AOZ13937DI-02

Power Distribution Switches, Load Drivers Overview

The AOZ13937DI-02 is a high-side N-channel ideal diode sink switch manufactured by Alpha & Omega Semiconductor Inc. It operates within an input voltage range of 3.4 V to 32 V, with absolute maximum ratings for VIN and VOUT at 39 V. The device supports a continuous current of 7 A and can handle peak currents up to 18 A for 10 ms at a 2% duty cycle. It features a typical on-resistance (RDS(on)) of 20 mΩ and includes integrated protections such as overvoltage, reverse current, short circuit, overcurrent, and thermal shutdown. The component is housed in a 12-DFN (3x3) surface-mount package.

Power Distribution Switches, Load Drivers Feature Summary

• Ideal diode true reverse current blocking (IDTRCB)
• Programmable soft-start and slew rate control
• Integrated fault protection including OVP, UVLO, and TSD
• Automotive-grade reliability

Power Distribution Switches, Load Drivers Applications

• Thunderbolt/USB Type-C PD power switches
• Laptops, ultrabooks, and desktops
• Docking stations and dongles
• Power ORing rings
• Smartphones and tablets

Power Distribution Switches, Load Drivers Procurement Notes

Verify the specific suffix '-02' during procurement to ensure the correct fault recovery behavior. The '-02' variant indicates a latching fault mode, which differs from the auto-restart configuration found in other variants like the '-01'. Confirm that the design accommodates the latching requirement or includes external reset logic if this specific failure mode is intended for the application.

Power Distribution Switches, Load Drivers Selection Notes

Select the AOZ13937DI-02 when a latching fault response is required for safety-critical applications. This variant halts operation upon detecting a fault until manually reset, preventing automatic re-engagement in hazardous conditions. Ensure the system design accounts for the latch-up state and provides a mechanism to clear the fault condition before resuming normal switching operations.

Power Distribution Switches, Load Drivers Part Context

This component belongs to the AOZ13937 family of ideal diode sink switches designed for USB Type-C EPR applications. It complements pull-current switches like the AOZ15333DI to provide comprehensive port protection. The series is engineered to meet the stringent requirements of high-power USB implementations, offering low on-resistance and robust protection features suitable for modern computing and mobile devices.

Power Distribution Switches, Load Drivers Replacement Considerations

AOZ13937DI-01

Power Distribution Switches, Load Drivers FAQ

What is the difference between AOZ13937DI-01 and AOZ13937DI-02?

The primary difference lies in their fault recovery mechanisms. The AOZ13937DI-01 features auto-restart functionality, automatically attempting to resume operation after a fault clears. In contrast, the AOZ13937DI-02 has a latching fault mode, requiring an external reset signal to clear the fault and restore operation.

Does the AOZ13937DI-02 support true reverse current blocking?

Yes, the device incorporates Ideal Diode True Reverse Current Blocking (IDTRCB), which prevents reverse current flow from the output to the input, ensuring proper isolation in power distribution systems.