LTC4355
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4355

Positive High Voltage Ideal Diode-OR with Input Supply and Fuse Monitors

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 14
1ku List Price Starting From $3.06
Features
  • Replaces Power Schottky Diodes
  • Controls N-Channel MOSFETs
  • 0.3μs Turn-Off Time Limits Peak Fault Current
  • Wide Operating Voltage Range: 9V to 80V
  • Smooth Switchover without Oscillation
  • No Reverse DC Current
  • Monitors VIN, Fuse, and MOSFET Diode
  • Available in 14-Lead (4mm × 3mm) DFN, 16-Lead MS and SO Packages
Additional Details
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The LTC4355 is a positive voltage ideal diode-OR controller that drives two external N-channel MOSFETs. Forming the diode-OR with N-channel MOSFETs instead of Schottky diodes reduces power consumption, heat dissipation and PC board area.

With the LTC4355, power sources can easily be ORed together to increase total system reliability. The LTC4355 can diode-OR two positive supplies or the return paths of two negative supplies, such as in a –48V system.

In the forward direction the LTC4355 controls the voltage drop across the MOSFET to ensure smooth current transfer from one path to the other without oscillation. If a power source fails or is shorted, fast turnoff minimizes reverse current transients.

Power fault detection indicates if the input supplies are not in regulation, the inline fuses are blown, or the voltages across the MOSFETs are greater than the fault threshold.

Applications

  • High Availability Systems
  • AdvancedTCA® (ATCA) Systems
  • +48V and –48V Distributed Power Systems
  • Telecom Infrastructure
Part Models 14
1ku List Price Starting From $3.06

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Feb 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC4355CDE#PBF

PRODUCTION

LTC4355CDE#TRPBF

PRODUCTION

LTC4355IDE#PBF

PRODUCTION

LTC4355IDE#TRPBF

PRODUCTION

Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4355CMS#PBF

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LTC4355HMS#PBF

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PRODUCTION

Feb 4, 2020

- 20_0132

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4355CMS#PBF

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LTC4355CMS#TRPBF

PRODUCTION

LTC4355HMS#PBF

PRODUCTION

LTC4355HMS#TRPBF

PRODUCTION

LTC4355IMS#PBF

PRODUCTION

LTC4355IMS#TRPBF

PRODUCTION

Aug 6, 2022

- 22_0173

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LTC4355CS#PBF

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PRODUCTION

LTC4355IS#PBF

PRODUCTION

LTC4355IS#TRPBF

PRODUCTION

Filter by Model

reset

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Part Models

Product Lifecycle

PCN

Feb 20, 2022

- 21_0269

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Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC4355CDE#PBF

PRODUCTION

LTC4355CDE#TRPBF

PRODUCTION

LTC4355IDE#PBF

PRODUCTION

LTC4355IDE#TRPBF

PRODUCTION

Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4355CMS#PBF

PRODUCTION

LTC4355CMS#TRPBF

PRODUCTION

LTC4355HMS#PBF

PRODUCTION

LTC4355HMS#TRPBF

PRODUCTION

LTC4355IMS#PBF

PRODUCTION

LTC4355IMS#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0132

arrow down

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4355CMS#PBF

PRODUCTION

LTC4355CMS#TRPBF

PRODUCTION

LTC4355HMS#PBF

PRODUCTION

LTC4355HMS#TRPBF

PRODUCTION

LTC4355IMS#PBF

PRODUCTION

LTC4355IMS#TRPBF

PRODUCTION

Aug 6, 2022

- 22_0173

arrow down

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LTC4355CS#PBF

PRODUCTION

LTC4355CS#TRPBF

PRODUCTION

LTC4355IS#PBF

PRODUCTION

LTC4355IS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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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