线性稳压器TL431

FEATURES - Programmable Output Voltage to 40V- Guaranteed 0.5% Reference Voltage Tolerance- Low (0.2ヘ Typ.) Dynamic Output Impedance- Cathode Current Range(Continuous) - 100 ~ 150 mA- Equivalent Full Range Temperature Coefficient of 50PPM/∩- 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 PackageDESCRIPTION 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 0.2ヘ. 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 to 125.