Product parameter：
| VB Package |
Configuration |
VDS(V) |
VGS |
Vthyp（V） |
ID(A) |
Rds2.5 |
Rds4.5 |
Rds10 |
Technology |
| SOT23-3 |
Single-N |
60V |
20（±V） |
1.7V |
0.3A |
|
|
2800mΩ |
|
**
- **Package type**: SOT23-3 package, suitable for circuit board design with limited space. SOT23-3 is a common surface mount package that enables high-density integration and is suitable for a variety of portable electronic products.
- **Configuration**: Single N-channel MOSFET, suitable for switching circuits, load control, and power management. N-channel configurations generally provide lower on-resistance and higher current carrying capacity, suitable for applications with forward current flow.
- **V_DS (drain-source voltage)**: 60V, suitable for low to medium voltage power management and load switching applications, and can work stably in a voltage environment up to 60V.
- **V_GS (gate-source voltage)**: ±20V, providing sufficient gate voltage adjustment range, suitable for a variety of power and load control requirements.
- **V_th (gate threshold voltage)**: 1.7V, the lower gate threshold voltage enables it to switch conveniently at a lower gate voltage, especially suitable for low voltage drive circuit applications.
- **R_DS(ON) (on-resistance)**:
- 3100mΩ @ V_GS = 4.5V
- 2800mΩ @ V_GS = 10V
Despite the higher R_DS(ON), it is still suitable for lower power applications, suitable for non-high frequency, low power load switching and control scenarios.
- **I_D (drain current)**: 0.3A, suitable for low current load switching, capable of carrying a stable current, suitable for small power and signal switching circuits.
- **Technology type**: Trench technology, with better switching performance and lower on-resistance. Suitable for high-performance and low-power circuit design.
Domain and module applications：
1. **Low-power power switch**
SMG702K-VB can be used for low-power power switch applications, especially with good conduction characteristics under low current load. It plays an important role in low-power power supply, helping to save energy and extend the battery life of the device.
**Example**: In small wireless devices such as wireless headphones or portable speakers, SMG702K-VB can be used in power switch circuits to achieve efficient battery management, avoid energy waste, and ensure that the device can effectively turn off the power in sleep mode.
2. **Signal switch**
Due to its low threshold voltage and moderate on-resistance, SMG702K-VB is suitable for low-power signal switching, especially in the control of analog signals or small current signals, and can efficiently switch the signal path without introducing excessive losses.
**Example**: In audio amplifiers and sensor signal processing circuits, SMG702K-VB can be used as a signal switch to achieve precise signal transmission and switching while maintaining signal quality.
3. **Battery Management System**
In battery management systems, the SMG702K-VB can be used for battery charge and discharge path control. Its low on-resistance can effectively reduce the loss in the current path, making it suitable for battery chargers and portable power devices.
**Example**: In the battery management module of a smartphone or tablet, the SMG702K-VB can be used as a battery charge and discharge switch to ensure safe charging and discharging of the battery and optimize battery life.
4. **Low-power control circuit**
The SMG702K-VB is also suitable for low-power control circuits such as microcontroller (MCU) power management or small load control circuits. Its low on-resistance helps improve the energy efficiency of the system, especially in applications with light loads.
**Example**: In Internet of Things (IoT) devices and smart home control systems, the SMG702K-VB can be used as a microcontroller power control switch to maximize energy savings while ensuring stable operation.
5. **Portable devices and consumer electronics**
Due to its small package and high efficiency, the SMG702K-VB is ideal for portable electronic devices and consumer electronics. These devices usually require compact circuit design and have high requirements for energy efficiency.
**Example**: In small wireless transmission devices, handheld devices or smart watches, the SMG702K-VB can be used for power switching, signal control, etc., to help improve the device's endurance and user experience.
6. **Small motor drive control**
SMG702K-VB is suitable for small motor drive control, especially the start-stop control of small current motors. Its efficient switching performance and appropriate current carrying capacity enable it to effectively drive small motors.
**Example**: In toy electric models, fan controllers and other small motor applications, the SMG702K-VB can be used to drive motor switches to ensure low power consumption and improve control accuracy.
* 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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