ADM1175
PRODUCTIONHot Swap Controller and Digital Power Monitor with Convert Pin
- Part Models
- 2
- 1ku List Price
- Starting From $3.89
Overview
- 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
- 10-lead MSOP
- Convert start pin (CONV)
- 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
- I2C fast mode-compliant interface (400 kHz maximum)
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 controlling 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.
Applications
- Power monitoring/power budgeting
- Central office equipment
- Telecommunication and data communication equipment
- PCs/servers
Documentation
Data Sheet 1
User Guide 2
Product Selector Card 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADM1175-1ARMZ-R7 | 10-Lead MSOP | ||
| ADM1175-2ARMZ-R7 | 10-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Mar 22, 2021 - 21_0001 Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP |
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| ADM1175-1ARMZ-R7 | PRODUCTION | |
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Oct 30, 2017 - 15_0176 Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines |
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| ADM1175-1ARMZ-R7 | PRODUCTION | |
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May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products |
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| ADM1175-1ARMZ-R7 | PRODUCTION | |
| ADM1175-2ARMZ-R7 | PRODUCTION | |
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Nov 16, 2009 - 06_0157 Qualification of the 8" H6 Thin Film BiPolar Wafer Fab Process at Analog Devices, Limerick, Ireland |
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| ADM1175-1ARMZ-R7 | PRODUCTION | |
| ADM1175-2ARMZ-R7 | PRODUCTION | |
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Jun 22, 2010 - 09_0217 Addition of Jiangsu Changjiang Electronics Technology (JCET) as an alternate Assembly source for 10L MSOP and 14L TSSOP,and Advanced Semiconductor Engineering (ASE) for 10L MSOP and 14L SOICN package. |
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| ADM1175-2ARMZ-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 1
ADM1175-78 & ADM1191-92 Evaluation Software
Can't find the software or driver you need?
Evaluation Kits
ADM1175 Evaluation Board