**Detailed parameter description:**.
- **Model:** CPH3350-VB.
- **Silk screen:** VB2290.
- **Brand:** VBsemi.
- **Package:** SOT23.
- **Channel type:** P-Channel.
- **Rated voltage (Vds):** -20V.
- **Rated current (Id): ** -4A.
- **On-resistance (RDS(ON)): ** 57mΩ @ VGS=4.5V, VGS=12V.
- **Threshold voltage (Vth): ** -0.81V.
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**Application Introduction:**.
Suitable for low power, low voltage load switching applications. It is a P-Channel MOSFET with relatively low on-resistance and can Enables efficient power control and switching operations. .
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**Main application areas and modules:**.
1. **Power management module:** Used for power modules such as low-power switching power supplies and voltage regulators to provide effective energy Convert. .
2. **Battery protection module:** Suitable for small battery protection circuits to control the battery charging and discharging process. .
3. **Small power adapter:** In small power adapter, it is used as a switching element to improve energy conversion efficiency. .
4. **LED lighting control:** Suitable for low-power LED lighting control modules, providing dimmable and switching functions. .
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**Function:**.
CPH3350-VB acts as a P-Channel MOSFET, providing reliable power control and switching operations in low-power, low-voltage load switching applications. .
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**Usage Precautions:**.
1. **Voltage Level:** Make sure to use it within the specified rated voltage range and avoid exceeding the maximum rated voltage. .
2. **Current direction:** As a P-Channel MOSFET, the current direction is from source to drain, so attention should be paid to the current direction. .
3. **Temperature:** Pay attention to the operating temperature range and ensure it is used under appropriate temperature conditions. .
4. **Drive voltage:** Apply appropriate drive voltage to the control terminal (Gate) to ensure reliable power control. .
5. **Threshold voltage range:** Pay attention to the threshold voltage range to ensure normal operation within the specified range. .
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The above is a brief description of the detailed parameters, application and usage precautions of CPH3350-VB. Be sure to follow the instructions in the specification sheet and data sheet.