1075-2ARUZ
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ADM1075-2ARUZ-RL7
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Filter by Model

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Product Lifecycle

PCN

Jul 5, 2018

- 16_0235

Assembly Transfer to ASE Korea and Test Transfer to STATS ChipPAC Singapore of Select LFCSP Parts.

ADM1075-1ACPZ

PRODUCTION

ADM1075-1ACPZ-RL7

PRODUCTION

ADM1075-2ACPZ

PRODUCTION

ADM1075-2ACPZ-RL7

PRODUCTION

Oct 18, 2016

- 16_0036

Assembly Relocation to Stats ChipPAC Jiangyin and Test Transfer to Stats ChipPAC Singapore of Select LFCSP Products

Aug 6, 2014

- 13_0230

Assembly and Test Transfer of Select 3.5x3.5, 4x3, 4x4, and 5x5mm LFCSP Products to STATS ChipPAC China

ADM1075-1ACPZ

PRODUCTION

ADM1075-1ACPZ-RL7

PRODUCTION

ADM1075-2ACPZ

PRODUCTION

ADM1075-2ACPZ-RL7

PRODUCTION

Apr 5, 2021

- 21_0035

Amkor Philippines as an Alternate Site for TSSOP_4.4

ADM1075-1ARUZ

PRODUCTION

ADM1075-1ARUZ-RL7

PRODUCTION

ADM1075-2ARUZ

PRODUCTION

ADM1075-2ARUZ-RL7

PRODUCTION

Jan 20, 2012

- 11_0218

Halogen Free Material Change for Certain TSSOP Products at Carsem

ADM1075-1ARUZ

PRODUCTION

ADM1075-1ARUZ-RL7

PRODUCTION

ADM1075-2ARUZ

PRODUCTION

ADM1075-2ARUZ-RL7

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jul 5, 2018

- 16_0235

arrow down

Assembly Transfer to ASE Korea and Test Transfer to STATS ChipPAC Singapore of Select LFCSP Parts.

ADM1075-1ACPZ

PRODUCTION

ADM1075-1ACPZ-RL7

PRODUCTION

ADM1075-2ACPZ

PRODUCTION

ADM1075-2ACPZ-RL7

PRODUCTION

Oct 18, 2016

- 16_0036

arrow down

Assembly Relocation to Stats ChipPAC Jiangyin and Test Transfer to Stats ChipPAC Singapore of Select LFCSP Products

Aug 6, 2014

- 13_0230

arrow down

Assembly and Test Transfer of Select 3.5x3.5, 4x3, 4x4, and 5x5mm LFCSP Products to STATS ChipPAC China

ADM1075-1ACPZ

PRODUCTION

ADM1075-1ACPZ-RL7

PRODUCTION

ADM1075-2ACPZ

PRODUCTION

ADM1075-2ACPZ-RL7

PRODUCTION

Apr 5, 2021

- 21_0035

arrow down

Amkor Philippines as an Alternate Site for TSSOP_4.4

ADM1075-1ARUZ

PRODUCTION

ADM1075-1ARUZ-RL7

PRODUCTION

ADM1075-2ARUZ

PRODUCTION

ADM1075-2ARUZ-RL7

PRODUCTION

Jan 20, 2012

- 11_0218

arrow down

Halogen Free Material Change for Certain TSSOP Products at Carsem

ADM1075-1ARUZ

PRODUCTION

ADM1075-1ARUZ-RL7

PRODUCTION

ADM1075-2ARUZ

PRODUCTION

ADM1075-2ARUZ-RL7

PRODUCTION

Evaluation Kit

Evaluation Kits 1

EVAL-ADM1075

ADM1075 Evaluation Board

Tools & Simulations

Tools & Simulations 1

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