TL1431AIZT [STMICROELECTRONICS]
Programmable Voltage Reference; 可编程电压参考
| 型号： | TL1431AIZT |
| 厂家： | 
ST |
| 描述： | Programmable Voltage Reference |
| 文件： | 总13页 (文件大小：268K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TL1431
Programmable Voltage Reference
■ Adjustable output voltage: V
to 36V
REF
■ Sink current capability: 1 to 100mA
■ Typical output impedance: 0.22Ω
■ 0.4% and 0.25% voltage precision
Z
TO92
(Plastic Package)
Description
The TL1431 is a programmable shunt voltage
reference with guaranteed temperature stability
over the entire temperature range of operation.
The output voltage may be set to any value
between 2.5V and 36V with two external resistors.
D
SO-8
(Batwing Plastic Micropackage)
The TL1431 operates with a wide current range
from 1 to 100mA with a typical dynamic
impedance of 0.2Ω.
Order Codes
Temperature
Part Number
Range
Package
Packing
Marking
TL1431CD/CDT
1431C
1431AC
TL1431C
SO-8
TL1431ACD/ACDT
-20, +70°C
TL1431CZ/CZT/CZ-AP
TO92
SO-8
TL1431ACZ/ACZT/ACZ-
AP
TL1431AC
Tube or Tape & Reel
TL1431ID/IDT
1431I
1431AI
TL1431AID/AIDT
TL1431IZ/IZT/IZ-AP
TL1431AIZ/AIZT/AIZ-AP
TL1431IYD/IYDT
-40, + 105°C
TL1431I
TL1431AI
1431IY
TO92
SO-8 (automotive grade level)
Rev 2
1/13
November 2005
www.st.com
13
Pin Diagrams
TL1431
1
Pin Diagrams
Figure 1. TO92 pin connections (top view)
Cathode Anode Reference
1
2
3
Figure 2. SO-8 pin connections (top view)
8
7
6
5
1 - Cathode
2 - Anode
3 - Anode
4 - N.C.
5 - N.C.
6 - Anode
7 - Anode
8 - Reference
1
2
3
4
2/13
TL1431
Absolute Maximum Ratings
2
Absolute Maximum Ratings
Table 1.
Symbol
Key parameters and their absolute maximum ratings
Parameter
Value
37
Unit
V
V
Cathode to Anode Voltage
KA
I
Continuous Cathode Current Range
Reference Input Current Range
Junction temperature
-100 to +150
-0.05 to +10
+150
mA
mA
°C
k
I
ref
T
J
(1)
Power Dissipation
P
mW
°C
625
960
d
TO92
SO-8 batwing
T
Storage Temperature Range
-65 to +150
stg
1. Calculated with TJ=+150°C and TAMB=+25°C with relative RTHJ-A depending on the package
Table 2.
Symbol
Operating conditions
Parameter
Value
V to 36
ref
Unit
V
Cathode to Anode Voltage
Cathode Current
V
KA
I
1 to 100
mA
k
Operating Free-air Temperature Range
T
°C
-200 to +70
-40 to +105
oper
TL1431C/AC
TL1431I/AI
Thermal resistance Junction to Ambient
R
°C/W
130
200
THJ-A
SO 8 Batwing
TO92
3/13
Electrical Characteristics
TL1431
3
Electrical Characteristics
Table 3.
T
= 25°C (unless otherwise specified)
Parameter
amb
TL1431C
TL1431AC
Symbol
Unit
Min. Typ. Max. Min. Typ. Max.
Reference Input Voltage - figure 1
= V , Ik = 10 mA
V
V
ref
2.490 2.500 2.510 2.493 2.500 2.507
V
KA
ref
Reference Input Voltage Deviation Over
(1)
Temperature Range
- figure 1
≤T
∆V
mV
ref
3
20
3
20
V
= Vref, Ik = 10 mA, T
≤ T
amb max
KA
min
Temperature Coefficient of Reference Input
(2)
∆Vref
∆T
Voltage
ppm/°C
---------------
13
90
13
90
V
= Vref, Ik = 10 mA, T
≤T
≤ T
KA
min
amb max
Ratio of Change in Reference Input Voltage to
Change in Cathode to Anode Voltage - figure 2
mV/V
∆Vref
∆Vka
---------------
-2
-1.1
1.5
-2
-1.1
1.5
Ik = 10mA - ∆V = 36V to 3V
KA
Reference Input Current
Ik = 10mA, R1 = 10kΩ, R2 = ∞
I
µA
2.5
3
2.5
3
ref
T
≤T
≤T
amb max
min
Reference Input Current Deviation Over
Temperature Range
∆I
µA
ref
Ik = 10mA, R1 = 10kΩ, R2 =∞
0.2
1.2
0.2
1.2
T
≤T
≤ T
min
amb max
Minimum Cathode Current for Regulation - figure 1
= V
I
mA
nA
Ω
min
0.5
1
0.5
0.6
V
KA
ref
I
Off-State Cathode Current - figure 3
180
500
180
500
off
(3)
Dynamic Impedance
ZKA
0.2
0.5
0.2
0.5
V
= V , ∆ Ik = 1 to100mA, f ≤1kHZ
ref
KA
1. ∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range.
