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TL431 from MSV

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TL431

Manufacturer: MSV, FAIRCHILD, UVX, GB, ST, 华昕, EST, CJ, MOT, FORWARD

Adjustable Precision Shunt Regulators

Partnumber Manufacturer Quantity Availability
TL431 MSV, FAIRCHILD, UVX, GB, ST, 华昕, EST, CJ, MOT, FORWARD 378279 In Stock

Description and Introduction

Adjustable Precision Shunt Regulators The TL431 is a precision programmable shunt regulator manufactured by 华昕 (Huaxin). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Output Voltage Range:** 2.5V to 36V (adjustable via external resistors)  
- **Reference Voltage:** 2.495V (typical)  
- **Operating Current Range:** 1mA to 100mA  
- **Temperature Stability:** ±0.4% (typical over full temperature range)  
- **Output Impedance:** 0.2Ω (typical)  
- **Operating Temperature Range:** -40°C to +85°C (industrial grade)  
- **Package Options:** TO-92, SOT-23, SOT-89, and others  

### **Descriptions:**  
- The TL431 is a three-terminal adjustable shunt regulator with stable reference voltage characteristics.  
- It is commonly used in switching power supplies, battery chargers, and precision voltage regulation circuits.  
- The device operates as a comparator and can be configured as a voltage reference or error amplifier.  

### **Features:**  
- **Adjustable Output Voltage:** Set via two external resistors.  
- **Low Dynamic Output Impedance:** Ensures stable regulation.  
- **Low Temperature Drift:** Maintains accuracy over temperature variations.  
- **Wide Operating Current Range:** Suitable for various applications.  
- **High Precision Reference Voltage:** Ensures reliable performance in feedback circuits.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Adjustable Precision Shunt Regulators

Alternative Part Number

  • LM431 --: Industry-standard adjustable shunt regulator with the same function and pinout as the TL431, widely available and well documented.
  • KA431 --: Direct functional equivalent adjustable precision shunt regulator, commonly used as a TL431 replacement in power supplies and references.
  • AZ431 --: Adjustable shunt regulator with comparable voltage reference specifications and pin compatibility, suitable as a drop-in alternative.

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