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KA431AZ

Programmable Shunt Regulator

Partnumber Manufacturer Quantity Availability
KA431AZ 200 In Stock

Description and Introduction

Programmable Shunt Regulator The KA431AZ is a precision programmable voltage reference manufactured by Fairchild Semiconductor (now part of ON Semiconductor). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Voltage Range:** 2.5V to 36V (adjustable via external resistors)  
- **Reference Voltage:** 2.495V (typical)  
- **Operating Current Range:** 1mA to 100mA  
- **Line Regulation:** 0.2% (typical)  
- **Load Regulation:** 0.4% (typical)  
- **Temperature Stability:** ±4mV (over full temperature range)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** TO-92 (3-pin)  

### **Description:**  
The KA431AZ is a three-terminal adjustable shunt regulator that provides a stable reference voltage. It is commonly used in power supply circuits, voltage monitoring, and precision regulation applications. The device operates similarly to a Zener diode but with higher precision and programmability.  

### **Features:**  
- Adjustable output voltage with two external resistors  
- Low dynamic output impedance (0.2Ω typical)  
- High accuracy (±1% reference voltage tolerance)  
- Low output noise  
- Fast turn-on response  
- Wide operating current range (1mA to 100mA)  
- Sink current capability up to 100mA  

The KA431AZ is widely used in switching power supplies, battery chargers, and voltage regulators due to its reliability and precision.

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