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RT9746HWSC
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Product Detailed Parameters
- Description：IC REG OVP WITH PTVS WL-CSP-12
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Type：General Purpose
- Number of Outputs：1
- Ratio - Input:Output：1:01
- Output Configuration：High Side
- Output Type：-
- Interface：On/Off
- Voltage - Load：3V ~ 20V
- Voltage - Supply (Vcc/Vdd)：Not Required
- Current - Output (Max)：-
- Rds On (Typ)：35mOhm
- Input Type：Non-Inverting
- Features：-
- Fault Protection：Over Voltage
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：12-WLCSP (1.92x1.27)
- Package / Case：12-UFBGA, WLCSP
- Grade：-
- Qualification：-
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Overview
The RT9746HWSC is an overvoltage protection device from Richtek USA Inc., designed for high-side power distribution. It features a low 35mΩ (typ) RON internal FET and integrates a PTVS diode for surge protection. The device operates with a load voltage range of 3V to 20V, with specific variants rated up to 6.7V OVP. It includes a warning indicator for over-voltage or under-voltage conditions and supports a maximum rating of 28V for DC adapters. The component is housed in a 12-UFBGA, WLCSP package.
Feature Summary
- Integrates a PTVS diode for VBUS surge protection
- Features a warning indicator for over-voltage or under-voltage conditions
- Includes a low on-resistance internal FET for efficient power distribution
Applications
- VBUS overvoltage protection in USB applications
- DC adapter input protection circuits
- Power distribution switches requiring surge immunity
Procurement Notes
Verify the specific voltage rating variant required, as sources indicate both 6.7V OVP and 20V load ranges. Confirm the package type matches the design, typically 12-UFBGA WLCSP. Ensure compatibility with the target interface standards. Cross-reference the manufacturer datasheet for exact electrical limits before finalizing procurement specifications.
Selection Notes
Select this component when integrated surge protection and overvoltage monitoring are required in a compact form factor. The embedded PTVS diode simplifies design by reducing external component count. Consider the low RDS(ON) for minimizing power loss in high-current paths. Verify that the warning indicator functionality meets system safety requirements.
Part Context
This part belongs to Richtek's power management IC portfolio, specifically within the power distribution switch and overvoltage protector category. It is designed to protect sensitive downstream electronics from voltage spikes and surges, commonly found in USB Type-C and other portable electronic interfaces.
Replacement Considerations
Check for direct pin-to-pin replacements within the RT9746H series if different voltage thresholds are needed. Verify that any substitute maintains the same WLCSP-12 footprint and integrates comparable PTVS capabilities. Consult official substitution guides for confirmed equivalents.
