This document provides detailed information on the ADM1073, including its features, characteristics, etc.
The ADM1073 is a full‑feature, negative‑voltage hot‑swap controller designed for -48 V backplane systems. It offers precise inrush current limiting, programmable over‑ and undervoltage thresholds, and a soft‑start function that can be adjusted with external components. The device includes a PWM retry scheme, latch‑shutdown protection, and dedicated pins for power‑good, shutdown, and restart control.
The handbook contains detailed specifications such as voltage ranges, gate drive limits, and timing parameters, as well as pin‑out diagrams, typical performance curves, and application notes for telecom, server, and storage equipment. Absolute maximum ratings, thermal characteristics, and ESD precautions are also documented.
| Maximum Voltage Range | -200 V to -48 V to -18 V |
|---|---|
| Typical Operating Voltage Range | -80 V to -48 V to -35 V |
| Maximum Gate Voltage | 11.5 V |
| Number of Consecutive PWM Retry Cycles | 7 |
| Continuous Short‑Circuit Time before Latched Shutdown | 0.6 s |
The typical operating voltage range is –80 V to –48 V to –35 V.
The device allows up to 7 consecutive PWM retry cycles.
The PWRGD open‑drain output signals when the hot‑swap operation is complete.
The SHDN pin is a level‑triggered input used for manual device shutdown and reset.