ADM1172-1AUJZ-RL7 Low Voltage Hot Swap Controllers by Analog Devices

Status: Production
Series: ADM1172
RoHS: Compliant
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The ADM1172 is a hot swap controller that safely enables a printed circuit board to be removed and inserted to a live backplane. This is achieved using an external N-channel power MOSFET with a current control loop that monitors the load current through a sense resistor. An internal charge pump is used to enhance the gate of the N-channel FET. When an overcurrent condition is detected, the gate voltage of the FET is reduced to limit the current flowing through the sense resistor. During an overcurrent condition, the TIMER pin capacitor determines the amount of time the FET remains at a current limiting mode of operation until it is shut down. The ON (ON-CLR) pin is the enable input for the device and can be used to monitor the input supply voltage. The ADM1172 operates with a supply voltage ranging from 2.7 V to 16.5 V.The ADM1172 also features a power-fail comparator. The voltage on the PFI pin is compared with an internal 0.6 V reference, and the output of this comparator is presented on the PFO pin. This device is available in two options: the ADM1172-1 with automatic retry for overcurrent fault and the ADM1172-2 with latch-off for an overcurrent fault. Toggling the ON (ON-CLR) pin resets a latched fault. The ADM1172 is packaged in an 8-lead TSOT.

Where to Buy

Prices starting from US$3.23

Distributor Stock
Logo for Newark Electronics
Newark Electronics
from US$3.44
2,990
in stock
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element14
from US$3.34
2,990
in stock
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Farnell
from US$3.23
2,990
in stock
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Logo for Analog Devices
Analog Devices
from US$3.31
1
in stock
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Features

Controls supply rails from 2.7 V to 16.5 V
Allows protected board removal and insertion to a live backplane
External sense resistor provides adjustable analog current limit with circuit breaker
Peak fault current limited with fast response
Charge pumped gate drive for external N-FET switch
Power-fail comparator
Automatic retry or latch-off during current fault 
Undervoltage lockout  
8-lead, TSOT package

Alternative Descriptions

Hot-Swap Ctrl, -40 To 85Deg C, Tsot-8 | Newark Electronics
HOT-SWAP CTRL, -40 TO 85DEG C, TSOT-8 | element14
Positive Hotswap PFI/PFO Auto | Analog Devices


Frequently Asked Questions

Where can I find additional details, specifications and documents for a ADM1172-1AUJZ-RL7?

Additional datasheets, footprints and schematics for ADM1172-1AUJZ-RL7 are listed on our Part Details page. You can also find images and similar parts to ADM1172-1AUJZ-RL7 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for ADM1172-1AUJZ-RL7 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view ADM1172-1AUJZ-RL7 price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does ADM1172-1AUJZ-RL7 fall under?

The ADM1172-1AUJZ-RL7 is listed under Low Voltage Hot Swap Controllers.

Can I view similar or alternative parts?

You can view similar parts to ADM1172-1AUJZ-RL7 when available in the Low Voltage Hot Swap Controllers range under the specifications section at the bottom of the details page.

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Is the ADM1172-1AUJZ-RL7 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for ADM1172-1AUJZ-RL7 have stock available?

Authorised distributors including Newark Electronics, element14, Farnell and Analog Devices have stock available or on a lead time for ADM1172-1AUJZ-RL7.

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