Microchip Technology LM2575-3.3YN
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.76 | $4.76 |
| 15+ | $1.09 | $16.35 |
| 25+ | $1.07 | $26.75 |
| 50+ | $1.01 | $50.50 |
| 100+ | $0.89 | $89.00 |
| N+ | $0.18 | Price Inquiry |
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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) | 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 | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-DIP |
| ROHS |  |
The LM2575-3.3YN from Microchip Technology is a simple step-down buck switching regulator designed for high-efficiency power conversion. It accepts a wide input voltage from 4V to 40V and delivers a fixed 3.3V output at up to 1A of load current. Operating at a fixed 52kHz switching frequency, it allows for small external components while maintaining excellent line and load regulation. This regulator is ideal for a variety of applications including battery chargers, distributed power systems, and pre-regulators for linear regulators. Its 16-DIP package is suitable for through-hole assembly, simplifying prototyping and manufacturing.
- Wide Input Voltage Range (4V-40V): Handles unregulated supplies and automotive transients without additional protection circuitry.
- High Efficiency Buck Conversion: Switching at 52kHz minimizes power dissipation, reducing heat sink requirements in space-constrained designs.
- Simple Fixed 3.3V Output: Eliminates the need for external feedback resistors, reducing BOM count and design complexity.
- Robust 1A Output Current: Sufficient for powering microcontrollers, sensors, and small logic systems.
- Through-Hole 16-DIP Package: Facilitates easy prototyping and manual assembly, ideal for low-volume production.
Battery-Powered Industrial Equipment
With a wide 4V to 40V input range and 1A output capability, this buck converter efficiently steps down unregulated battery voltages to a stable 3.3V logic rail, extending battery life in portable industrial tools and instrumentation.
Automotive Sensor Power
The 40V maximum input handles load-dump transients in 12V automotive systems, providing a regulated 3.3V supply for sensors, microcontrollers, and CAN transceivers without requiring an external pre-regulator.
Telecom Line Cards
Deriving power from a 24V or 48V backplane, the LM2575-3.3YN delivers a clean 3.3V rail for DSPs, ASICs, and line interface circuits, simplifying thermal management with its 52kHz switching frequency.
Distributed Power Architectures
As an intermediate bus converter, it steps down a 12V or 24V bus to 3.3V for local point-of-load regulation, reducing I²R losses in PCB traces and improving overall system efficiency.
HVAC Control Boards
In building automation, the converter powers 3.3V microcontrollers and sensors from a 24V AC/DC supply, offering robust operation across the full industrial temperature range.
White Goods Appliances
For washing machines and refrigerators, the LM2575-3.3YN provides a reliable 3.3V supply for user interfaces and control electronics, withstanding mains-derived voltage variations.
- Q: What type of converter is the LM2575-3.3YN?
- A: It is a step-down (Buck) switching regulator.
- Q: What is the input voltage range?
- A: The input voltage range is 4V to 40V.
- Q: What is the fixed 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 comes in a 16-DIP (0.300", 7.62mm) package.
LM2575-3.3YN.pdf
- Q: What type of converter is the LM2575-3.3YN?
- A: It is a step-down (Buck) switching regulator.
- Q: What is the input voltage range?
- A: The input voltage range is 4V to 40V.
- Q: What is the fixed 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 comes in a 16-DIP (0.300", 7.62mm) package.
