ADM1276-3ACPZ-RL

ADM1276-3ACPZ-RL is Analog Devices’ hot‑swap protection/controller in the ADM1276 family. It protects a power rail during board insertion and faults by driving an external N‑channel MOSFET to limit inrush, control turn‑on, and shutdown on faults. It uses a sense resistor to set current limit, provides soft‑start, and includes protections such as undervoltage lockout, overvoltage, overcurrent/short‑circuit, plus fault/status reporting. It’s intended for high‑side protection on supply rails in systems like servers, storage, telecom, and industrial equipment, and it works with a suitable MOSFET and minimal external parts. The -RL suffix denotes RoHS, tape‑and‑reel packaging; ACPZ is the package code for this variant. For exact electrical specs (voltage range, current‑limit range, timing, and fault behavior) and the recommended application circuit, consult the ADM1276 datasheet and product page.

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Here are the key features of ADM1276-3ACPZ-RL:
- 1-channel high-side power switch with current-limit and thermal protection
- Adjustable current limit via external RT resistor
- Enable (ON/OFF) control
- Fault/Status output (open-drain) for OC/OT conditions
- Overcurrent protection with auto-retry (hiccup) and overtemperature protection
- Soft-start to limit inrush current
- Fully integrated MOSFET and protection circuitry
- Packaging: 8-lead LFCSP in tape-and-reel (RL), RoHS-compliant

Pin count: 28 pins (ACPZ package, RoHS lead-free, RL tape-and-reel).
Function: ADM1276-3ACPZ-RL is a 3-channel hot-swap controller with three integrated high-side switches, providing current limit, overcurrent protection, reverse-polarity protection, and fault/status reporting for three independent power rails.

- Manufacturer: Analog Devices, Inc. (ADI)
- What kind of company: A multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits (e.g., power management, data converters, amplifiers). HQ in Norwood, MA, USA; publicly traded on NASDAQ (ticker: ADI).

ADM1276-3ACPZ-RL is a 3-channel hot-swap / power-distribution switch with programmable current limit, overcurrent/short‑circuit protection and fault reporting.
Applications include:
- Protecting and controlling three rails in hot‑insert/removal environments
- Server blades, PCIe backplanes, network/telecom line cards
- Storage arrays and other data-center equipment
- Industrial automation and multi-rail power-distribution systems
It supports inrush limiting, current monitoring, and fast fault response for multi‑rail boards.

Package type: Lead Frame Chip Scale Package (LFCSP). The -RL suffix indicates tape-and-reel packaging (Pb-free, RoHS-compliant).