The ADM1176 is a hot swap controller and I2C power monitor that allows safe board insertion and removal from a live backplane. It can control supply voltages from 3.15 V to 16.5 V and features a precision current sense amplifier, precision voltage input, 12-bit 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, I2C fast mode-compliant interface (400 kHz maximum) and 10-lead MSOP package.
The ADM1176 is an integrated hot‑swap controller that monitors current and voltage with an on‑chip 12‑bit ADC and communicates via a PC‑compatible I²C interface. It limits inrush current by controlling an external N‑channel FET and includes programmable timing, automatic retry, and latch‑off features.
The device operates from 3.15 V to 16.5 V, supports up to 16 I²C addresses, and is supplied in a 10‑lead MSOP package. Detailed specifications, pin functions, and typical performance curves are provided for designers.
| Operating Voltage Range (VCC) | 3.15 V to 16.5 V |
|---|---|
| Supply Current | 1.7 mA to 25 mA |
| Undervoltage Lockout (UVLO) | 2.8 V |
| ON Pin Rising Threshold | 1.26 V to 1.34 V |
| ADC Resolution | 12‑bit |
| Maximum I²C Addresses | 16 |
| Package | 10‑lead MSOP |
The device operates from 3.15 V to 16.5 V.
Up to 16 unique addresses can be set using the two address pins.
It is supplied in a 10‑lead MSOP package.
It includes a 12‑bit ADC for current and voltage readback.