器件名称: TL431CLF
功能描述: Programmable Precision Reference
文件大小: 3527.52KB 共12页
简 介:TECHNICAL DATA
Programmable Precision Reference
FEATURES
Programmable Output Voltage to 40V Low Dynamic Output Impedance 0.2Ω 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 Response TO-92, SOP- 8, SOT-23, SOT-89 packages
TL431
PIN CONNECTIONS
ANODE
REFERENCE
CATHODE
DESCRIPTION
The TL431 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 40 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. o o The TL431 is characterized for operation from -25 C to +85 C.
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 25 C: o SOP, TO – 92 Package (RJA = 178 C/W) o SOT Package (RJA = 625 C/W) Junction Temperature Range Operating Temperature Range Storage Temperature Range
o
Symbol VKA IK IREF PD
Value 40 -100 ~ 150 0.05 ~ 10 0.7 0.2
Unit V mA mA W W
o o o
TJ Tg Ts……
