器件名称: TL431A
功能描述: Adjustable Precision Shunt Regulator
文件大小: 280.6KB 共7页
简 介:TL431A
FEATURES
Adjustable Precision Shunt Regulator
PIN CONNECTIONS
Programmable Output Voltage to 40V Low Dynamic Output Impedance 0.2 Sink Current Capability of 0.1 mA to 100 mA Equivalent Full-Range Temperature Coefficient of 50 ppm/oC Temperature Compensated for Operation over Full Rated Operating Temperature Range Low Output Noise Voltage Fast Turn on Respons TO-92 or SOT-23 and SOT-89 ,SO8packages
SO8 TL431ACMX
CATHODE ANODE ANODE NC
1 2 3 4
8 7 6 5
REF ANODE ANODE NC
DESCRIPTION
The TL431A is a three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between Vref (approximately 2.5 volts) and 36 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. The TL431A is characterized for operation from -0oC to +70oC.
SYMBOL
FUNCTIONAL BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
(Operating temperature range applies unless otherwise specified) Characteristic Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Power Dissipation at 25oC: TO – 92 Package (R!JA = 178oC/W) SOT – 23 – 3 Package (R!JA = 625oC/W) Junction Temperature Range Operating Temperature Range Storage Temperature Range Symbol VKA IK IREF PD 0.7 0.2 0 ~ 150 0 ~ 70 -65 ~ +150 W W o ……
