LTC4370
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4370

Two-Supply Diode-OR Current Balancing Controller

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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 $5.90
Features
  • Shares Load Between Two Supplies
  • Eliminates Need for Active Control of Input Supplies
  • No Share Bus Required
  • Blocks Reverse Current
  • No Shoot-Through Current During Start-Up or Faults
  • 0V to 18V High Side Operation
  • Enable Inputs
  • MOSFET On Status Outputs
  • Dual Ideal Diode Mode
  • 16-Lead DFN (4mm × 3mm) and MSOP Packages
Additional Details
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The LTC4370 is a two-supply current sharing controller which incorporates MOSFET ideal diodes. The diodes block reverse and shoot-through currents during start-up and fault conditions. Their forward voltage is adjusted to share the load currents between supplies. Unlike other sharing methods, neither a share bus nor trim pins on the supply are required.

The maximum MOSFET voltage drop can be set with a resistor. A fast gate turn-on reduces the load voltage droop during supply switchover. If the input supply fails or is shorted, a fast turn-off minimizes reverse current transients.

The controller operates with supplies from 2.9V to 18V. For lower rail voltages, an external supply is needed at the VCC pin. Enable inputs can be used to turn off the MOSFET and put the controller in a low current state. Status outputs indicate whether the MOSFETs are on or off. The load sharing function can be disabled to turn the LTC4370 into a dual ideal diode controller.

Applications

  • Redundant Power Supplies
  • High Availability Systems and Servers
  • Telecom and Network Infrastructure
Part Models 8
1ku List Price Starting From $5.90

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4370CDE#PBF
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4370CMS#PBF

PRODUCTION

LTC4370CMS#TRPBF

PRODUCTION

LTC4370IMS#PBF

PRODUCTION

LTC4370IMS#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0132

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

LTC4370CMS#PBF

PRODUCTION

LTC4370CMS#TRPBF

PRODUCTION

LTC4370IMS#PBF

PRODUCTION

LTC4370IMS#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

LTC4370CMS#PBF

PRODUCTION

LTC4370CMS#TRPBF

PRODUCTION

LTC4370IMS#PBF

PRODUCTION

LTC4370IMS#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0132

arrow down

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

LTC4370CMS#PBF

PRODUCTION

LTC4370CMS#TRPBF

PRODUCTION

LTC4370IMS#PBF

PRODUCTION

LTC4370IMS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC1741B

LTC4370CDE Demo Board | Two-Supply Diode-OR Current Sharing Controller

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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