Overview
The LM2575-5.0WU-TR is a high-efficiency step-down switching regulator produced by Microchip Technology. This monolithic integrated circuit is designed to provide a fixed 5V output voltage and is part of the LM2575 series, which offers adjustable output voltage versions ranging from 1.23V to 37V. The regulator is known for its high efficiency, reducing the need for large heat sinks and making it suitable for a variety of applications where space and power efficiency are critical.
Key Specifications
| Attribute | Description |
|---|---|
| Manufacturer | Microchip Technology |
| Part Number | LM2575-5.0WU-TR |
| Package Style | TO-263-5 (D2PAK5) |
| Mounting Method | Surface Mount |
| Input Voltage Range | 4V to 40V |
| Output Voltage | Fixed 5V |
| Output Current (Max) | 1A |
| Switching Frequency | 52kHz |
| Efficiency | Typically > 80% |
| Operating Temperature Range | -40°C to +125°C (TJ) |
| Protection Features | Thermal shutdown and current limit protection |
Key Features
- High efficiency replacement for three-terminal adjustable linear regulators, reducing heat sink size.
- Fixed output voltage versions (3.3V, 5V, 12V) and adjustable output voltage versions.
- Guaranteed 1A output current.
- Wide input voltage range: 4V to 40V.
- Wide output voltage range: 1.23V to 37V for adjustable versions.
- Requires only 4 external components.
- 52kHz fixed frequency internal oscillator.
- Low power standby mode IQ typically < 200µA.
- Thermal shutdown and current limit protection.
- 100% electrical thermal limit burn-in.
- Uses readily available standard inductors.
- Stable with low ESR output capacitors.
- Good transient response.
Applications
- Simple high-efficiency step-down (buck) regulator.
- Efficient pre-regulator for linear regulators.
- On-card switching regulators.
- Positive to negative converter (inverting buck-boost).
- Isolated flyback converter using a minimum number of external components.
- Negative boost converter.
- Consumer electronics.
- Communication devices.
- PCs and servers.
- Industrial controls.
Q & A
- What is the LM2575-5.0WU-TR?
The LM2575-5.0WU-TR is a high-efficiency step-down switching regulator produced by Microchip Technology.
- What is the output voltage of the LM2575-5.0WU-TR?
The output voltage is fixed at 5V.
- What is the maximum output current of the LM2575-5.0WU-TR?
The maximum output current is 1A.
- What is the input voltage range of the LM2575-5.0WU-TR?
The input voltage range is from 4V to 40V.
- What is the switching frequency of the LM2575-5.0WU-TR?
The switching frequency is 52kHz.
- Does the LM2575-5.0WU-TR have any protection features?
Yes, it includes thermal shutdown and current limit protection.
- What is the efficiency of the LM2575-5.0WU-TR?
The efficiency is typically greater than 80%.
- How many external components are required for the LM2575-5.0WU-TR?
It requires only 4 external components.
- What is the operating temperature range of the LM2575-5.0WU-TR?
The operating temperature range is -40°C to +125°C (TJ).
- What are some common applications of the LM2575-5.0WU-TR?
Common applications include simple high-efficiency step-down regulators, efficient pre-regulators for linear regulators, on-card switching regulators, and more.
- What package style does the LM2575-5.0WU-TR come in?
The package style is TO-263-5 (D2PAK5).
