Overview
The LM2575T-12G is a high-efficiency, step-down switching regulator produced by onsemi. This device is part of the LM2575 series, known for its reliability and versatility in power supply applications. The LM2575T-12G is specifically designed to provide a fixed output voltage of 12V, making it suitable for a wide range of electronic systems that require stable and efficient power conversion.
The LM2575 series is characterized by its high efficiency, especially at higher input voltages, which significantly reduces power dissipation compared to traditional linear regulators. This feature makes the LM2575T-12G an excellent choice for applications where energy efficiency and thermal management are critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.75 to 40 | V |
| Output Voltage | 12 | V |
| Output Current | 1.0 | A |
| Oscillator Frequency | 52 kHz (typical) | kHz |
| Efficiency | Up to 88% (at Vin = 15V, ILoad = 1A) | % |
| Operating Junction Temperature Range | -40 to +125 | °C |
| Thermal Shutdown | Yes | |
| Current Limit Protection | Yes | |
| Standby Quiescent Current | 15 to 80 μA (typical) | μA |
| Package Type | TO-220 (Straight Lead) |
Key Features
- High efficiency, up to 88% in certain configurations, reducing power dissipation and the need for large heatsinks.
- Guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions.
- Fixed 52 kHz internal oscillator frequency.
- TTL shutdown capability with low power standby mode.
- Thermal shutdown and cycle-by-cycle current limiting for protection under fault conditions.
- Requires only 4 external components for operation.
- Uses readily available standard inductors.
- AEC-Q100 qualified and PPAP capable, suitable for automotive and other demanding applications.
- Pb-free device.
Applications
The LM2575T-12G is versatile and can be used in a variety of applications, including:
- Power supplies for battery chargers and other electronic devices.
- Automotive systems requiring high reliability and efficiency.
- Industrial control systems and automation.
- Telecommunication equipment.
- Medical devices and equipment.
Q & A
- What is the output voltage of the LM2575T-12G?
The output voltage of the LM2575T-12G is fixed at 12V.
- What is the input voltage range for the LM2575T-12G?
The input voltage range is from 4.75V to 40V.
- What is the maximum output current of the LM2575T-12G?
The maximum output current is 1.0A.
- Does the LM2575T-12G have thermal shutdown protection?
Yes, it includes thermal shutdown protection.
- What is the oscillator frequency of the LM2575T-12G?
The oscillator frequency is fixed at 52 kHz.
- Is the LM2575T-12G suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other demanding applications.
- How many external components are required for the LM2575T-12G to operate?
Only 4 external components are required.
- What is the typical standby quiescent current of the LM2575T-12G?
The typical standby quiescent current is 15 to 80 μA.
- Is the LM2575T-12G a Pb-free device?
Yes, it is a Pb-free device.
- What is the operating junction temperature range of the LM2575T-12G?
The operating junction temperature range is -40°C to +125°C.
