DZDH0401DW-7

Overview

The DZDH0401DW-7 is an N+1 ORing controller designed to drive P-channel enhancement-mode MOSFETs configured as ideal diodes. It operates within a supply voltage range of 0V to 40V and supports output currents up to 3A. The device functions as a differential amplifier, minimizing forward current loss when input exceeds output and providing high isolation during reverse conditions. It features a typical threshold of approximately 34 mV for switching between conduction and isolation states. Packaged in a compact SOT-363 format, it ensures efficient power management with low quiescent current consumption.

Feature Summary

• Acts as a differential amplifier to control P-channel MOSFETs for ideal diode applications
• Provides automatic reverse current blocking to prevent system discharge when input voltage drops below output
• Utilizes a low-voltage threshold mechanism to minimize forward conduction losses
• Offers high isolation capabilities to maintain system stability during power source transitions

Applications

• Battery discharge protection circuits
• High-side disconnect switches
• Hot-swap power supplies with N+1 redundancy
• Emergency lighting systems

Procurement Notes

Verify the specific suffix '-7' corresponds to the tape-and-reel packaging configuration required for your assembly line. Confirm that the SOT-363 package dimensions align with your PCB footprint constraints. Ensure the external P-channel MOSFET selected meets the 40V rating and current handling requirements specified for this controller application. Check for RoHS compliance documentation if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when designing systems requiring efficient power path management without the voltage drop associated with standard Schottky diodes. It is suitable for applications where space is limited due to its small form factor. Consider the external MOSFET's on-resistance characteristics, as the controller's efficiency depends heavily on the paired transistor performance. Ensure the operating temperature range covers the intended environmental conditions.

Part Context

This part belongs to Diodes Incorporated's portfolio of power management integrated circuits, specifically within the ORing controller category. It is engineered to replace traditional diode-based solutions in power distribution networks. The device integrates comparison logic to manage power flow direction automatically. It is commonly used in portable electronics and industrial equipment where battery life and power efficiency are critical design parameters.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate other ORing controllers from the same manufacturer or industry equivalents based on pin compatibility and electrical specifications.

FAQ

How does the DZDH0401DW-7 handle reverse current?

The controller monitors the voltage difference between input and output. If the input voltage falls below the output by more than the threshold, it turns off the external P-channel MOSFET to block reverse current flow.

What type of MOSFET is controlled by this device?

It is designed to drive P-channel enhancement-mode MOSFETs configured as ideal diodes.