∆Vref = Vref max. - Vref min.
Vref max.
V ref min.
Temperature
T1
T2
2. The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits within
which the reference is guaranteed.
-n
ppm/°C
/°C
ppm
+n
Max
2.5V
min
Temperature
25°C
∆VKA
∆IK
3. The dynamic Impedance is definied as |ZKA| =
----------------
4/13
TL1431
Electrical Characteristics
Table 4.
Symbol
T
= 25°C (unless otherwise specified)
Parameter
amb
TL1431I
TL1431AI
Unit
Min. Typ. Max. Min. Typ. Max.
Reference Input Voltage - figure 1
= V , Ik = 10 mA
V
V
ref
2.490 2.500 2.510 2.493 2.500 2.507
V
KA
ref
Reference Input Voltage Deviation Over
(1)
Temperature Range
- figure 1
≤T
∆V
mV
ref
7
30
7
30
V
= Vref, Ik = 10 mA, T
≤ T
amb max
KA
min
Temperature Coefficient of Reference Input
(2)
∆Vref
∆T
Voltage
ppm/°C
---------------
22
100
2
22
100
2
V
= Vref, Ik = 10 mA, T
≤T
≤ T
amb max
KA
min
Ratio of Change in Reference Input Voltage to
Change in Cathode to Anode Voltage - figure 2
mV/V
∆Vref
---------------
-1.1
1.5
-1.1
1.5
Ik = 10mA - ∆V = 36V to 3V
∆Vka
KA
Reference Input Current
Ik = 10mA, R1 = 10kΩ, R2 = ∞
I
µA
2.5
3
2.5
3
ref
T
≤T
≤T
amb max
min
Reference Input Current Deviation Over
Temperature Range
∆I
µA
ref
Ik = 10mA, R1 = 10kΩ, R2 =∞
0.5
1
0.8
1.2
T
≤T
≤ T
min
amb max
Minimum Cathode Current for Regulation - figure 1
= V
I
mA
nA
Ω
min
0.5
1
0.5
0.7
V
KA
ref
I
Off-State Cathode Current - figure 3
180
500
180
500
off
(3)
Dynamic Impedance
ZKA
0.2
0.5
0.2
0.5
V
= V , ∆ Ik = 1 to100mA, f ≤1kHZ
ref
KA
1. ∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range.
∆Vref = Vref max. - Vref min.
Vref max.
V ref min.
Temperature
T1
T2
2. The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits within
which the reference is guaranteed.
-n
ppm/°C
/°C
ppm
+n
Max
2.5V
min
Temperature
25°C
∆VKA
∆IK
3. The dynamic Impedance is definied as|ZKA| =
----------------
5/13
Electrical Characteristics
Figure 3. Test circuit for V = V
TL1431
Figure 4. Test circuit for V
= V
REF
KA
REF
KA
Input
R
Output
Input
R
Output
IK
R1
IK=10mA
IREF
VKA
VKA
R2
VREF
VREF
R1
V
= V
(1 + -------) + R1 x I
REF REF
R2
KA
Figure 5. Test circuit for I
Figure 6. Test circuit for phase margin and
voltage gain
OFF
VKA=36V
10µF
IK=10mA
IOFF
10µF
Input
VREF
Figure 7. Block diagram of TL1431
Figure 8. Test circuit for response time
Cathode
IK=1mA
Vref
+
-
1 mA
0 mA
Vref
Anode
6/13
TL1431
Electrical Characteristics
Figure 9. Reference voltage vs. temp.
Figure 10. Reference voltage vs. cathode current
2.500
2.498
2.496
2.494
3
2
VKA=VREF
See figure 1
1
2.492
IK=10 mA
0
VKA=VREF=2.5 V
2.490
2.488
2.486
See figure 1
-1
-40
-20
0
20
40
60
80
100 120
-40
-20
0
20
40
60
80
100
Temperature (°C)
Cathode current (mA)
Figure 11. Reference voltage vs. cathode current Figure 12. Reference current vs. temp.
