DESCRIPTION  

The TL431 is a three-terminal adjustable shunt regulator with specified thermal stability over applicable temperature VREF (Approx. 2.5V) and 40V with two external resistors. This device has a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making this device excellent replacement for zener diodes in many applications. The TL431 is characterized for operation from -40°C to +125°C.

FEATURES  

• Programmable Output Voltage to 40V
• Guaranteed 0.5% Reference Voltage Tolerance
• Low (0.2Ω Typ.) Dynamic Output Impedance
• Cathode Current Range(Continuous) - 100 ~ 150 mA
• Equivalent Full Range Temperature Coefficient of 50ppm/°C
• Temperature Compensated For Operation Over Full Rate Operating Temperature Range
• Low Output Noise Voltage
• Fast Turn-on Response
• TO-92, SOT-89 or SOT-23 3L Package