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LTC4211IS8

Name: LTC4211IS8
Rating: 4.7 (12 reviews)

IC CTRLR HOTSWAP CURR CTRL 8SOIC

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規格

Part Status	Obsolete
Base Product Number	LTC4211
Type	Hot Swap Controller
Number of Channels	1
Internal Switch(s)	No
Applications	General Purpose
Features	Latched Fault
Programmable Features	Circuit Breaker, Current Limit, Fault Timeout, OVP, UVLO
Voltage - Supply	2.5V ~ 16.5V
Operating Temperature	-40°C ~ 85°C
Current - Supply	1 mA
Mounting Type	Surface Mount
Package	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SO
Packaging	Tube

概述

Description

LTC4211IS8 is an 8‑pin hot‑swap controller from Linear Technology (now ADI). It protects a live power rail by driving an external MOSFET to limit inrush and guard against faults.
Key points:
- High‑side controller with adjustable current limit (set by a sense resistor) to protect against short circuits and inrush.
- Soft‑start to limit surge when a supply is connected.
- Protection features: reverse‑polarity protection, overvoltage/undervoltage detection, and a fault latch with a status/output indication.
- External MOSFET drive: the controller gates a pass device to regulate current and protect the system.
- Fault signaling and latch reset on power cycle or fault clearance.
IS8 suffix:
- Indicates the package option: 8‑pin MSOP/SSOP (S8) style.
Typical uses:
- Hot‑swap and insertion protection for backplanes, servers, telecom power, and other live power rails; any design needing controlled inrush and fault protection on a live supply.

Features

LTC4211IS8 features (concise):
- Hot-swap controller for safe board insertion with external MOSFET drive
- Programmable current limit via sense resistor (Ilimit)
- Soft-start to limit inrush current
- Overcurrent protection with fast current limit and fault latch
- UVLO/OV protection to guard against undervoltage and overvoltage
- Thermal shutdown with latch protection
- Reverse-current protection to prevent backfeeding
- Output discharge path on fault or shutdown
- Fault/status reporting through open-drain pins (fault/power-good)
- Enable input for manual on/off control
- Small 8-pin IS8 package
(These summarize core capabilities; refer to the datasheet for exact electrical specs and pin details.)

Package

LTC4211IS8 uses an 8-pin Small Outline Integrated Circuit package (SO-8).

Pinout

- Pin count: 8 pins (IS8 package).
- Function: Hot-swap/current-limit controller for a power rail. It drives an external N-channel MOSFET to limit inrush and provide protection against overcurrent/short-circuit on the supply.

Manufacturer

Analog Devices, Inc. (the Linear Technology line; Linear Technology Corporation before its 2017 acquisition). It is an American multinational semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits.

Application

High-voltage hot-swap controller for protecting and sequencing power rails. Applications: servers, telecom/datacom equipment, industrial controllers, and data-storage systems. Features inrush current limiting, current-limit protection, undervoltage/overvoltage lockout, soft-start, and fault reporting to a microcontroller. Suitable for front-end supplies with N-channel MOSFETs, backplane hot-swap, and redundant (OR-ing) power architectures.