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LM7912 from ON,ON Semiconductor

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LM7912

Manufacturer: ON

3-terminal 1A negative voltage regulator. Output current up to 1A. Output voltage -12V(typ).

Partnumber Manufacturer Quantity Availability
LM7912 ON 191 In Stock

Description and Introduction

3-terminal 1A negative voltage regulator. Output current up to 1A. Output voltage -12V(typ). The LM7912 is a negative voltage regulator manufactured by ON Semiconductor.  

### **Specifications:**  
- **Output Voltage:** -12V  
- **Output Current:** Up to 1.5A  
- **Input Voltage Range:** -14.5V to -35V (for proper regulation)  
- **Dropout Voltage:** 2V (typical)  
- **Line Regulation:** 0.01%/V (typical)  
- **Load Regulation:** 0.3% (typical)  
- **Operating Temperature Range:** 0°C to +125°C  
- **Package Options:** TO-220, TO-220FP, TO-263 (D2PAK)  

### **Descriptions:**  
The LM7912 is a fixed negative voltage regulator designed to provide a stable -12V output. It includes internal current limiting, thermal shutdown, and safe operating area protection, making it reliable for various applications.  

### **Features:**  
- Fixed -12V output  
- Thermal overload protection  
- Short-circuit protection  
- Internal current limiting  
- High ripple rejection ratio  
- No external components required for basic operation  

This information is based on ON Semiconductor's datasheet for the LM7912.

Application Scenarios & Design Considerations

3-terminal 1A negative voltage regulator. Output current up to 1A. Output voltage -12V(typ).
Partnumber Manufacturer Quantity Availability
LM7912 20 In Stock

Description and Introduction

3-terminal 1A negative voltage regulator. Output current up to 1A. Output voltage -12V(typ). The LM7912 is a negative voltage regulator manufactured by several companies, including Texas Instruments, STMicroelectronics, and ON Semiconductor. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** -12V  
- **Output Current:** Up to 1.5A  
- **Input Voltage Range:** -14.5V to -35V (for stable regulation)  
- **Dropout Voltage:** ~2V (minimum input-output differential)  
- **Line Regulation:** 0.01%/V (typical)  
- **Load Regulation:** 0.3% (typical)  
- **Operating Temperature Range:**  
  - **LM7912 (Commercial):** 0°C to +125°C  
  - **LM7912C (Industrial):** -40°C to +125°C  
- **Package Types:** TO-220, TO-220FP, TO-3 (metal can)  

### **Descriptions:**
- The LM7912 is a fixed negative voltage regulator designed to provide a stable -12V output.  
- It includes built-in thermal overload protection, short-circuit protection, and safe operating area (SOA) protection.  
- Requires minimal external components (input/output capacitors) for operation.  

### **Features:**
- **Thermal Overload Protection:** Shuts down if temperature exceeds safe limits.  
- **Short-Circuit Protection:** Safeguards against excessive current.  
- **Internal Current Limiting:** Prevents damage from high currents.  
- **Low Cost & High Reliability:** Widely used in power supply applications.  

This information is based on manufacturer datasheets and technical documentation.

Application Scenarios & Design Considerations

3-terminal 1A negative voltage regulator. Output current up to 1A. Output voltage -12V(typ).

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