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TL431-A from HTC

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TL431-A

Manufacturer: HTC, TW

Adjustable Precision Shunt Regulators

Partnumber Manufacturer Quantity Availability
TL431-A,TL431A HTC, TW 2450 In Stock

Description and Introduction

Adjustable Precision Shunt Regulators The TL431-A is a precision programmable shunt regulator manufactured by HTC (HTC Korea). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Reference Voltage (Vref):** 2.495V (Typical)  
- **Operating Voltage Range (Cathode to Anode):** 2.5V to 36V  
- **Output Current (Cathode):** 1mA to 100mA  
- **Temperature Stability:** ±0.4% (Typical) over full temperature range  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** TO-92, SOT-23, SOT-89  

### **Descriptions:**  
The TL431-A is a three-terminal adjustable precision shunt regulator with stable reference voltage performance. It is commonly used in power supply circuits, voltage monitoring, and error amplifiers. The device operates by comparing an external voltage with an internal 2.5V reference and adjusting its output to maintain regulation.  

### **Features:**  
- Adjustable output voltage with two external resistors  
- Low dynamic output impedance (0.2Ω typical)  
- Low temperature drift  
- High stability over temperature and current variations  
- Fast turn-on response  
- Wide operating current range (1mA to 100mA)  
- Available in multiple package options  

This information is based strictly on the manufacturer's provided data for the TL431-A from HTC.

Application Scenarios & Design Considerations

Adjustable Precision Shunt Regulators

Alternative Part Number

  • LM431ACZ --: Industry-standard adjustable shunt regulator with the same 2.5V reference and pinout, widely available and directly interchangeable in most TL431 circuits.
  • KA431AZ --: Pin-compatible adjustable shunt regulator with equivalent electrical specifications and good availability as a drop-in replacement.
  • AZ431AN-B --: Low-cost adjustable shunt regulator with comparable reference voltage and tolerance, suitable for general TL431 replacement applications.
  • LM431 --: Industry-standard adjustable shunt regulator functionally equivalent to TL431, widely available and well documented.
  • KA431 --: Pin-compatible adjustable precision shunt regulator with similar voltage reference and tolerance specifications.
  • AZ431 --: Adjustable shunt regulator offering comparable reference voltage and current capability as a drop-in replacement.

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