The ADM4210 is a hot swap controller in a 6-lead TSOT package. It controls supply rails from 2.7 V to 16.5 V and allows protected board removal and insertion to a live backplane. It also features an external sense resistor for adjustable analog current limit with circuit breaker, peak fault current limited with fast response, 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 insertion and removal of printed‑circuit boards on a live backplane. It uses an external N‑channel MOSFET and a sense resistor to monitor load current, and an internal charge pump to drive the MOSFET gate. The device includes undervoltage lockout, over‑current protection, and optional automatic retry or latch‑off operation.
Key features include a wide operating voltage range (2.7 V‑16.5 V), adjustable analog current limit via an external sense resistor, fast fault response, and a low‑profile 6‑lead TSOT package. Two variants are offered: ADM4210‑1 with automatic retry and ADM4210‑2 with latch‑off fault handling.
| Operating Voltage Range (VEE) | 2.7 V to 16.5 V |
|---|---|
| Supply Current (typical) | 0.65 mA to 3.5 mA |
| Package Type | 6‑lead TSOT |
The ADM4210 operates with a supply voltage ranging from 2.7 V to 16.5 V.
When an over‑current condition is detected, the device reduces the gate voltage of the external N‑channel MOSFET, limiting the current through the sense resistor.
The ADM4210‑1 provides automatic retry after an over‑current fault, while the ADM4210‑2 latches off and requires a reset via the ON‑CLR pin.