Shunt Regulator. TL431 Datasheet

TL431 Regulator. Datasheet pdf. Equivalent

Part TL431
Description Programmable Shunt Regulator
Feature www.fairchildsemi.com TL431/TL431A Programmable Shunt Regulator Features • • • • Programmable Outp.
Manufacture Fairchild Semiconductor
Datasheet
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TL431
TL431/TL431A
Programmable Shunt Regulator
www.fairchildsemi.com
Features
• Programmable Output Voltage to 36 Volts
• Low Dynamic Output Impedance 0.2Ω Typical
• Sink Current Capability of 1.0 to 100mA
• Equivalent Full-Range Temperature Coefficient of
50ppm/°C Typical
• Temperature Compensated For Operation Over Full Rated
Operating Temperature Range
• Low Output Noise Voltage
• Fast Turn-on Response
Description
The TL431/TL431A are 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 0.2Ω. Active output circuitry
provides a very sharp turn-on characteristic, making these
devices excel lent replacement for zener diodes in many
applications.
TO-92
1
1. Ref 2. Anode 3. Cathode
8-DIP
1
1.Cathode 2.3.4.5.7.NC
6.Anode 8.Ref
8-SOP
1
1. Cathode 2. 3. 6. 7. Anode
8. Ref 4. 5. NC
©2011 Fairchild Semiconductor Corporation
Rev. 1.0.4



TL431
TL431/TL431A
Internal Block Diagram
+
-
Absolute Maximum Ratings
(Operating temperature range applies unless otherwise specified.)
Parameter
Cathode Voltage
Cathode Current Range (Continuous)
Reference Input Current Range
Power Dissipation
D, LP Suffix Package
P Suffix Package
Operating Temperature Range
Junction Temperature
Storage Temperature Range
Symbol
VKA
IKA
IREF
PD
TOPR
TJ
TSTG
Value
37
-100 ~ +150
-0.05 ~ +10
770
1000
-25 ~ +85
150
-65 ~ +150
Recommended Operating Conditions
Parameter
Cathode Voltage
Cathode Current
Symbol
VKA
IKA
Min
VREF
1.0
Typ
-
-
Max
36
100
Unit
V
mA
mA
mW
mW
°C
°C
°C
Unit
V
mA
2





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