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TL431AILP

Manufacturer: TI

Voltage Reference

Partnumber Manufacturer Quantity Availability
TL431AILP TI 4400 In Stock

Description and Introduction

Voltage Reference The TL431AILP is a programmable precision shunt regulator manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Output Voltage Range:** 2.495V to 36V (adjustable)  
- **Reference Voltage:** 2.495V (typical)  
- **Operating Current Range:** 1mA to 100mA  
- **Temperature Stability:** ±4mV (0°C to 70°C)  
- **Output Impedance:** 0.2Ω (typical)  
- **Package:** TO-92 (3-pin)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The TL431AILP is a three-terminal adjustable precision shunt regulator with stable thermal performance. It provides a stable reference voltage that can be adjusted using external resistors. It is commonly used in power supply feedback circuits, voltage monitoring, and precision voltage regulation.  

### **Features:**  
- Adjustable output voltage with two external resistors  
- Low dynamic output impedance (0.2Ω typical)  
- Sink current capability of 1mA to 100mA  
- Low output noise voltage  
- Fast turn-on response  
- Stable operation over a wide temperature range  

This device is widely used in switching power supplies, battery chargers, and voltage reference applications.

Application Scenarios & Design Considerations

Voltage Reference

Alternative Part Number

  • LM431AIZ --: Pin-compatible adjustable shunt regulator in TO-92 with similar 2.5V reference and 1% tolerance, widely available and a common drop-in replacement.
  • KA431AZ --: Industry-standard adjustable shunt regulator in TO-92, functionally equivalent to the TL431 with comparable voltage reference and current capability.
  • AS431ANTR-G1 --: Low-cost adjustable shunt regulator in TO-92 offering similar reference voltage and tolerance, suitable for general-purpose voltage regulation circuits.
  • LM431ACZ --: Same manufacturer's adjustable shunt reference in TO-92 with comparable tolerance and voltage reference, easy drop-in substitute.

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