LTC4371
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4371

Dual Negative Voltage Ideal Diode-OR Controller and Monitor

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $2.74
Features
  • Controls N-Channel MOSFETs to Replace Power Schottky Diodes
  • Low 15mV Forward Voltage Minimizes Dissipation
  • Withstands > ±300V Transients
  • Fast Turn-Off: <220ns
  • Shunt Regulated for High Voltage Applications
  • 4.5V Minimum Operation
  • Low 350μA Quiescent Current
  • 5mA Gate Pull-Up for 60Hz Applications
  • High Impedance Drain Pins: <10μA Leakage
  • Open Fuse and MOSFET Monitor
  • 10-Pin (3mm × 3mm) DFN and MSOP Packages
Additional Details
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The LTC4371 is a two-input negative voltage ideal diode-OR controller that drives external N-channel MOSFETs as a low dissipation alternative to Schottky diodes in high power –48V systems. Low power dissipation and voltage loss eliminates the need for heatsinks and reduces PC board area. Power sources can be easily ORed together to increase total system power and reliability.

The LTC4371 tolerates ±300V transients such as those experienced during lightning-induced surges and input supply short-circuit events. The internal shunt regulator and low 350μA quiescent current allow the use of a large value dropping resistor to protect the supply pin against high voltage transients, while the high impedance drain pins can be similarly protected by high value series resistors without compromising diode operation.

The 220ns reverse current turn-off is achieved by a powerful 2A gate driver with low propagation delay, thereby minimizing peak reverse current under catastrophic fault conditions. Open MOSFET and fuse faults are indicated at the FAULTB pin, which is capable of sinking 5mA to drive an LED or opto isolator.

Applications

  • –48V Telecom Power
  • AdvancedTCA Systems
  • Network Routers and Switches
  • Computer Systems and Servers
Part Models 8
1ku List Price Starting From $2.74

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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

Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4371CMS#PBF

PRODUCTION

LTC4371CMS#TRPBF

PRODUCTION

LTC4371IMS#PBF

PRODUCTION

LTC4371IMS#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4371CMS#PBF

PRODUCTION

LTC4371CMS#TRPBF

PRODUCTION

LTC4371IMS#PBF

PRODUCTION

LTC4371IMS#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4371CMS#PBF

PRODUCTION

LTC4371CMS#TRPBF

PRODUCTION

LTC4371IMS#PBF

PRODUCTION

LTC4371IMS#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4371CMS#PBF

PRODUCTION

LTC4371CMS#TRPBF

PRODUCTION

LTC4371IMS#PBF

PRODUCTION

LTC4371IMS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2180A

LTC4371 Demo Board | Dual -48V, 50A Ideal Diode-OR

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DC2180A

LTC4371 Demo Board | Dual -48V, 50A Ideal Diode-OR

LTC4371 Demo Board | Dual -48V, 50A Ideal Diode-OR

Product Detail

Demonstration circuit 2180A showcases the LTC4371 dual negative voltage ideal diode-OR controller and monitor, in a −48V, 50A application. Each channel includes two paralleled 2mΩ (Max) MOSFETs for a total dissipation of just 2.5W at full load. Power connections are made by way of 1⁄4" ring terminals with a cable capacity of 4 AWG.


 



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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