LTC4372
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4372

Low Quiescent Current Ideal Diode Controller

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 12
1ku List Price Starting From $2.59
Features
  • Reduces Power Dissipation by Replacing a Power Schottky Diode
  • Low Quiescent Current: 5μA Operating
  • Wide Operating Voltage Range: 2.5V to 80V
  • Reverse Supply Protection to –28V
  • No TVS Input Clamps Required
  • High Side External N-Channel MOSFET Drive
  • Drives Back-to-Back MOSFETs for Inrush Control and Load Switching
  • Shutdown Input for ON/OFF Control
  • Fast Reverse Current Turn-Off within 1.5μs
  • 8-Lead MSOP and 3mm × 3mm DFN Packages
Additional Details
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The LTC4372/LTC4373 are positive high voltage ideal diode controllers that drive an external N-channel MOSFET to replace a Schottky diode. They control the forward voltage drop across the MOSFET to ensure current delivery or current transfer from one path to the other even at light loads.

A 5μA operating current achieves high efficiency for intermittent load applications or always-on backup power supplies. If a power source fails or is shorted, a fast turn-off minimizes reverse current transients. The LTC4372/LTC4373 control back-to-back N-channel MOSFETs for inrush current control and load switching.

The LTC4372’s SHDN pin keeps the MOSFET off and reduces the quiescent current to 3.5μA. The LTC4373 has a UV pin for undervoltage monitoring while the UVOUT pin provides hysteresis adjustment and status information. During undervoltage, the back-to-back MOSFETs are cut off and quiescent current reduces to 0.5μA.

APPLICATIONS

  • Automotive Battery Protection
  • Redundant Power Supplies
  • Portable Instrumentation
  • Solar Powered Systems
  • Energy Harvesting Applications
  • Supply Holdup
Part Models 12
1ku List Price Starting From $2.59

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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

Aug 24, 2021

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC4372CMS8#PBF

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LTC4372CMS8#TRPBF

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LTC4372HMS8#PBF

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LTC4372IMS8#PBF

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Filter by Model

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Part Models

Product Lifecycle

PCN

Aug 24, 2021

- 20_0128

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Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC4372CMS8#PBF

PRODUCTION

LTC4372CMS8#TRPBF

PRODUCTION

LTC4372HMS8#PBF

PRODUCTION

LTC4372HMS8#TRPBF

PRODUCTION

LTC4372IMS8#PBF

PRODUCTION

LTC4372IMS8#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC2969A

LTC4372/LTC4373 Demo Board | Low Quiescent Current Ideal Diodes

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DC2969A

LTC4372/LTC4373 Demo Board | Low Quiescent Current Ideal Diodes

LTC4372/LTC4373 Demo Board | Low Quiescent Current Ideal Diodes

Product Detail

The DC2969A circuit board enables evaluation of the LTC4372 and LTC4373 low quiescent current ideal diode controllers. The DC2969A-A option is assembled with the LTC4372 controller, whereas DC2969A-B is assembled with the LTC4373 controller. DC2969A includes two independent ideal diode circuits sharing a common ground, operating over a 2.5V to 33V range, and protecting the load against reverse inputs of up to –28V. One of these circuits includes a high side load switch in series with the ideal diode allowing load on/off control with the SHDN/UV jumper. In addition, input dropouts are blocked from the output, permitting capacitors to hold up the load when input power fails. Each channel can carry up to 20A.
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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