TS1431
Adjustable Precision Shunt Regulator
TO-92
SOT-23
Pin Definition:
1. Cathode
2. Anode
Pin Definition:
1. Cathode
2. Reference
3. Anode
3. Reference
General Description
TS1431 series 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 volts with two
external resistors. These devices exhibit a wide operating current range of 1.0 to 100mA with a typical dynamic
impedance of 0.22Ω. 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 2.5V reference makes it
convenient to obtain a stable reference from 5.0V logic supplies, and since The TS1431 series operates as a shunt
regulator, it can be used as either a positive or negative stage reference.
Features
Ordering Information
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Precision Reference Voltage
Part No.
Package
Packing
1Kpcs / Bulk
TS1431 – 2.495V±2%
TS1431xCT B0
TS1431xCT A3
TS1431xCX RF
TS1431xCT B0G
TS1431xCT A3G
TS1431xCX RFG
TO-92
TO-92
SOT-23
TO-92
TO-92
SOT-23
TS1431A – 2.495V±1%
2Kpcs / Ammo
3Kpcs / 7” Reel
1Kpcs / Bulk
2Kpcs / Ammo
3Kpcs / 7” Reel
TS1431B – 2.495V±0.5%
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Equivalent Full Range Temp. Coefficient: 50ppm/ ºC
Programmable Output Voltage up to 36V
Fast Turn-On Response
Sink Current Capability of 1~100mA
Low Dynamic Output Impedance: 0.2Ω
Low Output Noise
Note: “G” denote for Green Product
Where xx denotes voltage tolerance
Blank: ±2%, A: ±1%, B: ±0.5%
Application
Block Diagram
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Voltage Monitor
Delay Timmer
Constant –Current Source/Sink
High-Current Shunt Regulator
Crow Bar
Over-Voltage / Under-Voltage Protection
Absolute Maximum Rating (Ta = 25oC unless otherwise noted)
Parameter
Cathode Voltage
Symbol
Limit
36
Unit
V
Vka
Continuous Cathode Current Range
Reference Input Current Range
Power Dissipation
Ik
1 ~ +100
-0.05 ~ +10
0.625
mA
mA
Iref
TO-92
SOT-23
Pd
W
0.30
Junction Temperature
Tj
+150
oC
oC
oC
Operating Temperature Range
Storage Temperature Range
Toper
Tstg
0 ~ +70
-65 ~ +150
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Version: B07