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STT3921P-VB Product details
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Product Introduction:
**STT3921P-VB** is a dual P-channel MOSFET in a SOT23-6 package, designed for low-voltage, high-efficiency power management applications. This product uses Trench technology and has a lower on-resistance (Rds(on)), capable of handling higher currents at lower power consumption. Its maximum drain-source voltage (Vds) is -20V and its gate-source voltage (Vgs) is ±12V, making it suitable for battery-powered devices, power conversion systems, and various medium and low voltage applications. The on-resistance of the STT3921P-VB is 100mΩ @ Vgs = 2.5V and 75mΩ @ Vgs = 4.5V, respectively, which can ensure low power consumption and high efficiency, and is particularly suitable for use in scenarios requiring stable current control and high efficiency.
**STT3921P-VB** is a dual P-channel MOSFET in a SOT23-6 package, designed for low-voltage, high-efficiency power management applications. This product uses Trench technology and has a lower on-resistance (Rds(on)), capable of handling higher currents at lower power consumption. Its maximum drain-source voltage (Vds) is -20V and its gate-source voltage (Vgs) is ±12V, making it suitable for battery-powered devices, power conversion systems, and various medium and low voltage applications. The on-resistance of the STT3921P-VB is 100mΩ @ Vgs = 2.5V and 75mΩ @ Vgs = 4.5V, respectively, which can ensure low power consumption and high efficiency, and is particularly suitable for use in scenarios requiring stable current control and high efficiency.
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Product parameter：
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds2.5 | Rds4.5 | Rds10 | Technology |
|---|---|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P | -20V | -0.6V | -4A | 100mΩ | Trench |
| VB Package | Configuration | VCE | VGE | VGEth(V) | VCEsat15V | ICE | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds18 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P | -20V | -0.6V | -4A | Trench |
| VB Package | Configuration | VDS(V) | VGS | Vthyp（V） | ID(A) | Rds6 | Technology |
|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P | -20V | -0.6V | -4A | Trench |
| VB Package | Polarity | Vz / VR | Pd | VF | IF | IR | Cd | Type |
|---|---|---|---|---|---|---|---|---|
| SOT23-6 | Dual-P+P |
Detailed parameter description:
- **Package**: SOT23-6
- **Configuration**: Dual-P+P-Channel
- **Drain-source voltage (Vds)**: -20V
- **Gate-source voltage (Vgs)**: ±12V
- **Threshold voltage (Vth)**: -0.6V
- **On-resistance (Rds(on))**:
- 100mΩ @ Vgs = 2.5V
- 75mΩ @ Vgs = 4.5V
- **Maximum drain current (Id)**: -4A
- **Technology**: Trench
- **Maximum power dissipation (Pd)**: Maximum 1.2W (the specific value needs to be calculated according to the working conditions)
- **Input capacitance (Ciss)**: 600pF @ Vds = 10V
- **Output capacitance (Coss)**: 100pF @ Vds = 10V
- **Reverse recovery time (Trr)**: 35ns
- **Operating temperature range**: -55°C to +150°C
- **Package**: SOT23-6
- **Configuration**: Dual-P+P-Channel
- **Drain-source voltage (Vds)**: -20V
- **Gate-source voltage (Vgs)**: ±12V
- **Threshold voltage (Vth)**: -0.6V
- **On-resistance (Rds(on))**:
- 100mΩ @ Vgs = 2.5V
- 75mΩ @ Vgs = 4.5V
- **Maximum drain current (Id)**: -4A
- **Technology**: Trench
- **Maximum power dissipation (Pd)**: Maximum 1.2W (the specific value needs to be calculated according to the working conditions)
- **Input capacitance (Ciss)**: 600pF @ Vds = 10V
- **Output capacitance (Coss)**: 100pF @ Vds = 10V
- **Reverse recovery time (Trr)**: 35ns
- **Operating temperature range**: -55°C to +150°C
Domain and module applications：
Applicable fields and module application examples:
1. **Battery Management System (BMS)**
The low on-resistance and high current handling capability of STT3921P-VB make it widely used in battery management systems. Especially in applications such as electric vehicles, portable devices and smart battery chargers, this MOSFET can effectively control charging and discharging to ensure the safety and efficient operation of the battery.
2. **Low-voltage power switch**
Due to its low on-resistance, STT3921P-VB can be used as an efficient power switching element in low-voltage power switches. When used in power adapters, DC-DC converters, LED driver power supplies, etc., it can provide higher energy efficiency and reduce power loss.
