TS1431 Datasheet, PDF (1/7 Pages) Taiwan Semiconductor Company, Ltd – Adjustable Precision Shunt Regulator

TS1431/1431A/1431B
Adjustable Precision Shunt Regulator
Pin Assignment:
1. Cathode
2. Reference
3. Anode
Sink Current Capability up to 100mA
General Description
The TS1431/1431A/1431B 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 TS1431/1431A/1431B operates as a shunt regulator,
it can be used as either a positive or negative stage reference.
This series is offered in 3-pin TO-92 and SOT-23 package.
Features
Standard Application
— 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 1.0 to 100 mA
— Low Dynamic Output Impedance: 0.22Ω
— Low Output Noise
Ordering Information
Block Diagram
Part No.
Operating Temp.
(Ambient)
TS1431xCT
TS1431xCX
-20 ~ +85 ^oC
Note: Where x denotes voltage tolerance.
Blank: ±2%
A: ±1%
B: ±0.5%
Package
TO-92
SOT-23
TS1431/A/B
1-7
2003/12 rev. B