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LM431CIZ from FAIRCHILD,Fairchild Semiconductor

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LM431CIZ

Manufacturer: FAIRCHILD

Adjustable/2.5V, 0.5% Tolerance Shunt Regulator

Partnumber Manufacturer Quantity Availability
LM431CIZ FAIRCHILD 20000 In Stock

Description and Introduction

Adjustable/2.5V, 0.5% Tolerance Shunt Regulator The LM431CIZ is a precision programmable shunt regulator 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 (programmable via external resistors)  
- **Reference Voltage (Vref):** 2.495V (typical)  
- **Operating Current Range:** 1mA to 100mA  
- **Line Regulation:** 0.2% (typical)  
- **Load Regulation:** 0.4% (typical)  
- **Temperature Stability:** 50ppm/°C (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** TO-92, SOT-23 (LM431CIZ is in TO-92 package)  

### **Descriptions:**  
- The LM431CIZ is a three-terminal adjustable shunt regulator with thermal stability.  
- It provides precise voltage regulation by comparing an internal reference voltage with an external voltage divider.  
- Commonly used in power supplies, voltage monitoring, and precision current limiting applications.  

### **Features:**  
- **Adjustable Output Voltage** via two external resistors.  
- **Low Dynamic Output Impedance:** 0.2Ω (typical).  
- **Fast Turn-On Response.**  
- **Low Output Noise.**  
- **Wide Operating Current Range (1mA to 100mA).**  
- **Available in Multiple Package Options (TO-92, SOT-23, SOIC).**  

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

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