LM2575HVS-ADJ Series

series introduction

# Introduction to the LM2575HVS - ADJ Product Series

## 1. Overview
The LM2575HVS - ADJ is a highly versatile and reliable switching voltage regulator belonging to a well - regarded product series. It is designed to efficiently convert a higher input voltage to a lower, adjustable output voltage, making it an essential component in a wide range of electronic applications. This device combines high - performance features with ease of use, offering engineers and designers a cost - effective solution for power management needs.

## 2. Key Features

### 2.1 High - Voltage Capability
The "HVS" in the part number indicates its high - voltage switching ability. The LM2575HVS - ADJ can handle input voltages up to a relatively high level, typically around 60V. This makes it suitable for applications where the input power source has a wide voltage range or where the system is exposed to high - voltage transients. For example, in automotive applications, where the battery voltage can vary significantly during startup and normal operation, the high - voltage tolerance of the LM2575HVS - ADJ ensures stable power conversion.

### 2.2 Adjustable Output Voltage
One of the most significant features of the LM2575HVS - ADJ is its adjustable output voltage. By using a simple resistor divider network, the output voltage can be set to any value within a specified range. This flexibility allows designers to tailor the power supply to the specific requirements of their application. Whether it's powering a low - voltage microcontroller or a higher - voltage analog circuit, the LM2575HVS - ADJ can be configured to provide the exact voltage needed.

### 2.3 High Efficiency
Switching regulators are known for their high efficiency compared to linear regulators, and the LM2575HVS - ADJ is no exception. It uses a switching topology that minimizes power dissipation, resulting in less heat generation and more efficient use of the input power. This is particularly important in battery - powered applications, where maximizing battery life is crucial. The high efficiency also reduces the need for large heat sinks, saving board space and cost.

### 2.4 Built - in Protection Features
The LM2575HVS - ADJ is equipped with several built - in protection features to ensure the reliability and safety of the power supply. These include over - current protection (OCP) and thermal shutdown. Over - current protection limits the output current to a safe level in case of a short - circuit or overload condition, preventing damage to the regulator and other components in the system. Thermal shutdown activates when the device temperature exceeds a certain threshold, protecting the regulator from overheating and potential failure.

### 2.5 Fixed Frequency Operation
The regulator operates at a fixed frequency, typically around 52kHz. This fixed - frequency operation simplifies the design of the external components, such as the inductor and capacitor. It also reduces the electromagnetic interference (EMI) generated by the switching process, making it easier to meet electromagnetic compatibility (EMC) requirements in various applications.

## 3. Applications

### 3.1 Industrial Power Supplies
In industrial settings, there is often a need to convert high - voltage AC or DC power sources to lower, regulated voltages for powering control circuits, sensors, and other electronic devices. The LM2575HVS - ADJ's high - voltage tolerance and adjustable output voltage make it an ideal choice for these applications. It can handle the wide voltage variations commonly found in industrial power systems and provide a stable power supply to critical components.

### 3.2 Automotive Electronics
Automotive electronics require power supplies that can withstand the harsh electrical environment of a vehicle. The LM2575HVS - ADJ's high - voltage capability and protection features make it

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Datasheets

Partlist

LM2575HVS-ADJ

LM2575HVS-ADJ/NOPB