National Semiconductor LM2575M-3.3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $3.08 | $3.08 |
| 15+ | $0.71 | $10.65 |
| 25+ | $0.69 | $17.25 |
| 50+ | $0.65 | $32.50 |
| 100+ | $0.58 | $58.00 |
| N+ | $0.12 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | SIMPLE SWITCHER® |
| Packaging | Bulk | |
| 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) | 3.3V |
| Voltage - Output (Max) | - |
| Current - Output | 1A |
| Frequency - Switching | 52kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 24-SOIC |
The LM2575M-3.3 from National Semiconductor is a simple, reliable Buck DC-DC converter designed for high-voltage applications. It accepts a wide input voltage from 4V to 40V and provides a fixed 3.3V output with a load current capability of 1A. Operating at a low 52kHz switching frequency, it offers excellent noise immunity and is well-suited for industrial and automotive environments where robustness is critical.
- Wide Input Voltage Range: Handles 4V to 40V inputs, making it suitable for automotive and industrial power rails.
- High Output Current: Delivers up to 1A, sufficient for powering MCUs, sensors, and small logic circuits.
- Proven Reliability: The 52kHz frequency and simple architecture ensure stable operation in noisy environments.
- Simple Design: Requires minimal external components, simplifying PCB layout and BOM.
Automotive Power Supplies
With a wide 4V to 40V input range, it can regulate 3.3V logic rails directly from a 12V or 24V vehicle battery system, handling load dumps and transients.
Industrial Control Systems
Provides a robust 3.3V supply for PLCs, motor controllers, and sensors operating from 24V industrial power buses.
Telecom and Networking Equipment
Steps down 48V telecom rails to 3.3V for line cards, switches, and routers, simplifying power distribution.
White Goods and Appliances
Powers microcontrollers and user interfaces in washing machines, refrigerators, and air conditioners from a rectified AC supply.
Battery Charging Systems
Can be used to create a regulated 3.3V auxiliary supply for monitoring and control circuits in larger battery chargers.
Distributed Power Architectures
Serves as an intermediate bus converter to generate a local 3.3V rail from a higher voltage backplane.
- Q: What type of converter is the LM2575M-3.3?
- 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 40V.
- Q: What is the output voltage?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: The maximum output current is 1A.
- Q: What is the switching frequency?
- A: The switching frequency is 52kHz.
- Q: What package is available?
- A: It is available in a 24-SOIC (0.295", 7.50mm Width) package.
LM2575M-3.3.pdf
- Q: What type of converter is the LM2575M-3.3?
- 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 40V.
- Q: What is the output voltage?
- A: The fixed output voltage is 3.3V.
- Q: What is the maximum output current?
- A: The maximum output current is 1A.
- Q: What is the switching frequency?
- A: The switching frequency is 52kHz.
- Q: What package is available?
- A: It is available in a 24-SOIC (0.295", 7.50mm Width) package.
