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IR3898MTRPBF Detailed explanation of pin function specifications and circuit principle instructions

seekdd seekdd Posted in2025-03-12 00:02:58 Views12 Comments0

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IR3898MTRPBF Detailed explanation of pin function specifications and circuit principle instructions

It seems you're asking for a very detailed technical description of a specific component, the "IR3898MTRPBF," including its pinout functions, packaging, and usage guidelines in English. I'll break it down for you, starting with some general information about the part and then progressing into a detailed pinout table and an FAQ. Here's a structured answer:

General Information on IR3898MTRPBF

The IR3898MTRPBF is a voltage regulator IC produced by Infineon Technologies (previously known as International Rectifier). This part is typically used for DC-DC conversion, offering efficient voltage regulation and high reliability for industrial and consumer electronics. The "MTRPBF" suffix indicates a QFN (Quad Flat No-lead) package with specific characteristics for the product.

Package Type and Pin Count

Package: QFN (Quad Flat No-lead) Pin Count: 28 pins

Pin Function Description

Here's a detailed list of the pins and their corresponding functions, written in table format. This will cover all the pins as per the QFN-28 packaging.

Pin Number Pin Name Pin Function Description 1 VIN Input Voltage (supply pin for the IC) 2 EN Enable pin, turns the regulator on or off 3 PGND Power Ground pin, used to connect to the system ground 4 SW1 Switch Node 1, connected to the inductor in the power stage 5 SW2 Switch Node 2, connected to the inductor in the power stage 6 VOUT Output Voltage, delivers the regulated output 7 VFB Voltage Feedback, used for voltage regulation feedback loop 8 PGOOD Power Good, indicates whether the output is within regulation 9 VCC Internal supply voltage for IC operation 10 FB2 Feedback for second stage regulation, if applicable 11 COMP Compensation pin, used to stabilize feedback loop 12 ILIM Current limit pin, sets the current limit for the regulator 13 UVLO Undervoltage Lockout, disables operation below certain voltage 14 PSENSE Power Sense, monitors output current 15 VOUT2 Secondary output voltage (if applicable) 16 GND Ground pin, common reference for the IC 17 NC No Connection, not internally connected 18 NC No Connection, not internally connected 19 NC No Connection, not internally connected 20 NC No Connection, not internally connected 21 VDRS Voltage drop sense pin, measures voltage difference across the FET 22 IOUT Output current sense pin 23 INH Inhibit pin, used to disable IC during certain conditions 24 PWM Pulse Width Modulation input, controls switching behavior 25 PGND2 Second power ground, used to connect the ground for the second stage of regulation 26 VCC2 Secondary internal voltage supply (if applicable) 27 NC No Connection, not internally connected 28 NC No Connection, not internally connected

20 Common FAQ for IR3898MTRPBF

What is the IR3898MTRPBF used for? The IR3898MTRPBF is a DC-DC buck converter that provides efficient voltage regulation for a variety of electronic applications. How many pins does the IR3898MTRPBF have? The IR3898MTRPBF comes in a 28-pin QFN package. What is the function of the VIN pin on the IR3898MTRPBF? The VIN pin is the input voltage pin where the power is supplied to the IC. How does the enable (EN) pin work? The EN pin is used to turn the IC on or off by applying a high or low voltage, respectively. What does the PGOOD pin indicate? The PGOOD pin is a signal that indicates whether the output voltage is within acceptable regulation limits. What is the purpose of the SW1 and SW2 pins? SW1 and SW2 are switch nodes that connect to the inductor, involved in the step-down conversion process. How do I monitor the output voltage with the IR3898MTRPBF? The VOUT pin is used to monitor the regulated output voltage from the IC. What is the function of the VFB pin? The VFB pin is used for voltage feedback to maintain proper output regulation. How does the IC limit the output current? The ILIM pin allows for setting the current limit to protect the system from overcurrent conditions. What is UVLO and how does it affect operation? UVLO (Undervoltage Lockout) disables the IC's operation when the input voltage is too low to ensure safe operation. What is the purpose of the COMP pin? The COMP pin is used for compensating the feedback loop to improve stability. How is the IR3898MTRPBF turned off? The IC is turned off by setting the EN pin low or by disabling the power via external logic. Can the IR3898MTRPBF be used for higher output voltages? Yes, the output voltage is adjustable through external components, typically resistors. What does the PSENSE pin monitor? The PSENSE pin is used to monitor the output current to help with regulation. What is the significance of the VCC pin? The VCC pin provides the internal power for the operation of the IC. Is the IR3898MTRPBF suitable for high-power applications? Yes, the IC is designed for high-efficiency power conversion, making it suitable for both low and high-power applications. Can the IR3898MTRPBF be used in multi-phase designs? Yes, the IC can be used in multi-phase designs to increase power delivery and efficiency. What does the PWM pin control? The PWM pin controls the switching frequency and behavior of the regulator. What is the role of the VDRS pin? The VDRS pin measures the voltage drop across the FET for efficient control. What is the difference between VOUT and VOUT2? VOUT provides the primary regulated voltage, while VOUT2 provides a secondary output if required by the application.

This is a structured overview, but depending on the level of detail required, further information could be added, such as electrical characteristics, thermal data, and specific usage guidelines. Let me know if you'd like further details or modifications!

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