LTC4227
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4227

Dual Ideal Diode and Single Hot Swap Controller

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 24
1ku List Price Starting From $4.09
Features
  • Power Path and Inrush Current Control for Redundant Supplies
  • Low Loss Replacement for Power Schottky Diodes
  • Allows Safe Hot Swapping from a Live Backplane
  • 2.9V to 18V Operating Range
  • Controls N-Channel MOSFETs
  • Limits Peak Fault Current in ≤1μs
  • 0.5μs Ideal Diode Turn-On and Reverse Turn-Off Time
  • Adjustable Current Limit with Circuit Breaker
  • Smooth Switchover without Oscillation
  • Adjustable Current Limit Fault Delay
  • Fault and Power Status Output
  • 20-Lead 4mm × 5mm QFN and 16-Lead SSOP Packages
Additional Details
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The LTC4227 offers ideal diode-OR and Hot Swap functions for two power rails by controlling external Nchannel MOSFETs. MOSFETs acting as ideal diodes replace two high power Schottky diodes and the associated heat sinks, saving power and board area. A Hot Swap control MOSFET 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 current limit and internal timed circuit breaker.

The LTC4227 regulates the forward voltage drop across the MOSFETs to ensure smooth current transfer from one supply to the other without oscillation. The ideal diodes turn 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 LTC4227 allows turn-on/off control, and reports fault and power good status for the supply.

Part Overcurrent Fault Start-Up Delay
LTC4227-1 Latch Off 100ms
LTC4227-2 Retry 100ms
LTC4227-3 Latch Off 1.6ms
LTC4227-4 Retry 1.6ms

Applications

  • Redundant Power Supplies and Supply Holdup
  • Computer Systems and Servers
  • Telecom Networks
Part Models 24
1ku List Price Starting From $4.09

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4227CGN-1#PBF
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LTC4227CGN-1#TRPBF
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LTC4227CGN-2#PBF
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LTC4227CGN-2#TRPBF
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LTC4227CUFD-1#PBF
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LTC4227CUFD-1#TRPBF
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LTC4227CUFD-2#PBF
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LTC4227CUFD-2#TRPBF
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LTC4227CUFD-3#PBF
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LTC4227CUFD-3#TRPBF
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LTC4227CUFD-4#PBF
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LTC4227CUFD-4#TRPBF
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LTC4227IGN-1#PBF
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LTC4227IGN-1#TRPBF
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LTC4227IGN-2#PBF
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LTC4227IGN-2#TRPBF
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LTC4227IUFD-1#PBF
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LTC4227IUFD-1#TRPBF
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LTC4227IUFD-2#PBF
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LTC4227IUFD-2#TRPBF
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LTC4227IUFD-3#PBF
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LTC4227IUFD-3#TRPBF
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LTC4227IUFD-4#PBF
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LTC4227IUFD-4#TRPBF
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC4227CGN-1#PBF

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LTC4227CGN-1#TRPBF

PRODUCTION

LTC4227CGN-2#PBF

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LTC4227CGN-2#TRPBF

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LTC4227IGN-1#PBF

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LTC4227IGN-2#PBF

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LTC4227IGN-2#TRPBF

PRODUCTION

Apr 6, 2022

- 22_0066

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC4227CGN-1#PBF

PRODUCTION

LTC4227CGN-1#TRPBF

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LTC4227CGN-2#PBF

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LTC4227CGN-2#TRPBF

PRODUCTION

LTC4227IGN-1#PBF

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LTC4227IGN-1#TRPBF

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LTC4227IGN-2#PBF

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LTC4227IGN-2#TRPBF

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Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

arrow down

Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC4227CGN-1#PBF

PRODUCTION

LTC4227CGN-1#TRPBF

PRODUCTION

LTC4227CGN-2#PBF

PRODUCTION

LTC4227CGN-2#TRPBF

PRODUCTION

LTC4227IGN-1#PBF

PRODUCTION

LTC4227IGN-1#TRPBF

PRODUCTION

LTC4227IGN-2#PBF

PRODUCTION

LTC4227IGN-2#TRPBF

PRODUCTION

Apr 6, 2022

- 22_0066

arrow down

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC4227CGN-1#PBF

PRODUCTION

LTC4227CGN-1#TRPBF

PRODUCTION

LTC4227CGN-2#PBF

PRODUCTION

LTC4227CGN-2#TRPBF

PRODUCTION

LTC4227IGN-1#PBF

PRODUCTION

LTC4227IGN-1#TRPBF

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LTC4227IGN-2#PBF

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LTC4227IGN-2#TRPBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 4

reference details image

DC1625A-B

LTC4227CUFD-2 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Auto-Retry and 100ms On Delay

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DC1625A-B

LTC4227CUFD-2 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Auto-Retry and 100ms On Delay

LTC4227CUFD-2 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Auto-Retry and 100ms On Delay

Product Detail

DC1625A-B: Demo Board for the LTC4227 Dual Ideal Diode and Single Hot Swap Controller.

reference details image

DC1625A-D

LTC4227CUFD-4 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Auto-Retry and 1.6ms On Delay

zoom

DC1625A-D

LTC4227CUFD-4 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Auto-Retry and 1.6ms On Delay

LTC4227CUFD-4 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Auto-Retry and 1.6ms On Delay

Product Detail

Demonstration circuit 1625A is intended to demonstrate performance of the LTC4227-1/LTC4227-2/LTC4227-3/LTC4227-4 dual ideal diode and Hot Swap controller. Each rail has an individual ideal diode. Ideal diode outputs are connected to the load through a single Hot Swap circuit.


 


 


reference details image

DC1625A-A

LTC4227CUFD-1 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Latch-Off and 100ms On Delay

zoom

DC1625A-A

LTC4227CUFD-1 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Latch-Off and 100ms On Delay

LTC4227CUFD-1 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Latch-Off and 100ms On Delay

Product Detail

DC1625A-A: Demo Board for the LTC4227 Dual Ideal Diode and Single Hot Swap Controller.

reference details image

DC1625A-C

LTC4227CUFD-3 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Latch-Off and 1.6ms On Delay

zoom

DC1625A-C

LTC4227CUFD-3 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Latch-Off and 1.6ms On Delay

LTC4227CUFD-3 Demo Board: Dual Ideal Diode and Single Hot Swap Controller with Fault Latch-Off and 1.6ms On Delay

Product Detail

Demonstration circuit 1625A is intended to demonstrate performance of the LTC4227-1/LTC4227-2/LTC4227-3/LTC4227-4 dual ideal diode and Hot Swap controller. Each rail has an individual ideal diode. Ideal diode outputs are connected to the load through a single Hot Swap circuit.


 


Tools & Simulations

Tools & Simulations 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.

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