ADM1178-2ARMZ-R7

ADM1178 is a integrated hot swap controller and current sense amplifier that offers digital current and voltage monitoring via an on-chip 12bit analog-to-digital converter (ADC), communicated through an I²C® interface. An internal current sense amplifier measures voltage across the sense resistor in the power path via the VCC pin and the SENSE pin. It limits the current through this resistor by controlling the gate voltage (via the GATE pin) of an external N-channel FET in the power path. The voltage across the sense resistor (and therefore the inrush current) is kept below a preset maximum. It protects the external FET by limiting the time that the maximum current runs through it. This current limit period is set by the value of the capacitor attached to the TIMER pin. It is used in application such as power monitoring/power budgeting, central office equipment, telecommunications and data communications equipment PCs/servers etc.

• Allows safe board insertion and removal from a live backplane
• Controls supply voltages from 3.15V to 16.5V
• Precision current sense amplifier, precision voltage input
• 12bit 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 ON pin, ALERTB output for overcurrent interrupt
• I²C fast mode-compliant interface (400KHz maximum)
• Operating temperature is -40°C to +85°C, package style is 10-lead MSOP

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