VBUS OVP with a PTVS Diode

RT9746 Feature Product

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The RT9746 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 overvoltage threshold, the internal FET is turned off to prevent damage to the protected down stream components.

The internal Over Voltage Thresholds (OVP) are preset to 6.8V typical. The RT9746 also feature an over-current protection and up to 4.5A.

The RT9746 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 OCP;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 and Over Current
    Protection FET on VBUS for Fault Isolation
TitleLast UpdateShareDownload
VBUS OVP with a PTVS Diode2016/03/07
Technical Documents
TitleLast UpdateShareDownload
Richtek Selection Guide [Oct., 2020]2020/12/30
Evaluation Boards
TitleLast UpdateShareDownload
RT9746 VBUS OVP with a PTVS Diode2021/01/21
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9746WSCWL-CSP1.92x1.27-12(BSC)3000 Request Buy from Distributor