TS431-Z
Adjustable Precision Shunt Regulator
SOT-23
TS431-Z
TS431AR-Z
Pin Definition:
1. Cathode
2. Reference
3. Anode
Pin Definition:
1. Reference
2. Cathode
3. Anode
General Description
TS431 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 to 250mA with a typical dynamic
impedance of 0.2Ω. 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 2.495V reference makes it
convenient to obtain a stable reference from 5.0V logic supplies, and since The TS431 operates as a shunt
regulator, it can be used as either a positive or negative stage reference.
Features
Ordering Information
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Programmable Output Voltage up to 36V
Part No.
Package
Packing
TS431A – VREF 2.495V ±1% tolerance
TS431B – VREF 2.495V ±0.5% tolerance
Fast Turn-On Response
TS431ACX-Z RFG
TS431ARCX-Z RFG
TS431BCX-Z RFG
SOT-23
SOT-23
SOT-23
3kpcs / 7” Reel
3kpcs / 7” Reel
3kpcs / 7” Reel
Sink Current Capability: 200mA
Low Dynamic Output Impedance: 0.2Ω (Typ)
Min. Operating Cathode Current: 0.2mA (Typ)
Halogen Free
Note: “G” denotes for Halogen- and Antimony-free as those which
contain <900ppm bromine, <900ppm chlorine (<1500ppm total
Br + Cl) and <1000ppm antimony compounds
Block Diagram
Absolute Maximum Ratings (TA = 25oC unless otherwise noted)
Parameter
Symbol
Limit
36
Unit
V
Cathode Voltage
VKA
Continuous Cathode Current Range
Reference Input Current Range
IK
+250
10
mA
mA
IREF
Power Dissipation
PD
0.25
W
oC
Operating Temperature Range
TOPER
-20 ~ +85
Junction Temperature
TJ
-40 ~ +125
-40 ~ +125
156
oC
oC
oC/W
Storage Temperature Range
Thermal Resistance Junction to Ambient
TSTG
RӨJA
Note: RӨJA is measured with the PCB copper area of approximately 1 in2 (Multi-Layer)
1/10
Version: C14