Part Number: IR3898MTRPBF

Manufacturer: Infineon Technologies


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of IR3898MTRPBF

Datasheet  IR3898MTRPBF datasheet
Category Integrated Circuits (ICs)
Family PMIC – Voltage Regulators – DC DC Switching Regulators
Manufacturer Infineon Technologies
Series SupIRBuck?
Packaging Tape & Reel (TR)
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage – Input (Min) 1V
Voltage – Input (Max) 21V
Voltage – Output (Min/Fixed) 0.5V
Voltage – Output (Max) 18.06V
Current – Output 6A
Frequency – Switching 300kHz ~ 1.5MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 16-PowerVQFN
Supplier Device Package 16-PowerQFN

IR3898MTRPBF Introduction

The IR3898MTRPBF SupIRBuckTM is a highly efficient and fully integrated DC/DC regulator with a number of features that make power supplies accurate and reliable. With its PWM controller and MOSFETs already built in, the IR3898MTRPBF is a space-saving option for a number of applications. This detailed guide will go over the most important things about the IR3898MTRPBF, such as how it works, how it can be programmed, how it protects itself, and what it can do for you.

Overview of the IR3898MTRPBF

The IR3898MTRPBF is a fully integrated, state-of-the-art DC/DC regulator that works well and is easy to use. This regulator is made for a wide range of uses. It has advanced features and uses space efficiently to meet the needs of current power delivery systems.

The PWM processor and MOSFETs that are built into the IR3898MTRPBF are some of its best features. This integration gets rid of the need for external parts, which makes it a space-saving way to control power. The PWM processor makes sure that the voltage is kept at the right level so that the power is delivered correctly and the system stays stable.

The IR3898MTRPBF’s wide input and output voltage range is another thing that stands out. Because of this, the regulator can work well in different power situations and meet the needs of different applications. The IR3898MTRPBF works well whether it’s getting a low voltage input or putting out a high voltage.

The IR3898MTRPBF makes execution easier for designers and engineers because it is easy to use and has strong features. Integrating important parts like the PWM controller and MOSFETs simplifies the circuits and makes the system as a whole less complicated. Because it is easy to use, development cycles can go faster, and power control can be done well in a wide range of applications.

In conclusion, the IR3898MTRPBF is an excellent DC/DC regulator. It has a wide range of features, such as an onboard PWM controller and MOSFETs that save room. It can be used for a wide range of tasks because its input and output power ranges are so large. The IR3898MTRPBF is a great choice for engineers and designers who need a flexible and highly efficient way to transmit power. It is easy to use and works well.

Functionality and Accurate Power Delivery

The IR3898MTRPBF is great at delivering power accurately, which is important for maintaining the speed and reliability of a system. This is made possible by the way its onboard PWM processor and MOSFETs work together to keep the voltage exactly where it needs to be.

The onboard PWM driver is a key part of controlling how the MOSFETs switch on and off. It makes a pulse-width-modulated signal that tells the regulator what its duty cycle is. By changing the duty cycle, the PWM controller is able to change the average voltage that is sent to the load. With this control mechanism, the IR3898MTRPBF can keep its output voltage stable and correct even when the input voltage or load changes.

The MOSFETs, which are built into the IR3898MTRPBF, work like switches that quickly turn on and off to control the flow of power. These MOSFETs have low on-resistance, which keeps power losses to a minimum and makes them as efficient as possible. By switching the MOSFETs quickly and efficiently, the PWM controller makes sure that the output voltage is close to the amount that is wanted. This is called precise voltage regulation.

The IR3898MTRPBF’s accurate power delivery is important for the performance and dependability of the system. Here are some key advantages:

  • Stable Operation: Accurate voltage regulation makes sure that key parts of the system get the right amount of voltage, stopping undervoltage or overvoltage. This stability helps things work well and keeps sensitive computer parts from getting damaged or not working right.
  • Improved Efficiency: An accurate power supply cuts down on wasted energy and makes the system more efficient as a whole. By perfectly meeting the power needs of the load, the IR3898MTRPBF cuts down on power losses and makes better use of energy. This improves efficiency and could make portable batteries last longer.
  • Reduced System Stress: When power is delivered precisely, components are put under less stress and work within the voltage ranges they were designed for. This makes it less likely that a part will break down too soon and makes the system last longer.
  • Improved System Reliability: Precise voltage control makes sure that the system works well in a variety of situations. It reduces voltage changes and guards against possible voltage spikes, so there is less chance of damage or instability in the system.

In short, the IR3898MTRPBF’s onboard PWM processor and MOSFETs work together to give the load the right amount of power. This exact regulation of voltage has benefits like stable operation, better efficiency, less stress on the system, and more reliable operation. The IR3898MTRPBF helps the system it is a part of work better and last longer by making sure that power is delivered accurately.

Programmable Switching Frequency

The IR3898MTRPBF has a switching frequency range of 300 kHz to 1.5 MHz that can be set by the user. This ability to be programmed gives the regulator several ways to improve its performance in different situations:

  • Optimization of Efficiency: Designers can choose the switching frequency that works best for their application, reducing power losses and making the best use of energy.
  • EMI Mitigation: Changing the switching frequency helps control electromagnetic interference (EMI), which lessens its effects on other system parts and makes it easier to meet EMC standards.
  • Component Selection: Being able to set the switching frequency lets you choose the best inactive parts based on their size, cost, and availability.

Noise is something to think about. Different applications have different noise needs, and adjusting the switching frequency can help reduce problems caused by noise, which can improve system performance and accuracy.

Changing the switching frequency can be helpful when you want to improve the efficiency of a light load, get a higher power density, deal with noise-sensitive applications, or deal with heat issues.

In short, the programmable switching frequency range of the IR3898MTRPBF makes it possible to improve performance in a variety of uses by maximizing efficiency, reducing EMI, choosing the right components, and controlling noise.

Benefits and Applications

The IR3898MTRPBF has many benefits for a wide range of uses, such as:

● High Efficiency and Accurate Power Delivery

The IR3898MTRPBF makes sure that power is converted efficiently and voltage is regulated accurately, which makes the best use of energy and improves system performance.

● Design that saves space and works with a wide range of voltages

Its PWM controller and MOSFETs are built in, so there’s no need for extra parts, which saves space. The large input/output voltage range makes it easy to use in a variety of power source situations.

Industrial automation, automotive systems, consumer gadgets (like smartphones and wearables), telecommunications infrastructure, and green energy systems are all good places to use IoT.

Overall, the IR3898MTRPBF is a good choice for industrial, automotive, consumer electronics, telecommunications, and renewable energy applications because it is efficient, delivers power accurately, takes up little room, and has a wide voltage range.


Overall, the IR3898MTRPBF stands as a highly versatile DC/DC regulator, offering benefits such as high efficiency, accurate power delivery, space efficiency, and adaptability to various voltage ranges. Engineers and designers are encouraged to explore the potential of the IR3898MTRPBF in their designs, unlocking the advantages it offers in power management and system performance.

At ICRFQ, we are committed to helping you use the IR3898MTRPBF to its fullest extent. Contact us today to use our knowledge and advice to help you make the most of your business.

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Kevin Chen