ADM4210 is a hot swap controller that safely enables a printed circuit board to be removed and inserted to a live backplane. This is achieved using an external N-channel power switch. The controller has various features, including adjustable analog current limit with circuit breaker, fast response peak fault current limit, charge pumped gate drive for external N-FET switch, automatic retry or latch-off during current fault, and undervoltage lockout.
The ADM4210 is a hot‑swap controller that enables safe removal and insertion of a PCB on a live backplane. It works with an external N‑channel MOSFET and uses an external sense resistor to monitor load current, providing adjustable analog current limiting and a circuit‑breaker function. The device operates from 2.7 V to 16.5 V and includes features such as automatic retry or latch‑off, undervoltage lockout, and a charge‑pumped gate driver.
The controller is supplied in a 6‑lead TSOT package and is pin‑compatible with LTC4210‑1/2. Variants ADM4210‑1 and ADM4210‑2 differ in fault‑handling behavior (automatic retry vs. latch‑off). The datasheet includes specifications, absolute maximum ratings, thermal characteristics, pin descriptions, and typical performance graphs.
| Operating Voltage Range (VEE) | 2.7 V to 16.5 V |
|---|---|
| Supply Current (typical) | 3.5 mA |
| Package Type | 6‑lead TSOT |
| Maximum Operating Temperature | +85 °C |
The device operates from 2.7 V up to 16.5 V.
It is supplied in a 6‑lead TSOT package.
ADM4210‑1 provides automatic retry after an over‑current fault, while ADM4210‑2 latches off and requires a reset.