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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 3A
Frequency - Switching 52kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case TO-220-5
Supplier Device Package TO-220-5
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LM2576-12WT from Microchip Technology is a step-down DC-DC converter delivering a fixed 12V output. It accepts a wide input voltage from 4V to 40V and provides up to 3A of continuous current. Operating at a fixed 52kHz switching frequency, it offers a reliable and efficient power solution. The TO-220-5 package provides excellent thermal dissipation, making it suitable for industrial, automotive, and telecom applications requiring a robust 12V supply.

  • High Current 12V Output: 3A capability powers multiple devices and subsystems.
  • Wide Input Flexibility: 4V to 40V input range supports various power sources and transient conditions.
  • Robust Thermal Design: TO-220-5 package with tab allows efficient heat sinking for high-reliability applications.
  • Simple External Circuitry: Fixed 52kHz frequency and 12V output minimize design complexity.

Industrial Automation

Generate a 12V rail from 24V or 48V industrial supplies for actuators, relays, and analog sensors. The 3A output can drive multiple loads, while the 40V input tolerance handles industrial power fluctuations.

Automotive Infotainment

Step down 12V-24V vehicle power to a regulated 12V supply for audio amplifiers, displays, and navigation systems. The wide input range ensures stable output during engine start-stop and load transients.

Telecom and Networking

Power 12V fans, line drivers, and small base stations from 24V or 48V backplane rails. The 3A capability supports high-current loads, and the TO-220 package allows easy heatsinking for continuous operation.

LED Lighting Systems

Drive 12V LED strips and lighting controllers from higher-voltage DC buses. The constant 12V output ensures consistent brightness, while the 52kHz switching frequency minimizes EMI in lighting environments.

Test and Measurement Equipment

Provide a stable 12V supply for bench instruments, data loggers, and signal conditioners. The robust design and thermal performance of the TO-220-5 package ensure reliable operation in lab environments.

Q: What type of converter is the LM2576-12WT?
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 3A of continuous output current.
Q: What is the switching frequency?
A: The switching frequency is 52kHz.
Q: What package is available?
A: It comes in a TO-220-5 package.
Base Product Number : LM2576-12
12V Output 3A 4V-40V 52kHz Automotive Buck DC-DC Converter Industrial Telecom TO-220-5
Q: What type of converter is the LM2576-12WT?
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 3A of continuous output current.
Q: What is the switching frequency?
A: The switching frequency is 52kHz.
Q: What package is available?
A: It comes in a TO-220-5 package.