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LM2575N-15 from NS,National Semiconductor

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LM2575N-15

Manufacturer: NS

SIMPLE SWITCHER 1A Step-Down Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM2575N-15,LM2575N15 NS 6 In Stock

Description and Introduction

SIMPLE SWITCHER 1A Step-Down Voltage Regulator The LM2575N-15 is a step-down (buck) switching voltage regulator manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** Fixed -15V  
- **Output Current:** Up to 1A  
- **Input Voltage Range:** 4.75V to 40V  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 88%  
- **Operating Junction Temperature:** -40°C to +125°C  
- **Package:** TO-220-5 (Through-hole)  

### **Descriptions:**
- The LM2575N-15 is a monolithic integrated circuit that provides all active functions for a step-down switching regulator.  
- It is designed for easy implementation in applications requiring a regulated -15V output.  
- The device includes a fixed-frequency oscillator, a high-gain error amplifier, and internal current limiting and thermal shutdown protection.  

### **Features:**
- **Fixed Output Voltage (-15V)**  
- **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 (IQ ≈ 50μA)**  
- **Requires Only 4 External Components**  
- **Available in TO-220 Package**  

This regulator is commonly used in power supply applications where a stable negative voltage is required.

Application Scenarios & Design Considerations

SIMPLE SWITCHER 1A Step-Down Voltage Regulator
Partnumber Manufacturer Quantity Availability
LM2575N-15,LM2575N15 NSC 89 In Stock

Description and Introduction

SIMPLE SWITCHER 1A Step-Down Voltage Regulator The LM2575N-15 is a step-down (buck) switching regulator manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Output Voltage:** Fixed -15V  
- **Output Current:** Up to 1A  
- **Input Voltage Range:** 4.75V to 40V  
- **Switching Frequency:** 52 kHz (typical)  
- **Efficiency:** Up to 80% (depending on conditions)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220 (5-pin)  
- **Regulation Type:** Buck (Step-Down)  

### **Descriptions:**
- The LM2575N-15 is a monolithic integrated circuit designed for step-down voltage regulation.  
- It simplifies power supply design by requiring minimal external components.  
- Includes fixed-frequency oscillator, feedback control, and an internal switch.  
- Suitable for applications requiring a stable -15V output from a higher input voltage.  

### **Features:**
- **Fixed Output Voltage:** -15V (±4% tolerance)  
- **Wide Input Voltage Range:** 4.75V to 40V  
- **Low Power Standby Mode:** Typically 50µA (when disabled)  
- **Internal Current Limit & Thermal Shutdown** for protection  
- **Requires Few External Components** (inductor, diode, capacitors)  
- **Stable with Low-ESR Output Capacitors**  

This information is based on the manufacturer's datasheet for the LM2575N-15.

Application Scenarios & Design Considerations

SIMPLE SWITCHER 1A Step-Down Voltage Regulator

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