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LM2595SX-3.3 from NS,National Semiconductor

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LM2595SX-3.3

Manufacturer: NS

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2595SX-3.3,LM2595SX33 NS 220 In Stock

Description and Introduction

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator The LM2595SX-3.3 is a step-down (buck) switching voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 3.3V (fixed)  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 150 kHz  
- **Efficiency:** Up to 88%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-5 (D2PAK)  
- **Regulation Type:** PWM (Pulse Width Modulation)  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**  
The LM2595SX-3.3 is a monolithic integrated circuit that provides all active functions for a step-down switching regulator. It is designed for easy implementation and requires minimal external components. The fixed 3.3V output version simplifies design by eliminating the need for external feedback resistors.  

### **Features:**  
- Simple and easy-to-use buck regulator  
- Requires only 4 external components  
- Internal frequency compensation  
- Low standby current (80 µA typical)  
- Adjustable soft-start capability  
- TTL shutdown capability  
- High efficiency over a wide load range  
- Available in a thermally enhanced package  

This regulator is commonly used in power supply applications for industrial, automotive, and consumer electronics.

Application Scenarios & Design Considerations

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator
Partnumber Manufacturer Quantity Availability
LM2595SX-3.3,LM2595SX33 NSC 4 In Stock

Description and Introduction

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator The LM2595SX-3.3 is a step-down (buck) switching voltage regulator manufactured by National Semiconductor (NSC). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** Fixed 3.3V  
- **Input Voltage Range:** 4.5V to 40V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 150 kHz (fixed)  
- **Efficiency:** Up to 88%  
- **Dropout Voltage:** Typically 1.5V at full load  
- **Operating Junction Temperature Range:** -40°C to +125°C  
- **Package:** TO-263-5 (D2PAK)  

### **Descriptions:**
- The LM2595SX-3.3 is a monolithic integrated circuit designed for step-down voltage regulation.  
- It includes a fixed-frequency oscillator, feedback control, and an internal switch to simplify power supply design.  
- The device is optimized for high efficiency and minimal external component requirements.  

### **Features:**
- **Fixed 3.3V Output** (also available in adjustable versions)  
- **Wide Input Voltage Range** (4.5V to 40V)  
- **Internal Current Limiting & Thermal Shutdown** for protection  
- **Low Power Standby Mode** (IQ < 80μA)  
- **Requires Only 4 External Components** for basic operation  
- **Stable with Low-ESR Output Capacitors** (e.g., ceramic capacitors)  
- **Pb-Free & RoHS Compliant**  

This regulator is commonly used in industrial, automotive, and consumer applications where a stable 3.3V supply is needed from a higher input voltage.

Application Scenarios & Design Considerations

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator

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