TL431AA [Wing Shing]
Adjustable Precision Shunt Regulator; 可调式精密并联稳压器
| 型号： | TL431AA |
| 厂家： | 
WING SHING COMPUTER COMPONENTS |
| 描述： | Adjustable Precision Shunt Regulator |
| 文件： | 总7页 (文件大小：294K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TL431A
Adjustable Precision Shunt Regulator
FEATURES
PIN CONNECTIONS
• Programmable Output Voltage to 40V
SOT-89
• Low Dynamic Output Impedance 0.2Ω
K
• Sink Current Capability of 0.1 mA to 100 mA
• Equivalent Full-Range Temperature Coefficient of 50 ppm/oC
• Temperature Compensated for Operation over Full Rated
A
R
TL431ACPK
TO-92
Operating Temperature Range
• Low Output Noise Voltage
R
A
R
A
K
K
TL431ACLP--Bulk Pack
TL431ACLPM-Ammo Pack
• Fast Turn on Respons
• TO-92 or SOT-23 and SOT-89 ,SO8packages
SO8
TL431ACMX
SOT-23
A
CATHODE
ANODE
ANODE
NC
REF
1
2
3
4
8
7
6
5
TL431ALT1
ANODE
ANODE
NC
R
K
DESCRIPTION
The TL431A is a three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges.
The output voltage may be set to any value between Vref (approximately 2.5 volts) and 36 volts with two external resistors. These
devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic,
making these devices excellent replacement for zener diodes in many applications.
The TL431A is characterized for operation from -0oC to +70oC.
SYMBOL
FUNCTIONAL BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
(Operating temperature range applies unless otherwise specified)
Characteristic
Symbol
Value
Unit
Cathode Voltage
VKA
IK
40
V
mA
mA
Cathode Current Range (Continuous)
Reference Input Current Range
Power Dissipation at 25oC:
100 ~ 150
0.05 ~ 10
IREF
PD
TO – 92 Package (R!JA = 178oC/W)
SOT – 23 – 3 Package (R!JA = 625oC/W)
Junction Temperature Range
0.7
0.2
W
W
oC
oC
oC
TJ
Tg
0 ~ 150
Operating Temperature Range
Storage Temperature Range
0 ~ 70
Tstg
-65 ~ +150
1
V
TL431A Adjustable Precision Shunt Regulator
RECOMMENDED OPERATING CONDITIONS
Characteristic
Symbol
Test Condition
Min
Typ
Max
Unit
Cathode Voltage
Cathode Current
VKA
IK
40
V
REF
0.5
100
mA
ELECTRICAL CHARACTERISTICS
(Ta = 25oC, VKA = VREF, IK = 10mA unless otherwise specified)
Characteristic
Symbol
Test Condition
Vka=Vref, Ik=10mA
min ≤ Ta ≤ Tmax
Min
Typ
Max
Unit
Reference Input Voltage
VREF
2.445
2.495
3
2.545
V
Deviation of Reference Input
Voltage Over Full Temperature
Range
VREF(dev)
17
mV
T
Ratio of Change in Reference Input
Voltage to the Change in Cathode
Voltage
∆VREF
∆VKA
-1.4
-2.7
mV/V
∆VKA = 10V-VREF
-1.0
1.8
-2.0
4
∆VKA = 36V- 10V
R1 = 10KΩ, R2 = ∞
Reference Input Current
IREF
µA
µA
Deviation of Reference Input
Current Over Full Temperature
Range
IREF(dev)
0.4
1.2
R1 = 10KΩ, R2 = ∞
Minimum Cathode Current for
Regulation
IK(min)
0.25
0.5
mA
Off-State Cathode Current
Dynamic Impedance
IK(off)
ZKA
VKA = 40V, VREF = 0
0.26
0.22
0.9
µA
0.5
IK = 10mA to 100 mA , f ≤ 1.0KHz
Ω
TEST CIRCUITS
Fig.1. Test Circuit for VKA = VREF
Fig.2. Test Circuit for VKA ≥ VREF
Fig.3. Test Circuit for Ioff
IN PU T
IN P U T
IN PU T
V
K A
V
K A
V
K
A
I
K
I
K (O FF)
I
K
R1
I
R EF
10nF
V
R EF
R2
V
R EF
10nF
V
K A
= VR EF (1+ R 1/R 2)+ IR EF R1
2
TL431A
PAD LAYOUT
Adjustable Precision Shunt Regulator
Y
0,0
X
Chip size:0,81mmx 0,76 mm
Pad size : 94 x 94
Unit
: µm
2
1
3
PAD LOCATION
Unit: µm
Pad No.
Pad Name
Description
X
Y
1
2
3
R
A
K
Reference
Anode
-314
-75
-299
-275
-299
Cathode
231
PHYSICAL CHARACTERISTIC
100 mm (4")
Wafes dia
Wafes width
Scribe width
Passivation
350 ±20µm
90 µm
PSG
Ordering Information
Grade
Accuracy
Marking
Min.
Typ.
Max.
AA
A
B
TL431AA
TL431A
TL431
2.488V
2.475V
2.445V
2.495V
2.495V
2.495V
2.513V
2.525V
2.545V
0.5% of Typ.
1 % of Typ.
2 % of Typ.
Notice: Please don't confuse the version of product (-A,-B,-I Suffix) with Grade of
product (AA, A).
3
TL431A
Adjustable Precision Shunt Regulator
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
3.700
1.400
0.550
0.510
4.700
Min
Max
0.146
0.055
0.022
0.020
0.185
A
A1
b
3.300
1.100
0.380
0.360
4.400
3.430
4.300
0.130
0.043
0.015
0.014
0.173
0.135
0.169
c
D
D1
E
4.700
0.185
e
1.270 TYP
0.050 TYP
e1
L
2.440
14.100
2.640
14.500
1.600
0.380
0.096
0.555
0.104
0.571
0.063
0.015
Φ
h
0.000
0.000
4
TL431A
Adjustable Precision Shunt Regulator
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
1.600
0.520
0.580
0.440
4.600
Min
Max
0.063
0.197
0.023
0.017
0.181
A
b
b1
c
1.400
0.320
0.400
0.350
4.400
0.055
0.013
0.016
0.014
0.173
D
D1
E
E1
e
e1
L
1.550 REF
0.061 REF
2.300
3.940
2.600
4.250
0.091
0.155
0.102
0.167
1.500 TYP
3.000 TYP
0.060TYP
0.118TYP
0.900
1.200
0.035
0.047
5
TL431A
Adjustable Precision Shunt Regulator
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
A2
b
c
D
E
E1
e
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
0.041
0.000
0.041
0.012
0.004
0.111
0.059
0.104
0.049
0.004
0.045
0.020
0.008
0.119
0.067
0.116
0.950(BSC)
0.037(BSC)
e1
L
θ
1.800
0.300
0°
2.000
0.600
8°
0.071
0.012
0°
0.079
0.024
8°
6
TL431A
Adjustable Precision Shunt Regulator
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
A2
b
c
D
E
E1
e
1.350
0.100
1.350
0.330
0.170
4.700
3.800
5.800
1.750
0.250
1.550
0.510
0.250
5.100
4.000
6.200
0.053
0.004
0.053
0.013
0.006
0.185
0.150
0.228
0.069
0.010
0.061
0.020
0.010
0.200
0.157
0.244
1.270(BSC)
0.050(BSC)
L
θ
0.400
0°
1.270
8°
0.016
0°
0.050
8°
7
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