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LM2575-12BU from MICREL

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LM2575-12BU

Manufacturer: MICREL

52kHz Simple 1A Buck Regulator

Partnumber Manufacturer Quantity Availability
LM2575-12BU,LM257512BU MICREL 30 In Stock

Description and Introduction

52kHz Simple 1A Buck Regulator The LM2575-12BU is a step-down (buck) switching regulator manufactured by **MICREL** (now part of Microchip Technology).  

### **Specifications:**  
- **Output Voltage:** Fixed 12V  
- **Output Current:** Up to 1A  
- **Input Voltage Range:** 4.75V to 40V  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 88%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-5 (D2PAK)  

### **Descriptions:**  
- The LM2575-12BU is a monolithic integrated circuit that provides all active functions for a step-down switching regulator.  
- It requires minimal external components, simplifying design.  
- Includes features like thermal shutdown and current limit protection.  

### **Features:**  
- **Fixed 12V Output** (also available in adjustable versions)  
- **Low Power Standby Mode** (IQ typically 50µA)  
- **Internal Frequency Compensation**  
- **Thermal Shutdown & Current Limiting Protection**  
- **Wide Input Voltage Range** (4.75V to 40V)  
- **Simple and Easy to Use** (requires only 4 external components)  

This regulator is commonly used in power supply applications requiring efficient step-down conversion.

Application Scenarios & Design Considerations

52kHz Simple 1A Buck Regulator
Partnumber Manufacturer Quantity Availability
LM2575-12BU,LM257512BU MIC 345 In Stock

Description and Introduction

52kHz Simple 1A Buck Regulator The LM2575-12BU is a step-down (buck) switching voltage regulator manufactured by Microchip Technology (formerly Micrel).  

### **Manufacturer:**  
- **MIC (Microchip Technology)**  

### **Specifications:**  
- **Output Voltage:** Fixed 12V  
- **Input Voltage Range:** 4.75V to 40V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 88%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-5 (D2PAK)  

### **Descriptions:**  
- A monolithic integrated circuit for step-down voltage regulation.  
- Designed for simple and efficient power supply solutions.  
- Includes a fixed-frequency oscillator, thermal shutdown, and current limit protection.  

### **Features:**  
- **Fixed 12V Output**  
- **Wide Input Voltage Range (4.75V to 40V)**  
- **Low Power Standby Mode (50µA typical)**  
- **Thermal Shutdown and Current Limit Protection**  
- **Requires Only 4 External Components**  
- **Available in TO-263 and TO-220 Packages**  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

52kHz Simple 1A Buck Regulator
Partnumber Manufacturer Quantity Availability
LM2575-12BU,LM257512BU MICREL 50 In Stock

Description and Introduction

52kHz Simple 1A Buck Regulator The LM2575-12BU is a step-down (buck) switching voltage regulator manufactured by **MICREL** (now part of Microchip Technology). Below are its key specifications, descriptions, and features based on factual data:

### **Specifications:**  
- **Output Voltage:** Fixed **12V**  
- **Input Voltage Range:** **4.75V to 40V**  
- **Output Current:** **1A (max)**  
- **Switching Frequency:** **52 kHz (typical)**  
- **Efficiency:** Up to **88%** (depending on conditions)  
- **Operating Temperature Range:** **-40°C to +125°C**  
- **Package:** **TO-263-5 (D2PAK)**  
- **Regulation Type:** **PWM (Pulse Width Modulation)**  

### **Descriptions:**  
- The LM2575-12BU is a **monolithic integrated circuit** that provides all active functions for a step-down (buck) switching regulator.  
- It is designed for **simple and cost-effective** power supply solutions with minimal external components.  
- The fixed **12V output** version eliminates the need for external feedback resistors.  

### **Features:**  
- **Fixed 12V output (±4% tolerance over line and load conditions)**  
- **Wide input voltage range (4.75V to 40V)**  
- **1A output current capability**  
- **Internal frequency compensation**  
- **Thermal shutdown and current limit protection**  
- **Low power standby mode (50µA typical shutdown current)**  
- **Requires only 4 external components** (inductor, diode, capacitor, and input capacitor)  
- **Available in a thermally enhanced TO-263 package**  

This information is sourced from the **LM2575 datasheet by MICREL**. No additional guidance or suggestions are included.

Application Scenarios & Design Considerations

52kHz Simple 1A Buck Regulator

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