TS431-Z Datasheet, PDF (1/10 Pages) Taiwan Semiconductor Company, Ltd – Adjustable Precision Shunt Regulator

SOT-23
Pin Definition:
1. Reference
2. Cathode
3. Anode
TS431-Z
Adjustable Precision Shunt Regulator
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 V_REF 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
● Programmable Output Voltage up to 36V
● Fast Turn-On Response
● Sink Current Capability: 200mA
● Low Dynamic Output Impedance: 0.2Ω (Typ)
● Min. Operating Cathode Current: 0.2mA (Typ)
● Halogen Free
Block Diagram
Ordering Information
Part No.
Package
Packing
TS431ACX-Z RFG SOT-23
3Kpcs / 7” Reel
TS431BCX-Z RFG SOT-23
3Kpcs / 7” Reel
Note: TS431A – V_REF 2.495V ±1%
TS431B – V_REF 2.495V ±0.5%
“G” denotes for Halogen free products
Absolute Maximum Rating (Ta = 25^oC unless otherwise noted)
Parameter
Symbol
Limit
Cathode Voltage
V_KA
36
Continuous Cathode Current Range
I_K
+250
Reference Input Current Range
I_REF
10
Power Dissipation
P_D
0.25
Operating Temperature Range
T_OPER
-20 ~ +85
Junction Temperature
T_J
-40 ~ +125
Storage Temperature Range
T_STG
-40 ~ +125
Thermal Resistance Junction to Ambient
Ó¨_JA
156
Note: Ó¨_JA is measured with the PCB copper area of approximately 1 in² (Multi-Layer)
Unit
V
mA
mA
W
o_C
o_C
o_C
o_C/W
1/10
Version: B11