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Product attributes Property Value
Manufacturer Microchip Technology
Product Series
Packaging Bulk |
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 24V
Voltage - Output (Min/Fixed) 3.3V
Voltage - Output (Max) -
Current - Output 500mA
Frequency - Switching 200kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm)
Supplier Device Package 8-PDIP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MIC4574-3.3YN from Microchip Technology is a fixed-output Buck DC-DC converter designed for simple, reliable 3.3V power conversion. It accepts an input voltage from 4V to 24V and delivers a regulated 3.3V output at up to 500mA. Operating at 200kHz, it provides efficient performance with minimal external components. The 8-DIP package is well-suited for through-hole assembly and prototyping. This converter is ideal for microcontroller applications, industrial controls, and consumer electronics requiring a stable 3.3V rail.

  • Fixed 3.3V Output: No external resistor divider needed, simplifying design.
  • Wide Input Range: Accepts 4V to 24V, making it versatile for various power sources.
  • Easy Integration: Through-hole DIP package is ideal for prototyping and low-volume production.
  • Stable Performance: 200kHz switching provides reliable regulation with standard inductors.

Microcontroller Power Supplies

The fixed 3.3V output is perfect for powering modern microcontrollers and digital logic. The 500mA capability supports MCU boards with peripherals and sensors.

Battery-Powered Instruments

With a 4V to 24V input, this converter efficiently regulates battery voltage to 3.3V, extending runtime in portable meters and data loggers.

Industrial Control Boards

In 12V or 24V industrial systems, the MIC4574-3.3YN provides a stable 3.3V rail for PLCs, I/O modules, and communication interfaces.

Consumer Appliances

For smart home devices and appliances, this converter steps down higher voltages to 3.3V for Wi-Fi modules and control electronics.

Networking Peripherals

Routers and switches often require a 3.3V rail for PHY chips and switch fabrics. This converter delivers clean power from a 5V or 12V source.

Prototyping and Education

The through-hole DIP package makes it ideal for breadboard prototyping and educational projects requiring a reliable 3.3V supply.

Q: What type of converter is the MIC4574-3.3YN?
A: It is a Buck (step-down) DC-DC converter.
Q: What is the input voltage range?
A: The input voltage range is 4V to 24V.
Q: What is the fixed output voltage?
A: It provides a fixed 3.3V output.
Q: What is the maximum output current?
A: It can deliver up to 500mA of output current.
Q: What is the switching frequency?
A: It operates at a 200kHz switching frequency.
Q: What package is available?
A: It comes in an 8-DIP package (0.300" width).
Base Product Number : MIC4574-3.3YN
200kHz 3.3V 4V-24V 500mA Buck DC-DC Converter DIP-8 Microchip Microcontroller
Q: What type of converter is the MIC4574-3.3YN?
A: It is a Buck (step-down) DC-DC converter.
Q: What is the input voltage range?
A: The input voltage range is 4V to 24V.
Q: What is the fixed output voltage?
A: It provides a fixed 3.3V output.
Q: What is the maximum output current?
A: It can deliver up to 500mA of output current.
Q: What is the switching frequency?
A: It operates at a 200kHz switching frequency.
Q: What package is available?
A: It comes in an 8-DIP package (0.300" width).