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Product attributes Property Value
Manufacturer Microchip Technology
Product Series
Packaging Tube |
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Fixed
Number of Outputs 1
Voltage - Input (Min) 4V
Voltage - Input (Max) 40V
Voltage - Output (Min/Fixed) 12V
Voltage - Output (Max) -
Current - Output 1A
Frequency - Switching 52kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 16-DIP (0.300", 7.62mm)
Supplier Device Package 16-DIP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip Technology LM2575-12YN is a simple step-down DC-DC converter that provides a fixed 12V output from a 4V to 40V input. It can deliver up to 1A of load current with a switching frequency of 52kHz. The device is available in a 16-DIP package, making it suitable for through-hole assembly and prototyping. Its wide input range and robust design make it a reliable choice for industrial and automotive applications.

  • Wide Input Range: 4V to 40V input handles automotive and industrial voltage variations.
  • Simple Design: Requires only a few external components, simplifying PCB layout.
  • Robust Protection: Includes thermal shutdown and current limiting for reliable operation.
  • Through-Hole Package: 16-DIP package is easy to solder and replace in legacy designs.

Automotive Power Supplies

Regulates 12V from a 24V truck battery or 12V bus with transients up to 40V. The wide input range handles load-dump conditions.

Industrial Control Systems

Provides a stable 12V rail for PLCs, motor controllers, and sensors from 24V or 48V supplies. The 1A output is sufficient for logic and small actuators.

Telecom Equipment

Converts 48V telecom buses down to 12V for line cards and routers. The simple design requires minimal external components.

Battery Chargers

Used as a pre-regulator for 12V lead-acid or Li-Ion battery charging circuits. The 52kHz frequency reduces audible noise.

HVAC Systems

Powers control boards and valve actuators from 24V AC/DC supplies. The robust design withstands voltage spikes.

Test and Measurement

Provides a clean 12V supply for bench instruments and data acquisition systems. The through-hole DIP package is easy to prototype.

Q: What type of converter is the LM2575-12YN?
A: It is a step-down (Buck) DC-DC converter.
Q: What is the input voltage range?
A: The input voltage range is 4V to 40V.
Q: What is the output voltage?
A: The fixed output voltage is 12V.
Q: What is the maximum output current?
A: It can deliver up to 1A.
Q: What is the switching frequency?
A: It operates at 52kHz.
Q: What package is available?
A: It comes in a 16-DIP package.
Base Product Number : LM2575-12
12V Output 16-DIP 1A 4V-40V 52kHz Automotive Buck DC-DC Converter Industrial Microchip Step-Down Telecom
Q: What type of converter is the LM2575-12YN?
A: It is a step-down (Buck) DC-DC converter.
Q: What is the input voltage range?
A: The input voltage range is 4V to 40V.
Q: What is the output voltage?
A: The fixed output voltage is 12V.
Q: What is the maximum output current?
A: It can deliver up to 1A.
Q: What is the switching frequency?
A: It operates at 52kHz.
Q: What package is available?
A: It comes in a 16-DIP package.