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TL431ID from ST,ST Microelectronics

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TL431ID

Manufacturer: ST, TI, MOTO

PROGRAMMABLE PRECISION REFERENCES

Partnumber Manufacturer Quantity Availability
TL431ID ST, TI, MOTO 16571 In Stock

Description and Introduction

PROGRAMMABLE PRECISION REFERENCES The TL431ID is a programmable precision voltage reference manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Reference Voltage:** 2.495V (typical)  
- **Adjustable Output Voltage Range:** 2.5V to 36V  
- **Operating Current Range:** 1mA to 100mA  
- **Output Impedance:** 0.2Ω (typical)  
- **Temperature Stability:** ±4mV (0°C to 70°C)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The TL431ID is a three-terminal adjustable shunt regulator with thermal stability. It provides precise voltage references for applications such as power supplies, battery chargers, and voltage monitoring circuits.  

### **Features:**  
- **Adjustable Output Voltage** via external resistors  
- **Low Dynamic Output Impedance** (0.2Ω typical)  
- **Sink Current Capability** (up to 100mA)  
- **Low Output Noise**  
- **Wide Operating Temperature Range** (-40°C to +125°C)  
- **Available in Multiple Packages** (including SOIC-8)  

This information is sourced from the official Texas Instruments datasheet for the TL431ID.

Application Scenarios & Design Considerations

PROGRAMMABLE PRECISION REFERENCES

Alternative Part Number

  • KA431AZ --: Industry-standard adjustable shunt regulator equivalent to TL431, widely available and pin-compatible in TO-92 package.
  • LM431ACZ --: Direct functional equivalent adjustable precision shunt regulator with similar tolerance and voltage reference characteristics.
  • AZ431AN-ATRE1 --: Low-cost adjustable shunt regulator with comparable 2.5V reference and sink current capability, suitable drop-in replacement.
  • AS431ANTR-G1 --: Adjustable precision shunt regulator with comparable reference voltage and current capability, suitable drop-in replacement in most TL431 circuits.
  • LM431AIZ --: Adjustable shunt regulator with the same 2.5V reference and function as the TL431, widely available and pin-compatible in the common TO-92/SOIC packages.

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