LTC4376CDHD#PBF

OR Controllers, Ideal Diodes Overview

The LTC4376CDHD#PBF is an OR controller and current share controller designed for N-channel power switches. It features a 1:1 input-to-output ratio with an internal switch capable of handling up to 7A output current. The device operates on a supply voltage range of 4V to 40V and draws a supply current of 150 µA. It utilizes a 16-WFDFN package with exposed pad, measuring 5x4 mm. The component supports surface mount installation and functions within a commercial temperature range of 0°C to 70°C.

OR Controllers, Ideal Diodes Feature Summary

• Provides ideal diode functionality using external N-channel MOSFETs to minimize voltage drop and power loss compared to standard diodes.
• Integrates current sharing capabilities to balance load distribution among multiple parallel power sources.
• Includes built-in protection mechanisms against reverse input conditions and short circuits.

OR Controllers, Ideal Diodes Applications

• Automotive power systems requiring redundant inputs
• Portable battery equipment needing efficient power management
• Redundant power supply architectures in industrial settings
• Computer systems demanding high-efficiency power distribution

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix CDHD corresponds to the commercial temperature grade (0°C to 70°C) and DFN-16 package when sourcing. Confirm RoHS compliance status through official Analog Devices documentation prior to integration. Ensure the ordering part number matches the exact pinout and thermal requirements of your PCB layout design.

OR Controllers, Ideal Diodes Selection Notes

Select this component for applications requiring precise current sharing between parallel power rails rather than simple ORing. Consider the 150 µA supply current for low-power standby requirements. Evaluate the 7A maximum output capability against peak load demands. Verify that the external N-channel FET selection aligns with the controller's drive characteristics and the 4V to 40V operating range.

OR Controllers, Ideal Diodes Part Context

This device belongs to the LTC4376 series of ideal diode controllers from Analog Devices. It is distinct from the HD variant which offers an extended industrial temperature range (-40°C to +125°C). The CDHD suffix specifically denotes the commercial grade version packaged in a 16-lead DFN format, tailored for cost-sensitive consumer and automotive electronics.

OR Controllers, Ideal Diodes Replacement Considerations

The LTC4376HDHD#PBF serves as a direct functional substitute with identical electrical specifications but offers an extended industrial temperature range (-40°C to +125°C). Ensure the application environment remains within the 0°C to 70°C limit if retaining the CDHD variant; otherwise, the HD version provides broader thermal resilience without circuit redesign.

OR Controllers, Ideal Diodes FAQ

Does the LTC4376CDHD#PBF include an internal MOSFET?

No, it is a controller that requires external N-channel MOSFETs to implement the ideal diode function.

What is the primary difference between the CDHD and HD suffixes?

The CDHD suffix indicates a commercial temperature range (0°C to 70°C), while the HD suffix indicates an industrial temperature range (-40°C to +125°C).