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IR3840WMTR1PBF

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IR3840WMTR1PBF

IC REG BUCK ADJ 12A PQFN

Manufacturer: Infineon Technologies

Categories: DC DC Switching Regulators

Quality Control: Learn More

Infineon Technologies SupIRBuck® IR3840WMTR1PBF is a highly efficient buck switching regulator IC designed for demanding applications requiring precise voltage regulation and high current output. This adjustable positive output device offers a wide input voltage range from 1.5V to 16V and can deliver up to 12A of output current. The output voltage is adjustable from 0.7V, providing flexibility for various power management designs. Featuring a switching frequency range of 225kHz to 1.65MHz, this component allows for optimized power density and transient response. The integrated synchronous rectifier enhances efficiency, minimizing power loss. Housed in a compact 15-PowerVQFN (5x6) package suitable for surface mounting, the IR3840WMTR1PBF operates across an industrial temperature range of -40°C to 125°C (TJ). It is commonly employed in power supplies for computing, industrial, and telecommunications equipment.

Additional Information

Series: SupIRBuck®RoHS Status: unknownManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: Tape & Reel (TR)Datasheet:
Technical Details:
PackagingTape & Reel (TR)
Package / Case15-PowerVQFN
Output TypeAdjustable
Mounting TypeSurface Mount
Number of Outputs1
FunctionStep-Down
Current - Output12A
Operating Temperature-40°C ~ 125°C (TJ)
Output ConfigurationPositive
Frequency - Switching225kHz ~ 1.65MHz
Voltage - Input (Max)16V
TopologyBuck
Supplier Device PackagePQFN (5x6)
Synchronous RectifierYes
Voltage - Output (Max)14.4V
Voltage - Input (Min)1.5V
Voltage - Output (Min/Fixed)0.7V

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Infineon Technologies FAQs

Infineon Technologies manufactures a wide range of semiconductor components with a strong emphasis on power electronics, automotive systems, and security solutions.

Infineon’s core components include:

  • Power semiconductors (MOSFETs, IGBTs, SiC and GaN devices)
  • Microcontrollers (MCUs) for automotive and industrial applications
  • Analog and mixed-signal ICs
  • Sensors (including radar and environmental sensors)
  • Security and authentication ICs
  • Automotive semiconductors (powertrain, ADAS, and safety systems)
  • Wireless and connectivity solutions (Bluetooth, Wi-Fi, and RF)

Infineon specializes in energy-efficient power management, secure connectivity, and high-reliability automotive solutions.

Infineon serves industries that require power efficiency, system safety, and secure connectivity.

Infineon’s key industries include:

  • Automotive and electric vehicles (EVs)
  • Industrial automation and motor control
  • Renewable energy and power infrastructure
  • Consumer electronics and home appliances
  • Internet of Things (IoT) and smart devices
  • Security and identification (payments, access control)

These industries rely on Infineon for power efficiency, system protection, and secure semiconductor solutions.

Infineon is known for power semiconductor technologies, automotive microcontrollers, and security solutions.

Key Infineon product lines include:

  • AURIX - automotive microcontrollers for safety-critical applications
  • XMC - ARM-based microcontrollers for industrial applications
  • PSoC - programmable system-on-chip solutions (via Cypress acquisition)
  • CoolMOS - high-voltage power MOSFETs
  • OptiMOS - low-voltage power MOSFETs
  • CoolSiC - silicon carbide power devices for high-efficiency systems
  • EiceDRIVER - gate driver ICs for power semiconductors
  • OPTIGA - security solutions for authentication and IoT security
Integrated Circuit FAQs

An integrated circuit (IC) is a semiconductor chip that contains transistors, resistors, capacitors, and other electronic components on a single silicon substrate. ICs are the foundation of modern electronics and power devices such as smartphones, computers, automotive systems, and industrial equipment.

Integrated circuits work by routing electrical signals through microscopic semiconductor components fabricated onto a silicon chip. Depending on the design, ICs can process, amplify, store, or control electronic data.

Integrated circuits are used in:

The different types of integrated circuits include:

Frequently Asked Questions

As a full line supplier, we specialize in sourcing obsolete and hard to find electronic components for your projects.

After we receive your request submission, one of our account executives will reach out to your team to gather more information about your project requirements and ensure we tailor the order to your needs.

Once requirements such as date codes, quantities, target prices, testing requirements, and more are discussed, our purchasing team will secure stock through Microchip USA’s direct access to manufacturing partners’ excess inventory lists.

Our operations teams will handle logistics and fulfillment to ensure supply chain continuity, and our support team will provide clear communication throughout the process.

Our net terms for electronic component sourcing are flexible and vary by order. Our account executives will work with you to ensure our terms meet your company’s needs. We also offer scheduled shipments and inventory management solutions to ensure a steady supply of electronic components, maintain cash flow, and maximize warranty periods. We always offer a warranty on all tested parts. See our sales terms and conditions for more information.

We partner with industry-leading AS6171 & AS6081-certified third party testing labs to mitigate risk and support a wide array of end uses for your company’s requirements. Testing includes but isn’t limited to: Decapsulation & Internal Dye Verification. X-Ray Inspection & Analysis, External Visual Inspection, Surface Texture Analysis (SEM), and Electrical Pin Correlation.