LTC4215
LTC4215-2

RECOMMENDED FOR NEW DESIGNS

Hot Swap Controller with I²C Compatible Monitoring

Part Models: 12
1ku List Price: Starting From $4.48

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Part Details

Allows Safe Insertion into Live Backplane
8-Bit ADC Monitors Current and Voltage
I²C/SMBus Interface
Wide Operating Voltage Range: 2.9V to 15V
20μs (LTC4215) or 420μs (LTC4215-2) Circuit Breaker Timeout
dI/dt Controlled Soft-Start
High Side Drive for External N-Channel MOSFET
No External Gate Capacitor Required
Input Overvoltage/Undervoltage Protection
Optional Latch-off or Auto-Retry After Faults
Alerts Host After Faults
Inrush Current Limit with Foldback
Available in 24-Pin (4mm × 5mm) QFN Package
LTC4215 also available in 16-Lead Narrow SSOP Package

The LTC4215/LTC4215-2 Hot Swap^™ controllers allow a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, board supply voltage and inrush current are ramped up at an adjustable rate. An I²C interface and onboard ADC allow for monitoring of load current, voltage and fault status.

The device features adjustable foldback current limit and a soft-start pin that sets the dI/dt of the inrush current. An I²C interface may configure the part to latch-off or automatically restart after the LTC4215 detects a current limit fault.

The controller has additional features to interrupt the host when a fault has occurred, notify when output power is good, detect insertion of a load card, and power-up either automatically upon insertion or wait for an I²C command to turn on.

The LTC4215 has a 20μs circuit breaker filter for applications that require a fast fault response time and it defaults to latch-off after an overcurrent fault. The LTC4215-2 has an extended 420μs circuit breaker filter for applications where supply transients may exceed 20μs and it defaults to restart automatically after an overcurrent fault.


	Circuit Breaker Timeout	General Purpose Outputs
LTC4215	20μs	1
LTC4215-1	20μs	3
LTC4215-2	420μs	1
LTC4215-3	420μs	3

Applications

Live Board Insertion
Electronic Circuit Breakers
Computers, Servers
Platform Management

Part Models: 12
1ku List Price: Starting From $4.48

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
LTC4215CGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215CGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215CUFD#PBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215CUFD#TRPBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215CUFD-2#PBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215CUFD-2#TRPBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215IGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215IGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215IUFD#PBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215IUFD#TRPBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215IUFD-2#PBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4215IUFD-2#TRPBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking
		PCN24_0235_Form Material_Report Other Delta Qualification Matrix
LTC4215CGN#PBF	PRODUCTION
LTC4215CGN#TRPBF	PRODUCTION
LTC4215IGN#PBF	PRODUCTION
LTC4215IGN#TRPBF	PRODUCTION
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package
		PCN22_0235_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC4215CGN#PBF	PRODUCTION
LTC4215CGN#TRPBF	PRODUCTION
LTC4215IGN#PBF	PRODUCTION
LTC4215IGN#TRPBF	PRODUCTION
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG]
		PCN22_0066_Form Material_Report Delta Qualification Matrix
LTC4215CGN#PBF	PRODUCTION
LTC4215CGN#TRPBF	PRODUCTION
LTC4215IGN#PBF	PRODUCTION
LTC4215IGN#TRPBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Current Sense Amplifiers 1
LTC2990	RECOMMENDED FOR NEW DESIGNS	Quad I²C Voltage, Current and Temperature Monitor
I²C Isolators 1
LTM2883	PRODUCTION	SPI/Digital or I²C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
Low Voltage Hot Swap Controllers 1
LTC4280	RECOMMENDED FOR NEW DESIGNS	Hot Swap Controller with I²C Compatible Monitoring

Tools & Simulations

LTspice 1

LTC4215 - Hot Swap Controllers

Models for the following parts are available in LTspice:

LTC4215
LTC4215-1
LTC4215-2
LTC4215-3

Linduino 3

LTpowerPlay®

LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

Open Tool

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.

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

Evaluation Kits

LTC4215 Hot Swap Controller with ADC (Requires DC590)

Buy Now View Details

Product Details

DC874A: Demo Board for the LTC4215 Hot Swap Controller with I²C Compatible Monitoring.

Resources

DC874A - Demo Manual
512.00K

DC874A - Schematic
40.00K

DC874A - Design File
759.00K

Reference Designs

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications