TL431A [Wing Shing]
Adjustable Precision Shunt Regulator (I Grade); 可调式精密并联稳压器（ I级）
| 型号： | TL431A |
| 厂家： | 
WING SHING COMPUTER COMPONENTS |
| 描述： | Adjustable Precision Shunt Regulator (I Grade) |
| 文件： | 总8页 (文件大小：315K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TL431I
Adjustable Precision Shunt Regulator (I Grade)
FEATURES
PIN CONNECTIONS
• Programmable Output Voltage to 40V
• Low Dynamic Output Impedance 0.2Ω
SOT-89
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
TL431ICPK
Operating Temperature Range
• Low Output Noise Voltage
R
A
TO-92
R
A
K
K
• Fast Turn on Respons
TL431ICLP
• Provided Pb-Free packages from the end of 2004
* ESD tolerance (human body model) 2000V
* Operating Temperature Range -60~+125 C
SO8
TL431ACMX
SOT-23
A
CATHODE
ANODE
ANODE
NC
REF
1
2
3
4
8
7
6
5
TL431ILT1
ANODE
ANODE
NC
R
K
DESCRIPTION
The TL431I 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 40 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 TL431I is characterized for operation from -60oC to +125 oC.
SYMBOL
FUNCTIONAL BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
(Operating temperature range applies unless otherwise specified)
Characteristic
Symbol
Value
Unit
Cathode Voltage
VKA
IK
42
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
-60 ~+125
Tstg
-65 ~ +150
1
TL431I
Adjustable Precision Shunt Regulator (I Grade)
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
Min
2.445
Typ
Max
Unit
Reference Input Voltage
VREF
2.495
3
2.545
V
Deviation of Reference Input
Voltage Over Full Temperature
Range
VREF(dev)
17
mV
T
min ≤ Ta ≤ Tmax
Vka=Vref, Ik=10mA
∆VKA = 10V-VREF
Ratio of Change in Reference Input
Voltage to the Change in Cathode
Voltage
∆VREF
∆VKA
-1.4
-2.7
mV/V
-1.0
-2.0
4
∆VKA = 36V- 10V
R1 = 10KΩ, R2 = ∞
Reference Input Current
IREF
1.5
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)
0.50
1
mA
Off-State Cathode Current
Dynamic Impedance
IK(off)
ZKA
VKA = 42V, VREF = 0
0.05
0.15
1.0
µA
0.5
IK = 10mA to 100 mA , f ≤ 1.0KHz
Ω
Ordering Information
Grade
AA
A
Accuracy
Marking
TL431AA
TL431A
TL431
Min.
2.488V
2.475V
2.445V
Typ.
Max.
2.495V
2.495V
2.495V
2.513V
2.525V
2.545V
0.5% of Typ.
1 % of Typ.
2 % of Typ.
B
Notice: Please don't confuse the version of product (-A,-I,-B Suffix) with Grade of product (AA,A,B).
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
B
V
R EF
R2
V
R EF
V
K A
= VR EF (1+ R 1/R 2)+ IR EF R1
2
TL431I
Adjustable Precision Shunt Regulator (I Grade)
BONDING DIAGRAM
2
1
3
Cathod
Ref
Anode
Chip size: 0,62x 0,82
Pad size : 80 x 80
Unit
: mm
PAD LOCATION
Pad No.
Pad Name
Description
X
Y
2
3
1
A
K
R
Anode
Cathode
Reference
472
68
672
672
94
244.5
PHYSICAL CHARACTERISTIC
100 mm (4")
Wafes dia
280 ±20mm
80 mm
Wafes width
Scribe width
PSG
Passivation
Backside metallization
Without metallization
Fig. 1 Maximum Power Dissipation
3
TL431I
Adjustable Precision Shunt Regulator (I Grade)
Fig. 2 Small Signal Voltage Amplification vs. Frequency
Fig. 3 Pulse Response
4
TL431I
Adjustable Precision Shunt Regulator (I Grade)
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
5
TL431I
Adjustable Precision Shunt Regulator (I Grade)
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
6
TL431I
Adjustable Precision Shunt Regulator (I Grade)
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°
7
TL431I
Adjustable Precision Shunt Regulator (I Grade)
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°
8
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