LTC4372/73: Low Quiescent Current Ideal Diode Controllers

The LTC4372/73 feature low operating current (5uA) and shutdown current (0.5uA) to increase efficiency in applications where the ideal diode is used for intermittent loads or always-on standby channels, such as in battery powered applications in portable instrumentation, automotive and renewable energy fields.

The LTC4372/73 differ in a secondary technical function:
LTC4372:  The LTC4372 shutdown function reduces the quiescent current to 0.5µA (lead part)
LTC4373:  The LTC4373 has a UV pin for undervoltage monitoring while the UVOUT pin provides hysteresis adjustment and status information.

Key Features and Benefits

Reduces Power Dissipation by Replacing a Power Schottky Diode with an external N-Channel MOSFET
Low Quiescent Current: 5µA Operating, 0.5µA Shutdown minimizes power loss and conserves energy, which is especially important in battery powered automotive and portable applications
Wide Operating Voltage Range: 2.5V to 80V supports positive high voltage rails or the return path of -48V rails. Operates through automotive cold crank applications.

Applications

Automotive: cold crank, battery, blocking diode, ideal diode
Consumer: portable applications, prosumer
Instrumentation: industrial battery powered applications
Aerospace and Defense: ADEF battery powered applications

Evaluation Board

The LTC4372/73 can be evaluated with the DC2969A-A and DC2969A-B.

Block Diagrams and Tables

LTC4372-4373-pg

LTC4372-4373-pc

LTC4372-4373-acl

LTC4372-4373-pc1

LTC4372-4373-pc2

LTC4372-4373-pc3

See related product

LTC4372CDD#PBF

Analog Devices OR Controllers View

See related product

LTC4372CDD#TRPBF

Analog Devices OR Controllers View

See related product

LTC4372CMS8#PBF

Analog Devices OR Controllers View

See related product

LTC4372CMS8#TRPBF

Analog Devices OR Controllers View

See related product

DC2969A-A

Analog Devices Power Management Development Boards and Kits View

See related product

DC2969A-B

Analog Devices Power Management Development Boards and Kits View

 

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