TL431
The TL431 is a three-terminal adjustable shunt regulator with guaranteed thermal stability over a full operation range. It features sharp turn-on characteristics, low temperature coefficient and low output impedance, which make it ideal substitute for Zener diode in applications such as switching power supply, charger and other adjustable regulators.
The output voltage of TL431 can be set to any value between Vref (2.495V) and the corresponding maximum cathode voltage (36V).
The TL431 precision reference is offered in two voltage tolerance: 0.5% and 1%.
This IC is available in 4 Packages: SOT-23 and TO92
Features
Programmable Precise Output Voltage from 2.5V to 36V
Low Temperature Deviation: 5mV Typical
Low Equivalent Full-range Temperature Coefficient
Sink Current Capacity from 1mA to 100 mA
Low Output Noise
Wide Operating Range of -40 to 125℃
ROHS/Halogen Free
Applications
Charger
Voltage Adapter
Switching Power Supply
Graphic Card
Precision Voltage Reference
