LTC4242

RECOMMENDED FOR NEW DESIGNS

LTC4242

Dual Slot Hot Swap Controller for PCI Express

RECOMMENDED FOR NEW DESIGNS

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Part Models 8

1ku List Price Starting From $3.96

Features

Allows Live Insertion into PCI Express^® Backplane
Controls Two Independent PCI Express Slots
Independent Control of Main and Auxiliary Supplies
20V Rating for 12V Supply Input Pins
Integrated 0.25Ω AUX Switches
Limits Fault Current in ≤1µs
Force On Test Mode
Adjustable Supply Voltage Power-Up Rate
High Side Drivers for N-Channel MOSFETs
Thermal Shutdown Protection
Available in 38-Lead QFN and 36-Lead SSOP Packages

Additional Details

The LTC4242 Hot Swap^™ controller allows safe board insertion and removal for two independent slots on a PCI Express backplane. External N-channel transistors control the 12V and 3.3V supplies while integrated switches control the 3.3V auxiliary supplies. Both 12V and 3.3V supplies can be ramped up at an adjustable rate. Dual level circuit breakers and fast active current limiting protect all supplies against overcurrent faults.

A supply filter at the V_CC pin allows the LTC4242 to endure supply transients. The EN input detects the presence of a card in the PCI Express slot. The FAULT and AUXFAULT outputs alert the system of overcurrent conditions on the main and auxiliary supplies, respectively. PGOOD and AUXPGOOD outputs indicate proper main and auxiliary supply outputs.

Applications

PCI Express-Based PC and Servers
Hot Swap Application for Triple Supply Systems

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 8

1ku List Price Starting From $3.96

Technical Documents 3

LTC4242: Dual Slot Hot Swap Controller for PCI Express Data Sheet 11/21/2007

R536 Reliability Data 03/26/2018

DC1054A/B - Demo Manual 09/24/2009

Reference Materials 1

Hot Swap Controllers 08/02/2023

Design Resources 8

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
LTC4242CG#PBF	36-Lead SSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4242CG#TRPBF	36-Lead SSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4242CUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4242CUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4242IG#PBF	36-Lead SSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4242IG#TRPBF	36-Lead SSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4242IUHF#PBF	38-Lead QFN (5mm x 7mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4242IUHF#TRPBF	38-Lead QFN (5mm x 7mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC4242CG#PBF
Pin/Package Drawing
36-Lead SSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC4242CG#TRPBF
Pin/Package Drawing
36-Lead SSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC4242CUHF#PBF
Pin/Package Drawing
38-Lead QFN (5mm x 7mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC4242CUHF#TRPBF
Pin/Package Drawing
38-Lead QFN (5mm x 7mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC4242IG#PBF
Pin/Package Drawing
36-Lead SSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC4242IG#TRPBF
Pin/Package Drawing
36-Lead SSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC4242IUHF#PBF
Pin/Package Drawing
38-Lead QFN (5mm x 7mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTC4242IUHF#TRPBF
Pin/Package Drawing
38-Lead QFN (5mm x 7mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

Filter by Model

Part Models

Product Lifecycle

PCN

Nov 18, 2019

- 19_0266

Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC

LTC4242CG#PBF

PRODUCTION

LTC4242CG#TRPBF

PRODUCTION

LTC4242IG#PBF

PRODUCTION

LTC4242IG#TRPBF

PRODUCTION

pdf

PCN19_0266_Form

xls

Material_Report

Detailed Parts List

Filter by Model

Part Models

Product Lifecycle

PCN

Nov 18, 2019

- 19_0266

Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC

LTC4242CG#PBF

PRODUCTION

LTC4242CG#TRPBF

PRODUCTION

LTC4242IG#PBF

PRODUCTION

LTC4242IG#TRPBF

PRODUCTION

pdf

PCN19_0266_Form

xls

Material_Report

Detailed Parts List

Companion Parts 2

Parts	Product Life Cycle	Description
PCI Hot Swap Controllers2
LTC4245	LAST TIME BUY	Multiple Supply Hot Swap Controller with I²C Compatible Monitoring
LTC4244	PRODUCTION	Rugged, CompactPCI Bus Hot Swap Controllers

DC1054A/B

DC1054A with DC1054B | LTC4242 Dual PCI Express Hot Swap Controller

DC1054A/B

DC1054A with DC1054B | LTC4242 Dual PCI Express Hot Swap Controller

Buy Now View Details

Product Detail

DC1054A/B: Demo Board for the LTC4242 Dual Slot Hot Swap Controller for PCI Express.

Resources

ZIP

DC1054A/B - Design File

1.00M

PDF

DC1054A/B - Schematic

51.00K

PDF

DC1054A/B - Demo Manual

517.00K

DC1054A/B

DC1054A with DC1054B | LTC4242 Dual PCI Express Hot Swap Controller

LTspice 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.