IRLML2502TRPBF Detailed explanation of pin function specifications and circuit principle instructions

The part number IRLML2502TRPBF is a product from Infineon Technologies. It is a N-channel MOSFET (Metal-Oxide-Semiconductor Field-Effect transistor ) designed for switching and amplification purposes. Below is a detailed explanation of its pin functions, packaging information, and an FAQ section addressing common concerns.

1. Package Type:

IRLML2502TRPBF is typically available in a SOT-23 package, which is a small-outline transistor (SOT) package. The SOT-23 package is a surface-mount type, commonly used for compact, low-power devices.

2. Pin Configuration for IRLML2502TRPBF:

The IRLML2502TRPBF comes with 3 pins. Here’s a detailed description of each:

Pin Number Pin Name Pin Function Pin 1 Drain (D) This is the drain of the MOSFET, where current flows out. In an N-channel MOSFET, the drain is connected to the load. This pin is used for controlling the flow of current between the source and drain. Pin 2 Gate (G) The gate controls the operation of the MOSFET. A positive voltage at the gate allows current to flow between the drain and source. It functions as the input signal to switch the MOSFET on or off. Pin 3 Source (S) The source is the reference point for the gate-source voltage (Vgs) and the source current. Current flows from the source to the drain when the MOSFET is on. This pin is typically connected to ground or the negative terminal of the power supply.

3. Circuit Principle Overview:

The IRLML2502TRPBF is a logic-level N-channel MOSFET. It operates based on the control of the gate voltage, allowing current to flow between the drain and the source when a voltage is applied at the gate. This voltage is typically provided by a logic-level signal, making it suitable for low-voltage applications. Here’s how it works:

When a positive voltage (greater than the threshold voltage, Vgs(th)) is applied to the gate, it forms an electric field that allows current to flow from the source to the drain. When the gate voltage is zero or negative, the MOSFET is off, and no current flows between the source and drain. The source is usually grounded, and the drain is connected to the load.

4. Detailed Pin Function Explanation:

Pin 1 (Drain): This pin is where the current exits the MOSFET. The voltage at the drain is determined by the circuit design and can be higher than the source voltage.

Pin 2 (Gate): The voltage at this pin controls the MOSFET. A positive voltage (greater than the threshold voltage, typically around 1.5V) between the gate and source will turn the MOSFET on and allow current to flow between the drain and source. When the gate voltage is zero or negative, the MOSFET remains off, and no current flows between the drain and source.

Pin 3 (Source): This is the pin that connects to the negative side of the power supply or ground. The voltage difference between the gate and source (Vgs) controls the switching of the MOSFET.

5. FAQ (Frequently Asked Questions) for IRLML2502TRPBF:

Here’s a list of 20 common questions and answers about the IRLML2502TRPBF:

Question Answer 1. What is the maximum gate-source voltage for IRLML2502TRPBF? The maximum gate-source voltage (Vgs) for the IRLML2502TRPBF is ±12V. 2. What is the threshold voltage of the IRLML2502TRPBF? The threshold voltage (Vgs(th)) for the IRLML2502TRPBF is typically between 1.0V to 3.0V. 3. What is the maximum drain current? The IRLML2502TRPBF can handle a maximum continuous drain current (Id) of 1.5A. 4. What is the maximum power dissipation for the IRLML2502TRPBF? The maximum power dissipation is 1.25W under normal operating conditions. 5. What is the typical Rds(on) for this MOSFET? The typical on-state resistance (Rds(on)) for the IRLML2502TRPBF is 0.085Ω at Vgs = 4.5V. 6. Can the IRLML2502TRPBF be used for high-power applications? The IRLML2502TRPBF is designed for low-power applications, so it is not ideal for high-power applications where higher current and voltage are involved. 7. What is the package type for IRLML2502TRPBF? The IRLML2502TRPBF comes in a SOT-23 package. 8. What is the lead-free status of the IRLML2502TRPBF? Yes, the IRLML2502TRPBF is lead-free, as indicated by the “PbF” in its part number. 9. What is the maximum operating temperature for IRLML2502TRPBF? The maximum operating junction temperature is 150°C. 10. Can the IRLML2502TRPBF be used for switching applications? Yes, the IRLML2502TRPBF is designed for use in switching applications. 11. What is the gate charge (Qg) for the IRLML2502TRPBF? The total gate charge (Qg) for this MOSFET is 6.0nC (typical). 12. Is IRLML2502TRPBF suitable for digital circuits? Yes, it is suitable for digital circuits due to its logic-level gate control. 13. What is the typical application of IRLML2502TRPBF? It is commonly used in low-power switching circuits, voltage regulation, and signal amplification. 14. Does IRLML2502TRPBF support both N-channel and P-channel operation? No, it only supports N-channel operation. 15. What is the drain-source voltage rating for IRLML2502TRPBF? The maximum drain-to-source voltage (Vds) is 20V. 16. Is there a protection circuit for over-voltage in IRLML2502TRPBF? The IRLML2502TRPBF has intrinsic body diode protection for over-voltage situations. 17. How can I connect IRLML2502TRPBF to a microcontroller? The gate pin (Pin 2) of IRLML2502TRPBF can be connected to a microcontroller’s GPIO pin, while the drain and source are connected as per the load circuit design. 18. Is the IRLML2502TRPBF compatible with 3.3V logic? Yes, it is compatible with 3.3V logic as it is a logic-level MOSFET. 19. Can I use IRLML2502TRPBF for PWM applications? Yes, IRLML2502TRPBF is well-suited for Pulse Width Modulation (PWM) applications due to its fast switching capabilities. 20. What is the switching time of IRLML2502TRPBF? The typical rise time (tr) and fall time (tf) are 15ns each.

Conclusion:

The IRLML2502TRPBF is a versatile and efficient N-channel MOSFET from Infineon Technologies, with a SOT-23 package and 3 pins. It’s suitable for low-power switching applications and is driven by a logic-level gate voltage. Understanding the pin functions and typical application scenarios will help you use this MOSFET in your electronic circuits effectively.

Let me know if you need more details or clarification!