Overview
The LM2576T-15, produced by Texas Instruments, is a monolithic integrated circuit designed for step-down (buck) switching regulator applications. This model is part of the LM2576 series, which is renowned for its simplicity and efficiency in power management. The LM2576T-15 specifically provides a fixed 15V output and is capable of driving a 3A load with excellent line and load regulation. Its compact design and minimal external component requirements make it an ideal choice for a wide range of power supply applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 15 | V | Fixed |
| Maximum Output Current | 3 | A | |
| Input Voltage Range | 4.75 to 40 | V | |
| Switching Frequency | 52 | kHz | Fixed |
| Efficiency | 75 to 88 | % | Varies with output voltage |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | TO-220 | 5-pin |
Key Features
- Fixed 15V output voltage simplifies design and reduces component count.
- High efficiency (up to 88%) reduces heat dissipation and improves energy usage.
- Built-in frequency compensation and fixed-frequency oscillator enhance stability and performance.
- Comprehensive protection features including thermal shutdown and current limit ensure safe operation.
Applications
The LM2576T-15 is widely used in various applications such as industrial power supplies, automotive electronics, and consumer electronics. Its robust design and efficient performance make it suitable for environments where reliability and durability are crucial. Additionally, its ability to handle a wide input voltage range makes it versatile for both low and high power applications.
Q & A
What is the maximum input voltage for the LM2576T-15?
The maximum input voltage for the LM2576T-15 is 40V.
Can the LM2576T-15 be used in automotive applications?
Yes, the LM2576T-15 is suitable for automotive applications due to its robust design and wide operating temperature range.
What is the typical efficiency of the LM2576T-15?
The typical efficiency ranges from 75% to 88%, depending on the output voltage and load conditions.
Does the LM2576T-15 require external components?
Yes, it requires only four external components to operate, which simplifies the design process.
What protection features does the LM2576T-15 include?
It includes thermal shutdown and current limit protection to ensure safe operation under fault conditions.
What is the switching frequency of the LM2576T-15?
The switching frequency is fixed at 52kHz.
Is the LM2576T-15 available in other output voltages?
Yes, the LM2576 series includes other fixed output voltages (3.3V, 5V, 12V) and an adjustable version.
What is the operating temperature range of the LM2576T-15?
The operating temperature range is from -40°C to +125°C.
Can the LM2576T-15 be used in battery-powered applications?
Yes, its low power consumption and high efficiency make it suitable for battery-powered applications.
What package does the LM2576T-15 come in?
The LM2576T-15 comes in a TO-220 package with 5 pins.
