This document describes the ADM1175 hot swap controller and digital power monitor. The product allows safe board insertion and removal from a live backplane, controls supply voltages from 3.15V to 16.5V, features a precision current sense amplifier and voltage input, a 12-bit ADC for current and voltage readback, an adjustable analog current limit, fast response limits peak fault current, and other characteristics.
The ADM1175 hot‑swap controller and digital power monitor provides safe board insertion and removal from a live backplane. It measures current and voltage with an on‑chip 12‑bit ADC and controls an external N‑channel FET to limit inrush current.
Key features include a supply voltage range of 3.15 V‑16.5 V, programmable timing via the TIMER pin, up to four I²C addresses, and protection functions such as undervoltage lockout and fast over‑current response. The device is offered in a 10‑lead MSOP package.
| Operating Voltage Range (VCC) | 3.15 V to 16.5 V |
|---|---|
| Supply Current (typical) | 25 mA |
| Undervoltage Lockout (VUVLO) | 2.8 V |
| ADC Resolution | 12‑bit |
| Package | 10‑lead MSOP |
| Absolute Maximum Rating – VCC Pin | 20 V |
| Thermal Resistance (MSOP) | 137.5 °C/W |
It operates from 3.15 V up to 16.5 V.
Up to four unique I²C addresses can be created depending on the ADR pin connections.
The I²C interface supports a clock frequency up to 400 kHz.