3. **Load switch and power management**
STT3921P-VB can be used as a load switch in power management systems, especially for portable battery-driven devices and low-power consumer electronics. Its low Rds(on) ensures stable current transmission, reduces heat generation in the device, and improves system efficiency and reliability.
4. **Smart Home System**
In smart home and IoT devices, STT3921P-VB is used for power switching and power management systems, which can effectively regulate the power consumption of the device and improve the energy efficiency of the device. The low on-resistance and high current capability make it very suitable for use in devices such as smart sockets, lamp dimmers, and smart sensors.
5. **LED Drive Circuit**
The excellent switching characteristics of this MOSFET make it widely used in LED drive circuits. In applications such as smart lighting and backlight modules, STT3921P-VB can provide stable current control, optimize the output of LED light sources, extend system life and reduce energy loss.
6. **Portable Device Power Management**
In portable electronic devices (such as smartphones, tablets, wearable devices, etc.), STT3921P-VB is widely used in battery management and power switch modules. Its efficient current control can extend battery life and provide low-power power solutions to optimize the energy efficiency of the device.
7. **Power Factor Correction Circuit (PFC)**
STT3921P-VB can also be used in power factor correction (PFC) circuits to help improve the efficiency of the power system and reduce the total power loss. The low on-resistance characteristics make it perform well in high-efficiency power modules, especially in scenarios where power factor mismatch needs to be reduced to provide stable current regulation.
8. **Automotive Power Management**
In automotive power management, STT3921P-VB can be used for power switching, load control and power regulation. Especially in hybrid electric vehicles and electric vehicles, it can help improve energy management efficiency and ensure stable operation of the system in a low-power state.
Through the above application cases, STT3921P-VB shows its wide applicability in a variety of low-voltage power systems, intelligent power management and battery-driven applications. Its low on-resistance and high efficiency make it ideal for use in a variety of high-efficiency power supplies, load switches, and battery management systems.
1. **Battery Management System (BMS)**
The low on-resistance and high current handling capability of STT3921P-VB make it widely used in battery management systems. Especially in applications such as electric vehicles, portable devices and smart battery chargers, this MOSFET can effectively control charging and discharging to ensure the safety and efficient operation of the battery.
2. **Low-voltage power switch**
Due to its low on-resistance, STT3921P-VB can be used as an efficient power switching element in low-voltage power switches. When used in power adapters, DC-DC converters, LED driver power supplies, etc., it can provide higher energy efficiency and reduce power loss.
3. **Load switch and power management**
STT3921P-VB can be used as a load switch in power management systems, especially for portable battery-driven devices and low-power consumer electronics. Its low Rds(on) ensures stable current transmission, reduces heat generation in the device, and improves system efficiency and reliability.
4. **Smart Home System**
In smart home and IoT devices, STT3921P-VB is used for power switching and power management systems, which can effectively regulate the power consumption of the device and improve the energy efficiency of the device. The low on-resistance and high current capability make it very suitable for use in devices such as smart sockets, lamp dimmers, and smart sensors.
5. **LED Drive Circuit**
The excellent switching characteristics of this MOSFET make it widely used in LED drive circuits. In applications such as smart lighting and backlight modules, STT3921P-VB can provide stable current control, optimize the output of LED light sources, extend system life and reduce energy loss.
6. **Portable Device Power Management**
In portable electronic devices (such as smartphones, tablets, wearable devices, etc.), STT3921P-VB is widely used in battery management and power switch modules. Its efficient current control can extend battery life and provide low-power power solutions to optimize the energy efficiency of the device.
7. **Power Factor Correction Circuit (PFC)**
STT3921P-VB can also be used in power factor correction (PFC) circuits to help improve the efficiency of the power system and reduce the total power loss. The low on-resistance characteristics make it perform well in high-efficiency power modules, especially in scenarios where power factor mismatch needs to be reduced to provide stable current regulation.
8. **Automotive Power Management**
In automotive power management, STT3921P-VB can be used for power switching, load control and power regulation. Especially in hybrid electric vehicles and electric vehicles, it can help improve energy management efficiency and ensure stable operation of the system in a low-power state.
Through the above application cases, STT3921P-VB shows its wide applicability in a variety of low-voltage power systems, intelligent power management and battery-driven applications. Its low on-resistance and high efficiency make it ideal for use in a variety of high-efficiency power supplies, load switches, and battery management systems.
* Please note: the above is only an example application scenario, the specific application depends on the requirements and conditions of the system design. When using this device, consult its data sheet for detailed technical specifications and features
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