ADM1175

Features: ·Allows safe board insertion and removal from a live backplane·Controls supply voltages from 3.15 V to 16.5 V·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 curren...

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ADM1175 Picture
SeekIC No. : 004275583 Detail

ADM1175: Features: ·Allows safe board insertion and removal from a live backplane·Controls supply voltages from 3.15 V to 16.5 V·Precision current sense amplifier·Precision voltage input·12-bit ADC for curre...

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Part Number:
ADM1175
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/29

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Product Details

Description



Features:

·Allows safe board insertion and removal from a live backplane
·Controls supply voltages from 3.15 V to 16.5 V
·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
·Active-high and active-low ON/ONB pin options
·Convert start pin (CONV)
·I2C® fast mode-compliant interface (400 kHz maximum)
·10-lead MSOP





Application

·Power monitoring/power budgeting
·Central office equipment
·Telecommunication and data communication equipment
·PCs/servers





Pinout

ADM1175 Diagram

  Connection Diagram




Specifications

Other Inputs CONV Pin
Package 10-Lead MSOP
UV & OV Detection ON pin (UV),ONB pin (OV)
Digital V & I Readback I2C Interface,w/ 4 Addreses
Operating Range(V) 3.15 to 16.5


Parameter Rating
VCC Pin 20 V
SENSE Pin 20 V
TIMER Pin −0.3 V to +6 V
ON/ONB Pin −0.3 V to +20 V
CONV Pin −0.3 V to +6 V
GATE Pin 30 V
SDA Pin, SCL Pin −0.3 V to +7 V
ADR Pin −0.3 V to +6 V
Storage Temperature Range −65°C to +125°C
Operating Temperature Range −40°C to +85°C
Lead Temperature Range (Soldering, 10 sec) 300°C
Junction Temperature 150°C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.




Description

The ADM1175 is an integrated hot swap controller and current sense amplifier that 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 senses voltage across the sense resistor in the power path via the VCC pin and the SENSE pin.

The ADM1175 limits the current through this resistor by control-ling the gate voltage of an external N-channel FET in the power path, via the GATE pin. The sense voltage (and, therefore, the inrush current) is kept below a preset maximum.

The ADM1175 protects the external FET by limiting the time that it spends with maximum current running through it. This current limit period is set by the choice of capacitor attached to the TIMER pin. Additionally, the device provides protection from overcurrent events that may occur once the hot swap event is complete. In the case of a short-circuit event, the current in the sense resistor exceeds an overcurrent trip threshold, and the FET is switched off immediately by pulling down the GATE pin.

A 12-bit ADC can measure the current seen in the sense resistor, as well as the supply voltage on the VCC pin. An industry-standard I2C interface allows a controller to read current and voltage data from the ADC. Measurements can be initiated by an I2C command or via the convert (CONV) pin. The CONV pin is especially useful for synchronizing reads on multiple ADM1175 devices. Alternatively, the ADC can run continuously, and the user can read the latest conversion data whenever it is required. Up to four unique I2C addresses can be created, depending on the way the ADR pin is connected.

The ADM1175 is packaged in a 10-lead MSOP.






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