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 swi...
ADM4210: 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 b...
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Parameter | Rating |
VCC Pin | −0.3 V to +20 V |
SENSE Pin | −0.3 V to +20 V |
VCC − SENSE | ±5 V |
TIMER Pin | −0.3 V to (VCC + 0.3 V) |
ON (ON-CLR) Pin | −0.3 V to +20 V |
GATE Pin | −0.3 V to (VCC + 11 V) |
Storage Temperature Range | −65°C to +125°C |
Operating Temperature Range | −40°C to +85°C |
Lead Temperature (10 sec) | 300°C |
Junction Temperature | 150°C |
The ADM4210 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 cap 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 ADM4210 operates with a supply voltage ranging from 2.7 V to 16.5 V.
The ADM4210 is available in two options: the 1 with automatic retry for overcurrent fault and the 2 with latch off for an overcurrent fault. Toggling the ON (ON-CLR) pin resets a latched fault. The ADM4210 is packaged in a 6-lead TSOT.