TS1431ACX Power Management Ics-Voltage Reference-Voltage Reference0 pages

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
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Application
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Ordering Information

Precision Reference Voltage
TS1431 – 2.495V±2%
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

Part No.

Package

Packing

TS1431xCX RF
SOT-23
3Kpcs / 7” Reel
TS1431xCX RFG
SOT-23
3Kpcs / 7” Reel
Note: “G” denote for Green Product
Where xx denotes voltage tolerance
Blank: ±2%, A: ±1%, B: ±0.5%

Block Diagram

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

Symbol

Limit

Unit

Cathode Voltage
Continuous Cathode Current Range
Reference Input Current Range

Vka
Ik
Iref

36
1 ~ +100
-0.05 ~ +10

V
mA
mA

Power Dissipation

Pd

0.30

Junction Temperature
Operating Temperature Range
Storage Temperature Range

Tj
Toper
Tstg

1/10

+150
0 ~ +70
-65 ~ +150

W
o

C
C
o
C
o

Version: C07