ADM1172-2AUJZ-RL7

ADM1172 is a hot swap controller with power-fail comparator that safely enables a printed circuit board to be removed and inserted into 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 in a current-limiting mode of operation until it is shut down. The ON (ON-CLR active high) pin is the enable input for the device and can be used to monitor the input supply voltage. Application includes hot swap board insertion: line cards, raid systems, industrial high-side switches/circuit breakers, electronic circuit breakers.

• Operating voltage range from 2.7 to 16.5V (VCC=2.7V to 16.5V, TA=25°C)
• Typical supply current is 0.65mA (VCC=2.7V to 16.5V, TA=25°C)
• Typical undervoltage lockout is 2.525V (VCC=2.7V to 16.5V, TA=25°C)
• Threshold range from 1.22 to 1.38V (ON rising, VCC=2.7V to 16.5V, TA=25°C)
• Typical circuit breaker limit voltage is 50mV (VCB=(VCC – VSENSE), TA=25°C)
• Drive voltage range from 4.6 to 10V (VGATE − VCC, VCC=3.0V, TA=25°C)
• Typical threshold hysteresis is 10mV (VCC=2.7V to 16.5V, TA=25°C)
• 8-lead TSOT package
• Temperature range from -40°C to +85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party