LTC4211

RECOMMENDED FOR NEW DESIGNS

Hot Swap Controller with Multifunction Current Control

Part Models: 12
1ku List Price: Starting From $2.72

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Overview

Allows Safe Board Insertion and Removal from a Live Backplane
Controls Supply Voltages from 2.5V to 16.5V
Programmable Soft-Start with Inrush Current Limiting, No External Gate Capacitor Required
Faster Turn-Off Time Because No External Gate Capacitor is Required
Dual Level Overcurrent Fault Protection
Programmable Response Time for Overcurrent Protection (MS)
Programmable Overvoltage Protection (MS)
Automatic Retry or Latched Mode Operation (MS)
High Side Drive for an External N-Channel FET
User-Programmable Supply Voltage Power-Up Rate
FB Pin Monitors V_OUT and Signals RESET
Glitch Filter Protects Against Spurious RESET Signal

The LTC4211 is a Hot Swap controller that allows a board to be safely inserted and removed from a live backplane. An internal highside switch driver controls the gate of an external N-channel MOSFET for supply voltages ranging from 2.5V to 16.5V. The LTC4211 provides soft-start and in rush current limiting during the start-up period which has a programmable duration.

Two on-chip current limit comparators provide dual level overcurrent circuit breaker protection. The slow comparator trips at V_CC – 50mV and activates in 20µs (or programmed by an external filter capacitor, MS only). The fast comparator trips at V_CC – 150mV and typically responds in 300ns.

The FB pin monitors the output supply voltage and signals the RESET output pin. The ON pin signal turns the chip on and off and can also be used for the reset function. The MS package has FAULT and FILTER pins to provide additional functions like fault indication, autoretry or latch-off modes, programmable current limit response time and programmable overvoltage protection using an external Zener diode clamp.

Applications

Electronic Circuit Breaker
Hot Board Insertion and Removal (Either On Backplane or On Removable Card)
Industrial High Side Switch/Circuit Breaker

Part Models: 12
1ku List Price: Starting From $2.72

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC4211CMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211CMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211CMS8#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211CMS8#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211IMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211IMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211IMS8#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211IMS8#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211IS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4211IS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0130_Form Material_Report
LTC4211CMS#PBF	PRODUCTION
LTC4211CMS#TRPBF	PRODUCTION
LTC4211IMS#PBF	PRODUCTION
LTC4211IMS#TRPBF	PRODUCTION
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0128_Form Material_Report
LTC4211CMS8#PBF	PRODUCTION
LTC4211CMS8#TRPBF	PRODUCTION
LTC4211IMS8#PBF	PRODUCTION
LTC4211IMS8#TRPBF	PRODUCTION
Nov 14, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)
		PCN22_0254_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC4211CS8#PBF	PRODUCTION
LTC4211CS8#TRPBF	PRODUCTION
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0026_Form Material_Report Delta Qualification Matrix
LTC4211CS8#PBF	PRODUCTION
LTC4211CS8#TRPBF	PRODUCTION
LTC4211IS8#PBF	PRODUCTION
LTC4211IS8#TRPBF	PRODUCTION
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC4211IS8#PBF	PRODUCTION
LTC4211IS8#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice 1

LTC4211 Demo Circuit - Single Channel 5V, 5A Hot Swap Controller

Models for the following parts are available in LTspice:

LTC4211

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

LTC4211CMS Demo Board | 7A Electronic Circuit Breaker and Hot Swap Controller

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Product Details

Demonstration circuit 536B is a hot swap controller with multifunction current control featuring the LTC4211. The DC536B-A is configured to operate with up to 7A load and DC536B-B up to 20A load.