Product introduction：
STK7002B-VB Product Introduction
STK7002B-VB is a **SOT23-3 package** **single N-channel power MOSFET**, using **Trench technology**, with **60V** drain-source voltage (VDS) and **0.3A** maximum drain current (ID). The **on-resistance** (RDS(ON)) of this MOSFET is **3100mΩ** at VGS=4.5V and **2800mΩ** at VGS=10V. Although it is higher than the on-resistance of high-power MOSFETs, it still performs well for low-power and low-current applications. The **1.7V** threshold voltage (Vth) of STK7002B-VB makes it suitable for a variety of conventional low-voltage applications, and its compact **SOT23-3** package enables it to be used in space-compact designs.
This MOSFET is suitable for **low power switching applications**, such as **portable devices**, **low current power management systems** and **LED drive circuits**. Due to its small package and relatively low current capability, it is very suitable for light load current applications and exhibits good power efficiency in low power, low voltage systems.
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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 |
|
STK7002B-VB Detailed Parameter Description
| **Parameter** | **Value** | **Description** |
|-------------------------|---------------------------------|--------------------------------------------------|
| **Package Type** | SOT23-3 | Small SOT23-3 package, suitable for space-constrained applications. |
| **Channel Configuration** | Single N-Channel | Single N-Channel configuration, suitable for traditional power switch applications. |
| **Drain-Source Voltage (VDS)** | 60V | Maximum drain-source voltage is 60V, suitable for low-voltage power switch applications. |
| **Gate-Source Voltage (VGS)** | ±20V | Maximum gate-source voltage is ±20V, suitable for a variety of drive circuit designs. |
| **Threshold Voltage (Vth)** | 1.7V | Threshold voltage is 1.7V, suitable for standard drive circuits. |
| **On-resistance (RDS(ON))** | 3100mΩ @ VGS=4.5V | The on-resistance is 3100mΩ at VGS=4.5V, suitable for low current applications. |
| **On-resistance (RDS(ON))** | 2800mΩ @ VGS=10V | The on-resistance is 2800mΩ at VGS=10V, suitable for medium current applications to improve efficiency. |
| **Drain current (ID)** | 0.3A | The maximum drain current is 0.3A, suitable for low current applications. |
| **Technology type** | Trench | Using Trench technology, suitable for high-efficiency power switch design. |
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Domain and module applications：
Applications and module examples
1. **Low-power switching power supply**
STK7002B-VB is ideal for low-power **switching power supplies** (SMPS), especially in **DC-DC converters** and **low-power power adapters**. Due to its low drain current (0.3A), it is ideal for powering small portable devices such as **mobile phone chargers**, **Bluetooth headsets** and **small battery chargers**. The MOSFET can effectively control low-current output to ensure low-power, efficient power conversion.
2. **LED drive circuit**
In **LED drive circuit**, STK7002B-VB can effectively provide stable current to drive low-power LEDs due to its low power consumption and high switching efficiency. It is suitable for low-power **indoor lighting**, **indicator lights** and **backlight sources**. Especially in **wearable devices** and **portable devices**, STK7002B-VB can help achieve the goals of energy efficiency and long battery life.
3. **Battery Management System (BMS)**
In the battery management system (BMS), the STK7002B-VB can be used as a **low current protection switch**, especially in the battery management of **small devices**. Due to its low drain current and reasonable on-resistance, it can effectively switch the battery current and is suitable for battery protection circuits in **mobile power** and **small consumer electronics**.
4. **Low Current Power Management**
The STK7002B-VB is suitable for various **low current power management** systems, especially for systems that require efficient and low current management, such as **smart watches**, **medical equipment** and **wearable devices**. It can provide efficient current control in battery-powered systems, extend battery life and ensure stable operation of the device.
5. **Audio Amplifier Power Switch**
The STK7002B-VB is also widely used in **audio amplifier** power management, especially in small audio devices that require low power consumption and the ability to switch current efficiently. It can be used as a power switch or current limiter to help **sound systems** and **small audio devices** achieve high power efficiency.
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* 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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