TS2431 Datasheet, PDF (1/13 Pages) STMicroelectronics – PROGRAMMABLE SHUNT VOLTAGE REFERENCE

TO-92
TS2431
Adjustable Precision Shunt Regulator
SOT-89
Pin Definition:
1. Reference
2. Anode
3. Cathode
SOT-23
Pin Definition:
1. Cathode
2. Reference
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
TS2431 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 V_REF 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 TS2431 series operates as a shunt
regulator, it can be used as either a positive or negative stage reference.

Features
● Precision Reference Voltage
TS2431 – 2.495V±2%
TS2431A – 2.495V±1%
TS2431B – 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
TS2431xCT B0
TO-92
1Kpcs / Bulk
TS2431xCT A3
TO-92
2Kpcs / Ammo
TS2431xCX RF
SOT-23
3Kpcs / 7” Reel
TS2431xCY RM
SOT-89
1Kpcs / 7” Reel
TS2431xCS RL
SOP-8
2.5Kpcs / 13” 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)
V_KA
37
Continuous Cathode Current Range
I_K
-100 ~ +150
Reference Input Current Range
I_REF
-0.05 ~ +10
TO-92
0.625
Power Dissipation
SOT-23
P_D
0.30
SOT-89 / SOP-8
0.50
Junction Temperature
T_J
+150
Operating Temperature Range
T_OPER
0 ~ +70
Storage Temperature Range
T_STG
-65 ~ +150
Note 1: Voltage values are with respect to the anode terminal unless otherwise noted.
1/13
Unit
V
mA
mA
W
o_C
o_C
o_C
Version: E07