LTC4229

RECOMMENDED FOR NEW DESIGNS

LTC4229

Ideal Diode and Hot Swap Controller

RECOMMENDED FOR NEW DESIGNS

Diode FET Protects OutputVoltage from Input Brownout slide

Diode FET Protects OutputVoltage from Input Brownout

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Part Models 8

1ku List Price Starting From $3.54

Features

Ideal Diode and Inrush Current Control for Redundant Supplies
Low Loss Replacement for Power Schottky Diode
Protects Output Voltage from Input Brownouts
Allows Safe Hot Swapping from a Live Backplane
2.9V to 18V Operating Range
Controls Back-to-Back N-Channel MOSFETs
Limits Peak Fault Current in ≤1μs
Adjustable Current Limit with Foldback
Adjustable Start-Up and Current Limit Fault Delay
0.5μs Ideal Diode Turn-On and Turn-Off Time
Undervoltage and Overvoltage Protection
Status, Fault and Power Good Outputs
Pin Selectable Latch Off or Automatic Retry After Fault
24-Lead 4mm × 5mm QFN and SSOP Packages

Additional Details

The LTC4229 offers ideal diode and Hot Swap^™ functions for a power rail by controlling two external N-channel MOSFETs. The MOSFET acting as an ideal diode replaces a high power Schottky diode and the associated heat sink, saving power and board area. The Hot Swap MOSFET control allows a board to be safely inserted and removed from a live backplane by limiting inrush current. The supply output is also protected against short-circuit faults with a fast acting foldback current limit and electronic circuit breaker.

The LTC4229 regulates the forward voltage drop across the external MOSFET to ensure smooth current transfer in diode-OR applications. The ideal diode turns on quickly to reduce the load voltage droop during supply switchover. If the input supply fails or is shorted, a fast turn-off minimizes reverse-current transients.

The LTC4229 provides adjustable start-up delay, undervoltage and overvoltage protection, and reports fault and power good status for the supply. It can be configured for latch off or automatic retry after a fault.

Applications

Redundant Power Supplies
Supply Holdup
High Availability Systems and Servers
Telecom and Network Infrastructure
Power Prioritizer

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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 $3.54

Technical Documents 3

LTC4229: Ideal Diode and Hot Swap Controller Data Sheet 08/28/2013

R536 Reliability Data 03/26/2018

DC2060A - Demo Manual 11/25/2013

Reference Materials 2

Hot Swap Controllers 08/02/2023

Ideal Diodes and Prioritizers 06/08/2018

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
LTC4229CG#PBF	24-Lead SSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4229CG#TRPBF	24-Lead SSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4229CUFD#PBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4229CUFD#TRPBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4229IG#PBF	24-Lead SSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4229IG#TRPBF	24-Lead SSOP	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4229IUFD#PBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTC4229IUFD#TRPBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTC4229CG#PBF
Pin/Package Drawing
24-Lead SSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC4229CG#TRPBF
Pin/Package Drawing
24-Lead SSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC4229CUFD#PBF
Pin/Package Drawing
24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC4229CUFD#TRPBF
Pin/Package Drawing
24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC4229IG#PBF
Pin/Package Drawing
24-Lead SSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC4229IG#TRPBF
Pin/Package Drawing
24-Lead SSOP
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC4229IUFD#PBF
Pin/Package Drawing
24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTC4229IUFD#TRPBF
Pin/Package Drawing
24-Lead QFN (4mm x 5mm x 0.75mm 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

Aug 6, 2022

- 22_0171

Laser Top Mark Conversion for SSOP Packages Assembled in PNG

LTC4229CG#PBF

PRODUCTION

LTC4229CG#TRPBF

PRODUCTION

LTC4229IG#PBF

PRODUCTION

LTC4229IG#TRPBF

PRODUCTION

pdf

PCN22_0171_Form

xls

Material_Report

xlsm

Delta Qualification Matrix

Filter by Model

Part Models

Product Lifecycle

PCN

Aug 6, 2022

- 22_0171

Laser Top Mark Conversion for SSOP Packages Assembled in PNG

LTC4229CG#PBF

PRODUCTION

LTC4229CG#TRPBF

PRODUCTION

LTC4229IG#PBF

PRODUCTION

LTC4229IG#TRPBF

PRODUCTION

pdf

PCN22_0171_Form

xls

Material_Report

xlsm

Delta Qualification Matrix

Companion Parts 2

Parts	Product Life Cycle	Description
PowerPath, Ideal Diodes, and Load Switches2
LTC4228-1 LTC4228-2		Dual Ideal Diode and Hot Swap Controller
LTC4227	RECOMMENDED FOR NEW DESIGNS	Dual Ideal Diode and Single Hot Swap Controller

DC2060A

LTC4229IUFD Demo Board: Single Ideal Diode and Hot Swap Controller

DC2060A

LTC4229IUFD Demo Board: Single Ideal Diode and Hot Swap Controller

Buy Now View Details

Product Detail

DC2060A: Demo Board for LTC4229 Ideal Diode and Hot Swap Controller.

Resources

PDF

DC2060A - Demo Manual

271.00K

PDF

DC2060A - Schematic

48.00K

ZIP

DC2060A - Design Files

981.00K

DC2060A

LTC4229IUFD Demo Board: Single Ideal Diode and 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.