VBUS OVP with a PTVS Diode

RT9746H Feature Product

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The RT9746H is an overvoltage protection devices feature a low 35mΩ (typ) RON internal FET with PTVS diode. The PTVS also protects the devices from surges up to 100V. When the input voltage exceeds the over-voltage threshold, the internal FET is turned off to prevent damage to the protected down stream components.

The internal Over-Voltage Protection (OVP) thresholds are preset to 6.8V typical.

The RT9746H is offered in a small WL-CSP-12B (BSC) package provides small PCB area applications.


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Key Spec.
Status Active
Vin (min) (V) 3
Vin (max) (V) 6.7
Vin_ovp (typ) (V) 6.8
Delay Time (max) (us) 0.25
Ron (typ) (mOhm) 35
Features OVP
Package Type WL-CSP1.92x1.27-12(BSC)
  • PTVS Diode Embedded for VBUS Surge Protection
  • Warning Indicator for OVP or UVP
  • 28V Maximum Rating for DC Adapter
  • Integrated Over-Voltage
    Protection FET on VBUS for Fault Isolation
TitleLast UpdateShareDownload
VBUS OVP with a PTVS Diode2018/07/26
Technical Documents
TitleLast UpdateShareDownload
Richtek Selection Guide [Oct., 2020]2020/12/30
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9746HWSCWL-CSP1.92x1.27-12(BSC)3000 Request Buy from Distributor