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TL431 Datasheet PDF : 16 Pages
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Order this document by TL431/D
Programmable
Precision References
The TL431, A, B integrated circuits are three–terminal programmable
shunt regulator diodes. These monolithic IC voltage references operate as a
low temperature coefficient zener which is programmable from Vref to 36 V
with two external resistors. These devices exhibit a wide operating current
range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 Ω. The
characteristics of these references make them excellent replacements for
zener diodes in many applications such as digital voltmeters, power
supplies, and op amp circuitry. The 2.5 V reference makes it convenient to
obtain a stable reference from 5.0 V logic supplies, and since the TL431, A,
B operates as a shunt regulator, it can be used as either a positive or
negative voltage reference.
• Programmable Output Voltage to 36 V
• Voltage Reference Tolerance: ±0.4%, Typ @ 25°C (TL431B)
• Low Dynamic Output Impedance, 0.22 Ω Typical
• Sink Current Capability of 1.0 mA to 100 mA
• Equivalent Full–Range Temperature Coefficient of 50 ppm/°C Typical
• Temperature Compensated for Operation over Full Rated Operating
Temperature Range
• Low Output Noise Voltage
TL431, A, B
Series
PROGRAMMABLE
PRECISION REFERENCES
SEMICONDUCTOR
TECHNICAL DATA
LP SUFFIX
PLASTIC PACKAGE
CASE 29
(TO–92)
123
Pin 1. Reference
2. Anode
3. Cathode
8
1
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
DM SUFFIX
PLASTIC PACKAGE
CASE 846A
(Micro–8)
ORDERING INFORMATION
Device
Operating
Temperature Range
TL431CLP, ACLP, BCLP
TL431CP, ACP, BCP
TL431CDM, ACDM, BCDM
TA = 0° to +70°C
TL431CD, ACD, BCD
TL431ILP, AILP, BILP
TL431IP, AIP, BIP
TL431IDM, AIDM, BIDM
TA = –40° to +85°C
TL431ID, AID, BID
MOTOROLA ANALOG IC DEVICE DATA
Package
TO–92
Plastic
Micro–8
SOP–8
TO–92
Plastic
Micro–8
SOP–8
Cathode 1
N/C 2
N/C 3
N/C 4
8 Reference
7 N/C
6 Anode
5 N/C
(Top View)
D SUFFIX
PLASTIC PACKAGE 8
CASE 751
(SOP–8)
1
Cathode 1
2
Anode
3
N/C 4
8 Reference
7
Anode
6
5 N/C
(Top View)
SOP–8 is an internally modified SO–8 package. Pins 2,
3, 6 and 7 are electrically common to the die attach flag.
This internal lead frame modification decreases power
dissipation capability when appropriately mounted on a
printed circuit board. SOP–8 conforms to all external
dimensions of the standard SO–8 package.
© Motorola, Inc. 1998
Rev 6
1
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