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LM2575

1.0A Step Down Switching voltage Regulator Adjustable & Fix Output

Partnumber Manufacturer Quantity Availability
LM2575 17 In Stock

Description and Introduction

1.0A Step Down Switching voltage Regulator Adjustable & Fix Output The LM2575 is a step-down (buck) switching voltage regulator manufactured by Texas Instruments (formerly National Semiconductor). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.75V to 40V  
- **Output Voltage Options:**  
  - Fixed: 3.3V, 5V, 12V, 15V, or adjustable (1.23V to 37V)  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 52 kHz (fixed)  
- **Efficiency:** Up to 80% (depending on input/output conditions)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Options:** TO-220, TO-263 (D2PAK), and through-hole packages  

### **Descriptions:**  
The LM2575 is a monolithic integrated circuit designed for step-down voltage regulation. It simplifies power supply design by requiring minimal external components. It includes a fixed-frequency oscillator, feedback control, and an internal switch to provide efficient DC-DC conversion.  

### **Features:**  
- **Simple Design:** Requires only four external components (inductor, diode, capacitor, and feedback resistors for adjustable versions).  
- **Internal Current Limiting & Thermal Shutdown:** Protects the device from overloads and overheating.  
- **Low Power Standby Mode:** Consumes minimal current in shutdown mode (50µA typical).  
- **Wide Input Voltage Range:** Suitable for automotive, industrial, and battery-powered applications.  
- **Stable Operation:** Fixed-frequency PWM control ensures predictable performance.  

The LM2575 is commonly used in power supplies, battery chargers, and other applications requiring efficient voltage step-down conversion.

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