ADM1177-1ARMZ-R7

ADM1177 is an integrated hot swap controller that offers digital current and voltage monitoring via an on-chip, 12bit analogue-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. ADM1177 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 present maximum. It protects the external FET by limiting the time that the maximum current runs through it. Application includes power monitoring/power budgeting, central office equipment, telecommunications and data communications equipment, PCs/servers.

• Automatic retry version
• 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 analogue 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
• 10 lead MSOP package, operating temperature range from -40°C to +85°C

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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