2.495V Programmable Shunt Voltage Reference - Taiwan Semiconductor
Description
TS1431
Adjustable Precision Shunt Regulator
SOT-23
Pin Definition: 1.
Cathode 2.
Reference 3.
Anode
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
● Precision Reference Voltage TS1431A – 2.
495V±1% TS1431B – 2.
495V±0.
5%
● 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
Ordering Information
Part No.
Package
Packing
TS1431xCX RFG
SOT-23
3,000pcs / 7” Reel
Note: “G” denote for Green Product Where xx denotes voltage tolerance A: ±1%, B: ±0.
5%
Application
● Voltage Monitor ● Delay Timmer ● Constant –Current Source/Sink ● High-Current Shunt Regulator ● Crow Bar ● Over-Voltage / Under-Voltage Protection
Block Diagram
Absolute Maximum Ratings (TA = 25oC unless otherwise noted)
Parameter
Symbol
Cathode Voltage Continuous Cathode Current Range Reference Input Current Range Power Dissipation Junction Temperature Operating Temperature Range Storage Temperature Range
VKA IKA IREF PD TJ TOPR TSTG
Limit
36 1 ~ +100 -0.
05 ~ +10
0.
30 +150 0 ~ +70 -65 ~ +150
Unit
V
mA
mA
W oC oC oC
Document Number: DS_P0000229
1
Version: E15
TS1431
Adjustable Precision Shunt Regulator
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