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TS431B 반도체 회로 부품 판매점

Adjustable Precision Shunt Regulator



Taiwan Semiconductor 로고
Taiwan Semiconductor
TS431B 데이터시트, 핀배열, 회로
TS431/431A/431B
Adjustable Precision Shunt Regulator
Sink Current Capability up to 100mA
General Description
The TS431/431A/431B 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 0.22. 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 TS431/431A/431B 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, SOT-89, SOT-23 and SOP-8 package.
Features
Standard Application
— Precision Reference Voltage
TS431 2.495V±2%
TS431A 2.495V±1%
TS431B 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: 0.22
— Low Output Noise
Ordering Information
Block Diagram
Pin Assignment
Part No.
Operating Temp.
(Ambient)
TS431xCT
TS431xCY
-20 ~ +85 oC
TS431xCX
TS431xCS
Note: Where x denotes voltage tolerance.
Blank: ±2%
A: ±1%
B: ±0.5%
Package
TO-92
SOT-89
SOT-23
SOP-8
TS431/A/BCT
1
2
3
TS431/A/BCY
1
2
3
Pin No.
TS431/A/BCX
1
3
2
TS431/A/BCS
8
2,3,6,7
1
4,5
Pin
Description
Reference
Anode
Cathode
Non connect
TS431/A/B
1-8 2003/12 rev. A


TS431B 데이터시트, 핀배열, 회로
Absolute Maximum Rating
Cathode Voltage (Note 1)
Vka 37
Continuous Cathode Current Range
Ik -100 ~ +150
Reference Input Current Range
Iref -0.05 ~ +10
Power Dissipation (Note 2, 3)
TO-92
0.625
SOT-89 / SOP-8
Pd
0.5
SOT-23
0.3
Operating Junction Temperature Range
Tj +125
Storage Temperature Range
TSTG
-65 ~ +150
Note 1: Voltage values are with respect to the anode terminal unless otherwise noted.
Note 2: Tj Max = 150 oC
Note 3: Rating apply to ambient temperature at 25 oC
Recommend Operating Condition
V
mA
mA
W
oC
oC
Cathode Voltage Range
Cathode Current Range (for regulation)
Electrical Characteristics
(Ta=25 oC, unless otherwise specified.)
Parameter
Symbo
Reference
TS431
voltage
TS431A
Vref
TS431B
Deviation of reference input
voltage, over temp. (Note 4)
Vref
Reference Input current
Iref
Radio of change in Vref to
change in cathode Voltage
Vref /
Vka
Deviation of reference input
current, over temp.
Iref(DEV)
Minimum operating cathode
current
Off-state Cathode Current
Ika(min)
Ioff
Dynamic Output Impedance
|Zka|
Vka
Ik
Test Conditions
Vka =Vref, Ik=10mA (Figure 1)
Ta = full range
Vka =Vref, Ik=10mA (Figure 1)
R1=10K, R2= , Ika=10mA
(Figure 2)
Ika=10mA, Vka = 10V to Vref,
Vka = 36V to 10V (Figure 2)
Ta= full range
R1=10K, R2= , Ika=10mA
(Figure 2)
Vka=Vref (Figure 1)
Vref=0V (Figure 3) Vka=36V
f<1KHz, Vka=Vref
Ika=1mA to 100mA (Figure 1)
Ref ~ 36
1 ~ 100
V
mA
Min
2.487
2.475
2.450
Typ
2.495
Max
2.513
2.525
2.550
-- 3 17
Unit
V
mV
-- 0.7 4.0 uA
-- -1.4 -2.7
mV/V
-- - 1.0 - 2.0
-- 0.4 1.2 uA
-- 0.4 0.6
-- -- 1.0
-- 0.22 0.5
mA
uA
TS431/A/B
2-8 2003/12 rev. A




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TS431B regulator

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