TS431I Datasheet, PDF (1/13 Pages) Taiwan Semiconductor Company, Ltd – Adjustable Precision Shunt Regulator

TS431I
Adjustable Precision Shunt Regulator
TO-92
SOT-89
Pin Definition:
1. Reference
2. Anode
3. Cathode
SOT-23
Pin Definition:
1. Reference
2. Cathode
3. Anode
SOP-8
Pin Definition:
1. Cathode 8. Reference
2. Anode 7. Anode
3. Anode 6. Anode
4. N/C
5. N/C
General Description
The TS431I/431AI/431BI 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 2.5volt reference makes it
convenient to obtain a stable reference from 5.0volt logic supplies, and since The TS431I/431AI/431BI operates as a
shunt regulator, it can be used as either a positive or negative stage reference.
Features
● Precision Reference Voltage
TS431I – 2.495V±2%
TS431AI – 2.495V±1%
TS431BI – 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
TS431xIT B0
TO-92
1Kpcs / Bulk
TS431xIT A3
TO-92
2Kpcs / Ammo
TS431xIX RF
SOT-23
3Kpcs / 7” Reel
TS431xIY RM
SOT-89
1Kpcs / 7” Reel
TS431xIS RL
SOP-8 2.5Kpcs / 2.5” Reel
Note: Where xx denotes voltage tolerance
Blank: ±2%
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 Rating (Ta = 25 ^oC unless otherwise noted)
Parameter
Symbol
Limit
Cathode Voltage (Note 1)
Vka
37
Continuous Cathode Current Range
Ik
-100 ~ +150
Reference Input Current Range
Iref
-0.05 ~ +10
Power Dissipation
TO-92
0.625
SOT-23
Pd
0.30
SOT-89 / SOP-8
0.50
Junction Temperature
Tj
+150
Operating Temperature Range
Toper
-40 ~ +85
Storage Temperature Range
Tstg
-65 ~ +150
Note 1: Voltage values are with respect to the anode terminal unless otherwise noted.
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Unit
V
mA
mA
W
o_C
o_C
o_C
Version: A07