Product introduction：
**Product Introduction: **
**SI7904DN-VB** is a dual N-type MOSFET in DFN8(3X3) package. It is designed for low voltage, high current power control and power management applications. The maximum drain-source voltage (VDS) of this MOSFET is 20V, and the maximum gate-source voltage (VGS) is ±20V, which is suitable for various low-power systems that require efficient switching control. **SI7904DN-VB** has a turn-on voltage (Vth) between 0.5V and 1.5V, and has a low on-resistance (RDS(ON)), which is 10mΩ at VGS = 10V and 12mΩ at VGS = 4.5V, which can achieve low power loss. The maximum drain current (ID) is 9.4A, which is very suitable for low voltage, high efficiency power conversion and battery management systems. Based on Trench technology, this MOSFET provides low switching loss and high reliability, and is widely used in various consumer electronics, power tools and mobile devices.
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Product parameter：
| VB Package |
Configuration |
VDS(V) |
VGS |
Vthyp（V） |
ID(A) |
Rds2.5 |
Rds4.5 |
Rds10 |
Technology |
| DFN8(3X3) |
Dual-N |
20V |
|
0.5~1.5V |
9.4A |
|
|
10mΩ |
Trench |
| VB Package |
Configuration |
VCE |
VGE |
VGEth(V) |
VCEsat15V |
ICE |
Technology |
| DFN8(3X3) |
Dual-N |
|
|
|
|
|
Trench |
| VB Package |
Configuration |
VDS(V) |
VGS |
Vthyp（V） |
ID(A) |
Rds18 |
Technology |
| DFN8(3X3) |
Dual-N |
20V |
|
0.5~1.5V |
9.4A |
|
Trench |
| VB Package |
Configuration |
VDS(V) |
VGS |
Vthyp（V） |
ID(A) |
Rds6 |
Technology |
| DFN8(3X3) |
Dual-N |
20V |
|
0.5~1.5V |
9.4A |
|
Trench |
| VB Package |
Polarity |
Vz / VR |
Pd |
VF |
IF |
IR |
Cd |
Type |
| DFN8(3X3) |
Dual-N |
|
|
|
|
|
|
|
**Detailed parameter description:**
- **Model:** SI7904DN-VB
- **Package:** DFN8(3X3)
- **Configuration:** Dual N-type MOSFET (dual-tube design)
- **VDS (drain-source voltage):** 20V (maximum)
- **VGS (gate-source voltage):** ±20V (maximum)
- **Vth (throw-on voltage):** 0.5V ~ 1.5V
- **RDS(ON):** 12mΩ @ VGS = 4.5V
- **RDS(ON):** 10mΩ @ VGS = 10V
- **ID (drain current):** 9.4A (maximum)
- **Technology:** Trench (deep trench technology)
- **Operating temperature range:** -55°C to +150°C (please refer to the data sheet for the specific range)
Domain and module applications：
**Application fields and module examples:**
1. **Power management and DC-DC converters:**
- **Application fields:** High-efficiency power conversion, battery-powered devices, power adapters
- **SI7904DN-VB** can be widely used in DC-DC converters in power management systems, especially in low-voltage battery-powered devices. Its low on-resistance characteristics enable it to reduce power loss during high current transmission and improve power conversion efficiency.
- **Example:** In the battery management module of a smartphone, MOSFETs can be used to ensure efficient control of battery current during battery charging and discharging, and optimize battery life.
2. **Mobile devices and consumer electronics:**
- **Application fields:** Mobile power supplies, portable devices, smart watches, wireless headphones
- **SI7904DN-VB** is suitable for power management and small battery-powered systems in mobile devices, especially those consumer electronics products with high requirements for size and efficiency. Its small package (DFN8 3x3) makes it suitable for designs with limited space, while being able to handle higher currents, ensuring the device remains stable under long-term use.
- **Example:** In wireless headphones and smart watches, MOSFETs are used for battery charging and power management, providing stable current output and fast charging performance.
3. **Power Tools and Portable Devices:**
- **Application Areas:** Power Tools, Battery-Powered Devices
- **SI7904DN-VB** can be used as a power control switch in power tools and other portable battery-powered devices to help control the battery charging and discharging process. Its low on-resistance helps improve battery efficiency, reduce heat generation, and extend the life of the device.
- **Example:** In the battery management system of an electric screwdriver, MOSFETs are used to manage the battery current flow, ensuring efficient and safe charging and discharging.
4. **Automotive electronics and battery management:**
- **Application areas:** Battery management systems, electric vehicles (EV) and hybrid electric vehicles (HEV)
- **SI7904DN-VB** is suitable for battery management systems (BMS) and electric vehicles (EV). It can efficiently manage battery charging and discharging, optimize battery efficiency, ensure efficient operation of the battery pack, and extend battery life. Especially in applications that need to control high current loads, low RDS(ON) and high ID can ensure stable battery management performance.
- **Example:** In the BMS of electric vehicles, MOSFET controls the charging and discharging current of the battery to ensure the safety of the battery and the endurance of the electric vehicle.
5. **Power switching and load control:**
- **Application areas:** Load control switch, LED driver, battery-powered equipment
- **SI7904DN-VB** is also suitable for power switching and load control applications. Its dual N-type MOSFET architecture can control multiple loads at the same time, and due to its low on-resistance, it can effectively reduce losses when the load is large.
- **Example:** In the LED drive circuit, MOSFET can be used to adjust the current of the LED to ensure its stable operation and improve the overall efficiency of the system.
* 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
Technical support：
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