Micrel Inc. LM2574-12BWM
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.16 | $4.16 |
| 15+ | $0.96 | $14.40 |
| 25+ | $0.94 | $23.50 |
| 50+ | $0.88 | $44.00 |
| 100+ | $0.78 | $78.00 |
| N+ | $0.16 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Micrel Inc. |
| Product Series | |
| Packaging | Bulk | |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | - |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 12V |
| Voltage - Output (Max) | - |
| Current - Output | 500mA |
| Frequency - Switching | 52kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 14-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 14-SOIC |
The LM2574-12BWM is a 500mA step-down (buck) switching regulator from Micrel Inc. It accepts input voltages up to 40V and provides a fixed 12V output. Operating at 52kHz, it offers a good balance between efficiency and external component size. The 14-SOIC package is ideal for space-constrained industrial and automotive applications requiring a reliable 12V rail.
- Wide Input Range (up to 40V): Handles unregulated supplies and automotive transients without additional front-end protection.
- Fixed 12V Output: Eliminates external resistor dividers, simplifying design and reducing BOM count.
- 500mA Output Current: Sufficient for low-power logic, sensors, and interface circuits.
- 52kHz Switching Frequency: Balances efficiency with manageable EMI filtering requirements.
- SOIC-14 Package: Industry-standard footprint for easy PCB layout and manufacturing.
12V Industrial Control Systems
Provides a regulated 12V rail from unregulated 24V or 36V industrial supplies. The 52kHz switching frequency allows for smaller external components while maintaining stable operation in noisy environments.
Automotive Infotainment
Steps down 12V-40V vehicle battery voltage to a clean 12V supply for audio amplifiers or display modules. The wide input range handles load-dump transients without requiring additional protection circuitry.
Telecom Power Distribution
Converts 24V or 48V backplane voltages to 12V for line cards and interface modules. The 500mA output is ideal for low-power digital logic and interface transceivers.
HVAC Controllers
Powers 12V relay drivers and valve actuators from a 24V AC/DC supply. The buck topology ensures efficient step-down with minimal heat generation in enclosed thermostat housings.
LED Lighting Drivers
Drives 12V LED strips or modules from a 24V power source. The constant 12V output maintains consistent brightness and color temperature across multiple LED strings.
Portable Test Equipment
Regulates battery voltage (up to 40V) down to 12V for sensor excitation and signal conditioning circuits. The SOIC package is suitable for compact handheld designs.
- Q: What type of converter is the LM2574-12BWM?
- A: It is a Buck (step-down) DC-DC converter.
- Q: What is the input voltage range?
- A: The maximum input voltage is 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 500mA.
- Q: What is the switching frequency?
- A: The switching frequency is 52kHz.
- Q: What package is available?
- A: It comes in a 14-SOIC (0.295", 7.50mm Width) package.
LM2574-12BWM.pdf
- Q: What type of converter is the LM2574-12BWM?
- A: It is a Buck (step-down) DC-DC converter.
- Q: What is the input voltage range?
- A: The maximum input voltage is 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 500mA.
- Q: What is the switching frequency?
- A: The switching frequency is 52kHz.
- Q: What package is available?
- A: It comes in a 14-SOIC (0.295", 7.50mm Width) package.
