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TL431的详细信息

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TL431I  
Adjustable Precision Shunt Regulator (I Grade)  
FEATURES  
PIN CONNECTIONS  
Programmable Output Voltage to 40V  
Low Dynamic Output Impedance 0.2Ω  
SOT-89  
K
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  
A
R
TL431ICPK  
Operating Temperature Range  
Low Output Noise Voltage  
R
A
TO-92  
R
A
K
K
Fast Turn on Respons  
TL431ICLP  
Provided Pb-Free packages from the end of 2004  
* ESD tolerance (human body model) 2000V  
* Operating Temperature Range -60~+125 �C  
SO8  
TL431ACMX  
SOT-23  
A
CATHODE  
ANODE  
ANODE  
NC  
REF  
1
2
3
4
8
7
6
5
TL431ILT1  
ANODE  
ANODE  
NC  
R
K
DESCRIPTION  
The TL431I 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 0.2. Active output circuitry provides a very sharp turn-on characteristic,  
making these devices excellent replacement for zener diodes in many applications.  
The TL431I is characterized for operation from -60oC to +125 oC.  
SYMBOL  
FUNCTIONAL BLOCK DIAGRAM  
ABSOLUTE MAXIMUM RATINGS  
(Operating temperature range applies unless otherwise specified)  
Characteristic  
Symbol  
Value  
Unit  
Cathode Voltage  
VKA  
IK  
42  
V
mA  
mA  
Cathode Current Range (Continuous)  
Reference Input Current Range  
Power Dissipation at 25oC:  
100 ~ 150  
0.05 ~ 10  
IREF  
PD  
TO – 92 Package (R!JA = 178oC/W)  
SOT – 23 – 3 Package (R!JA = 625oC/W)  
Junction Temperature Range  
0.7  
0.2  
W
W
oC  
oC  
oC  
TJ  
Tg  
0 ~ 150  
Operating Temperature Range  
Storage Temperature Range  
-60 ~+125  
Tstg  
-65 ~ +150  
1