ADM1177 is a hot-swap controller and digital power monitor with soft start pin from Analog Devices. It has a maximum voltage of 16.5V, 12-bit ADC and current and voltage readback functions. It is used in power monitoring/power budgeting, central office equipment, telecommunications and data etc.
The ADM1177 hot‑swap controller provides safe board insertion and removal from a live backplane while monitoring supply voltage and current. It features a precision current‑sense amplifier, a 12‑bit ADC for voltage and current read‑back, and a PC‑compatible I²C interface that supports up to four unique addresses.
The device is supplied in a 10‑lead MSOP package and includes pins for voltage sense, gate drive, soft‑start, timer control and I²C communication. Key specifications include an operating voltage range of 3.15 V to 16.5 V, supply current of 1.7 mA to 25 mA, and a maximum I²C clock frequency of 400 kHz.