IC Phoenix logo

Home ›  T  › T40 > TL431A

TL431A from WS

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

TL431A

Manufacturer: WS, UTC, N, ST, TI, WS/CYT, ICF, ALPHA

Adjustable Precision Shunt Regulators

Partnumber Manufacturer Quantity Availability
TL431A WS, UTC, N, ST, TI, WS/CYT, ICF, ALPHA 31645 In Stock

Description and Introduction

Adjustable Precision Shunt Regulators The TL431A is a three-terminal adjustable precision shunt regulator. Below are its key specifications, descriptions, and features based on available data:

### **Manufacturer Specifications:**  
- **Reference Voltage (Vref):** 2.495V (typical)  
- **Adjustable Output Voltage Range:** 2.5V to 36V  
- **Operating Cathode Current (IK):** 1mA to 100mA  
- **Cathode Current for Regulation (IK):** 0.4mA to 100mA  
- **Output Impedance:** 0.2Ω (typical)  
- **Temperature Stability:** ±4mV (0°C to 70°C)  
- **Operating Temperature Range:**  
  - **Commercial (C):** 0°C to +70°C  
  - **Industrial (I):** -40°C to +85°C  
  - **Military (M):** -55°C to +125°C  
- **Package Types:** TO-92, SOT-23, SO-8  

### **Descriptions:**  
- The TL431A is a precision voltage reference with an integrated error amplifier.  
- It is commonly used in voltage regulation, switching power supplies, and comparator circuits.  
- The device operates as a shunt regulator, maintaining a stable output voltage by adjusting its internal resistance.  

### **Features:**  
- **Adjustable Output Voltage:** Programmable via two external resistors.  
- **Low Output Noise:** Suitable for precision applications.  
- **Low Dynamic Output Impedance:** Ensures stable regulation.  
- **Wide Operating Current Range:** From 1mA to 100mA.  
- **High Accuracy:** ±0.5% (TL431A), ±1% (TL431).  
- **Long-Term Stability:** Reliable performance over time.  
- **Available in Multiple Grades:** Standard (TL431), higher precision (TL431A), and military-grade (TL431B).  

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

Application Scenarios & Design Considerations

Adjustable Precision Shunt Regulators

Alternative Part Number

  • KA431AZ --: Industry-standard adjustable shunt regulator equivalent to TL431A with same 2.5V reference and pinout, widely available and reliable.
  • LM431ACZ --: Direct functional equivalent adjustable precision shunt regulator with comparable tolerance and voltage range, from a major reputable vendor.
  • AZ431AN-B --: Low-cost adjustable shunt regulator with similar 2.5V reference and 1% tolerance, suitable drop-in replacement for general TL431A applications.
  • AZ431AZ --: Low-cost adjustable shunt regulator with 2.5V reference and 1% tolerance, suitable drop-in replacement for TL431A in most applications.
  • LM431 --: Industry-standard adjustable shunt regulator with the same 2.5V reference and function as the TL431A, widely available and pin-compatible in most packages.
  • KA431 --: Direct functional equivalent adjustable precision shunt regulator offering the same reference voltage and current range, commonly used as a TL431 replacement.
  • AZ431 --: Adjustable shunt regulator with comparable 2.5V reference and tolerance grades, suitable drop-in substitute for TL431A in most applications.
  • AZ431AN-ATRE1 --: Low-cost adjustable precision shunt regulator with 2.5V reference and 1% accuracy, suitable for TL431A applications.
  • LM431AIM3 --: Pin-compatible adjustable shunt regulator with similar 2.5V reference and tolerance grade, widely used as a TL431A drop-in in many designs.
  • AS431ANTR-G1 --: Low-cost adjustable shunt regulator with similar electrical specifications and pinout, suitable for general TL431A replacement.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips