Pinout of AO4407

AO4407's pinout typically consists of three key pins:

Source (S): This is where the current enters the MOSFET. In a P-channel MOSFET, the source is typically connected to the positive voltage (e.g., a power rail).

Gate (G): The gate controls the flow of current between the source and drain. Applying a negative voltage relative to the source turns the MOSFET on, allowing current to flow.

Drain (D): This is where the current exits the MOSFET when it is turned on.

Circuits of AO4407

The primary function of the AO4407 is to control the switching state of current. As a P-channel MOSFET device, its source is typically connected to the positive terminal of the power supply, the drain is connected to one end of the load, and the gate is used to control the on and off states. By adjusting the gate voltage, the switching state of the MOSFET can be controlled.

When the gate voltage is sufficiently negative relative to the source, the MOSFET turns on, allowing current to flow from the source to the drain, driving the load. When the gate voltage approaches the source voltage, the MOSFET turns off, preventing current from flowing and stopping the load from being powered.

In the circuit, the gate is controlled by a circuit (such as a microcontroller) that adjusts the voltage to switch the MOSFET on or off. In battery protection circuits, it acts as a switching component, preventing issues like overcurrent or overvoltage from damaging the battery.

Specifications of AO4407

Type: P-Channel MOSFET

Drain to Source Voltage (Vdss): 30 V

Maximum Gate-Source Voltage (Vgs): ±25V

Current - Continuous Drain (Id) @ 25°C: 12A (Ta)

Drive Voltage (Max Rds On, Min Rds On): 5V, 20V

Rds On (Max) @ Id, Vgs: 13mOhm @ 12A, 20V

Pulsed Drain Current (Id): -30A

Vgs(th) (Max) @ID: 2.8V @ 250µA

Gate Charge (Qg) (Max) @ Vgs: 36 nC @ 10 V

Drain Source On Resistance (Rds(on)): 0.025Ω

Input Capacitance (Ciss) (Max) @ Vds: 2600 pF @ 15 V

Power Dissipation (Pd): 3.1W (Ta)

Package Type: 8-SOIC

Operating Temperature Range: -55°C ~ 150°C (TJ)

Features of AO4407

Extremely Low On-resistance

High Current Capability

Advanced Trench Technology

Low Gate Threshold Voltage

Thermal Performance

Overcurrent Protection

Package of AO4407

The AO4407 features an 8-SOIC package. This compact package is ideal for electronic devices with space constraints. It has 4 pins on each side, for a total of 8 pins, arranged in a compact layout for easy soldering onto circuit boards. The package design offers efficient heat dissipation, ensuring stable operation. Additionally, the 8-SOIC package utilizes surface-mount technology (SMT), which facilitates automated production and improves assembly efficiency.

Where to Use AO4407?

The AO4407 is mainly used in applications that require low on-resistance and efficient current control. It is well-suited as a load switch, especially in portable devices, where it helps optimize power management. Additionally, it is commonly used in battery protection circuits to prevent overcurrent or overvoltage from damaging the battery or device. In these applications, the AO4407 serves as a switching element, effectively controlling current flow. Furthermore, the AO4407 is also suitable for power management modules, DC-DC converters, and other electronic devices requiring efficient switching control.

How to Select and Use AO4407?

First, check the operating voltage and current specifications of the device, and consider factors such as power dissipation capacity, operating temperature range, switching speed, and so on.

Next, proceed with circuit design. Connect the source of the AO4407 to the positive terminal of the power supply, the drain to the load, and the other end of the load to the ground. On the gate side, use an appropriate control circuit to regulate the voltage and control the switching on and off of the AO4407. When the gate voltage is sufficiently negative relative to the source voltage, the MOSFET turns on, allowing current to flow to the load; when the gate voltage is close to the source voltage, the MOSFET turns off.

Finally, debug and test the circuit. After powering on, check if the AO4407 switches on and off correctly, and monitor whether the current flows through the load as designed.

FAQs

What is AO4407 used for?

The AO4407 is commonly used in load switching applications, battery protection circuits, and power management systems.

What is the RDS(ON) value of the AO4407?

The AO4407 offers a very low RDS(ON) value, which minimizes power losses and heat generation during operation, making it suitable for high-efficiency applications.

How does the AO4407 protect the circuit?

In battery protection circuits, the AO4407 acts as a switch, preventing overcurrent or overvoltage from damaging the battery or device by controlling the flow of current.