PROGRAMMABLE PRECISION SHUNT REGULATOR The TL431CF is a precision programmable voltage reference manufactured by HTC (HTC Korea). Below are the factual specifications, descriptions, and features of the TL431CF:
### **Specifications:**
- **Reference Voltage (Vref):** 2.495V (typical)
- **Adjustable Output Voltage Range:** 2.5V to 36V
- **Operating Current Range (IKA):** 1mA to 100mA
- **Cathode Voltage (VKA) Range:** Up to 36V
- **Reference Input Current (Iref):** 2µA (typical)
- **Output Impedance:** 0.2Ω (typical)
- **Temperature Stability:** ±4mV (0°C to 70°C)
- **Operating Temperature Range:** 0°C to 70°C (commercial grade)
- **Package Type:** TO-92 (3-pin)
### **Descriptions:**
The TL431CF 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 by comparing an external voltage with an internal 2.5V reference and adjusting the cathode current to maintain regulation.
### **Features:**
- **Precision Voltage Reference:** 2.5V with tight tolerances
- **Adjustable Output Voltage:** Programmable via external resistors
- **Low Dynamic Output Impedance:** Ensures stable regulation
- **Wide Operating Current Range:** 1mA to 100mA
- **Low Temperature Drift:** Ensures stability across temperature variations
- **TO-92 Package:** Compact and easy to use in various circuits
This information is based on the manufacturer's datasheet and technical documentation.
