TS431ACX [TSC]
Adjustable Precision Shunt Regulator; 可调式精密并联稳压器
| 型号： | TS431ACX |
| 厂家： | 
TAIWAN SEMICONDUCTOR COMPANY, LTD |
| 描述： | Adjustable Precision Shunt Regulator |
| 文件： | 总8页 (文件大小：216K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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 0.22Ω. 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 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: 0.22Ω
Low Output Noise
Ordering Information
Part No.
Operating Temp.
Package
Block Diagram
(Ambient)
TS431xCT
TO-92
-20 ~ +85 oC
TS431xCY
TS431xCX
TS431xCS
SOT-89
SOT-23
SOP-8
Note: Where x denotes voltage tolerance.
Blank: ±2%
A: ±1%
B: ±0.5%
Pin Assignment
Pin No.
TS431/A/BCX
Pin
Description
TS431/A/BCT
TS431/A/BCY
TS431/A/BCS
1
2
3
1
2
3
1
3
2
8
2,3,6,7
1
Reference
Anode
Cathode
4,5
Non connect
TS431/A/B
1-8
2003/12 rev. B
Absolute Maximum Rating
Cathode Voltage (Note 1)
Vka
Ik
37
-100 ~ +150
-0.05 ~ +10
0.625
V
Continuous Cathode Current Range
Reference Input Current Range
Power Dissipation (Note 2, 3)
mA
mA
Iref
TO-92
SOT-89 / SOP-8
SOT-23
Pd
0.5
W
0.3
Operating Junction Temperature Range
Storage Temperature Range
Tj
+125
oC
oC
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
Cathode Voltage Range
Vka
Ik
Ref ~ 36
1 ~ 100
V
Cathode Current Range (for regulation)
mA
Electrical Characteristics
(Ta=25 oC, unless otherwise specified.)
Parameter
TS431
Symbo
Test Conditions
Min
Typ
Max
2.550
2.525
2.513
Unit
Reference
voltage
2.450
2.475
2.487
Vref
Vka =Vref, Ik=10mA (Figure 1)
2.495
V
TS431A
TS431B
Deviation of reference input
voltage, over temp. (Note 4)
Ta = full range
∆Vref
--
--
3
17
mV
uA
Vka =Vref, Ik=10mA (Figure 1)
R1=10KΩ, R2= ∞ , Ika=10mA
(Figure 2)
Reference Input current
Iref
0.7
4.0
Radio of change in Vref to
change in cathode Voltage
∆Vref /
∆Vka
Ika=10mA, Vka = 10V to Vref,
Vka = 36V to 10V (Figure 2)
Ta= full range
--
--
-1.4
-2.7
mV/V
- 1.0
- 2.0
Deviation of reference input
current, over temp.
Iref(DEV)
R1=10KΩ, R2= ∞ , Ika=10mA
(Figure 2)
--
0.4
1.2
uA
Minimum operating cathode
current
Ika(min)
Ioff
Vka=Vref (Figure 1)
--
--
--
0.4
--
0.6
1.0
0.5
mA
uA
Ω
Off-state Cathode Current
Vref=0V (Figure 3)
f<1KHz, Vka=Vref
Vka=36V
Dynamic Output Impedance
|Zka|
0.22
Ika=1mA to 100mA (Figure 1)
TS431/A/B
2-8
2003/12 rev. B
Electrical Characteristics (continued) (Ta=25 oC, unless otherwise specified.)
Note 4. Deviation of reference input voltage, VDEV, is defined as the maximum deviation of the reference over the full
temperature range.
The average temperature coefficient of the reference input voltage αVref is defined as:
| αVref | = [ VDEV / Vref(25oC) ] * 106 / T2 – T1…………………….. (PPM/ oC)
Where: T2-T1 = full temperature change.
αVref can be positive or negative depending on whether the slope is positive or negative.
Example: Maximum Vref=2.496V at 30oC, minimum Vref=2.492V at 0oC, Vref=2.495V at 25oC, ∆T=70 oC
| αVref | = [ 4mV / 2495mV ] * 106 / 70oC ≈ 23ppm/oC
Note 5. The dynamic output impedance, Rz, is defined as:
| Zka | = ∆Vka / ∆Ika
When the device is programmed with two external resistors R1and R2 (see Figure 2). The dynamic output
impedance of the overall circuit, is defined as :
| Zka | = ∆v / ∆i | ≈ Zka | * ( 1 + R1 / R2)
Test Circuits
TS431/A/B
3-8
2003/12 rev. B
Application Examples
TS431/A/B
4-8
2003/12 rev. B
Application Examples
TS431/A/B
5-8
2003/12 rev. B
Typical Performance Characteristics
TS431/A/B
6-8
2003/12 rev. B
TO-92 Mechanical Drawing
A
TO-92 DIMENSION
MILLIMETERS
INCHES
MIN MAX
DIM
MIN
4.30
4.30
MAX
4.70
4.70
B
A
B
C
D
E
F
0.169
0.169
0.185
0.185
14.30(typ)
0.563(typ)
0.43
2.19
3.30
2.42
0.37
0.49
2.81
3.70
2.66
0.43
0.017
0.086
0.130
0.095
0.015
0.019
0.111
0.146
0.105
0.017
G
H
E
F
C
H
G
D
SOT-89 Mechanical Drawing
A
SOT-89 DIMENSION
MILLIMETERS
INCHES
I
DIM
B
MIN
4.40
1.50
2.30
0.40
1.50
3.00
0.89
4.05
1.4
MAX
4.60
1.7
MIN
MAX
0.181
0.070
0.102
0.020
0.059
0.118
0.047
0.167
0.068
0.017
A
B
C
D
E
F
G
H
I
0.173
0.059
0.090
0.016
0.059
0.118
0.035
0.159
0.055
0.014
2.60
0.52
1.50
3.00
1.20
4.25
1.6
C
H
G
E
D
J
J
0.35
0.44
F
TS431/A/B
7-8
2003/12 rev. B
SOT-23 Mechanical Drawing
A
B
F
SOT-23 DIMENSION
MILLIMETERS
INCHES
MIN
DIM
MIN
2.88
0.39
1.78
0.51
1.59
1.04
0.07
MAX
2.91
0.42
2.03
0.61
1.66
1.08
0.09
MAX
0.115
0.017
0.080
0.024
0.065
0.043
0.004
A
B
C
D
E
F
0.113
0.015
0.070
0.020
0.063
0.041
0.003
E
G
G
D
C
SOP-8 Mechanical Drawing
A
SOP-8 DIMENSION
MILLIMETERS
INCHES
DIM
MIN
4.80
3.80
1.35
0.35
0.40
MAX
5.00
4.00
1.75
0.49
1.25
MIN
MAX
0.196
0.157
0.068
0.019
0.049
9
8
16
A
B
C
D
F
0.189
0.150
0.054
0.014
0.016
B
P
1
G
K
M
P
R
1.27 (typ)
0.05 (typ)
G
0.10
0o
0.25
7o
0.004
0o
0.009
7o
R
M
C
5.80
0.25
6.20
0.50
0.229
0.010
0.244
0.019
F
D
K
TS431/A/B
8-8
2003/12 rev. B
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