The ADM1177 is a hot swap controller and digital power monitor with soft start pin from Analog Devices. It allows safe board insertion and removal from a live backplane, and controls supply voltages from 3.15 V to 16.5 V. The device also has precision current sense amplifier, precision voltage input, 12-bit ADC for current and voltage readback, charge pumped gate drive, 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, soft start pin for reference adjustment and programming of initial current ramp rate, active-high ON pin, I2C® fast mode-compliant interface (400 kHz maximum) and 10-lead MSOP.
The Analog Devices ADM1177 is an integrated hot swap controller that offers digital current and voltage monitoring via an on-chip 12-bit analog-to-digital converter (ADC). It communicates through a PC interface to allow controllers to read current and voltage data. The device limits inrush current by controlling the gate voltage of an external N-channel FET.
| Operating Voltage Range | 3.15 V to 16.5 V |
|---|---|
| Supply Current | 25 mA (typical) |
| ADC Resolution | 12-bit |
| Package Type | 10-lead MSOP |
| Operating Temperature Range | -40°C to +85°C |
The SS pin gives control over the reference on the current sense amplifier and allows setting the profile of the initial current ramp.
It is used in power monitoring, central office equipment, telecommunication/data communication equipment, and PCs/servers.