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.0
1.5
1.0
0.5
0.0
VKA=VREF
See figure 1
IK=10 mA
VKA=VREF
See figure 1
0.0
0.2
0.4
0.6
0.8
1.0
-40
-20
0
20
40
60
80
100
120
Cathode current (mA)
Temperature (°C)
Figure 13. Off-state cathode current vs. temp. Figure 14. Ratio of change in V
to change in
REF
V
vs. temp.
KA
0.10
0.08
0.06
0.04
0.02
0.00
0.0
-0.5
-1.0
-1.5
-2.0
VKA = 36V
See figure 3
IK=10 mA
KA=VREF
See figure 2
V
-40
-20
0
20
40
60
80
100 120
-40
-20
0
20
40
60
80
100
120
Temperature(°C)
Temperature (°C)
7/13
Electrical Characteristics
TL1431
Figure 15. Drfit of R vs. temp.
Figure 16. Maximum operating current vs. temp.
KA
0.52
0.50
0.00
IK=10 mA
-0.01
VKA=VREF= 2.5V
0.48
see figure 1
IK=IMIN
0.46
-0.02
-0.03
-0.04
VKA=VREF
See figure 1
0.44
0.42
0.40
-40
-20
0
20
40
60
80
100 120
-40
-20
0
20
40
60
80
100 120
Temperature (°C)
Temperature (°C)
Figure 17. Gain & phase vs. frequency
Figure 18. Stability behaviour with capacitive
loads
100
60
200
150
100
50
VKA=VREF
IK=10 mA
See figure 4
Gain
80
40
20
0
Stable
Area
VKA=5V
Instable
Area
Phase
Stable
Area
60
40
20
0
0
VKA=12V
VKA=24V
-50
-100
-150
-200
-20
-40
1
10
100
Frequency (kHz)
1000
10000
1E-10
1E-9
1E-8
1E-7
1E-6
1E-5
Capacitive Load (F)
Figure 19. Maximum power dissipation
Figure 20. Pulse response for I = 1mA
K
6
100
Current step: 1 mA
Output voltage
TAMB= +25°C
SO8
Batwing
80
4
2
0
TAMB=+25°C
See figure 6
60
TO92
40
Safe
Area
20
0
10
20
30
0
1
2
3
4
5
Cathode voltage (V)
Time (µs)
8/13
TL1431
Package Mechanical Data
4
Package Mechanical Data
®
In order to meet environmental requirements, ST offers these devices in ECOPACK packages.
These packages have a Lead-free second level interconnect. The category of second level
interconnect is marked on the package and on the inner box label, in compliance with JEDEC
Standard JESD97. The maximum ratings related to soldering conditions are also marked on
the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at:
www.st.com.
4.1
SO-8 Batwing Package
SO-8 MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
MAX.
MIN.
MAX.
A
A1
A2
B
1.35
1.75
0.053
0.069
0.10
1.10
0.33
0.19
4.80
3.80
0.25
1.65
0.51
0.25
5.00
4.00
0.04
0.010
0.065
0.020
0.010
0.197
0.157
0.043
0.013
0.007
0.189
0.150
C
D
E
e
1.27
0.050
H
5.80
0.25
0.40
6.20
0.50
1.27
0.228
0.010
0.016
0.244
0.020
0.050
h
L
k
˚ (max.)
8
ddd
0.1
0.04
0016023/C
9/13
Package Mechanical Data
TL1431
4.2
TO92 (Tape & Reel) Package
TO-92 MECHANICA DATA
mm.
mils
TYP.
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
b
4.32
4.95
170.1
194.9
0.36
4.45
3.30
2.41
1.14
12.7
2.16
0.92
0.41
0.51
4.95
3.94
2.67
1.40
15.49
2.41
1.52
0.56
14.2
175.2
129.9
94.9
20.1
194.9
155.1
105.1
55.1
D
E
e
e1
L
44.9
500.0
85.0
609.8
94.9
R
S1
W
36.2
59.8
16.1
22.0
0102782/C
10/13
TL1431
Package Mechanical Data
4.3
TO92 (Tape Ammo Pack) Package
A1
P
T
P
H
d
D0
F1
F2
P2
P0
Millimeters
Typ.
Inches
Dim.
Min
Max.
Min.
Typ.
Max.
AL
A
5.0
5.0
4.0
0.197
0.197
0.157
T
d
0.45
0.018
I1
2.5
11.7
12.4
5.95
2.4
0.098
0.461
0.488
0.234
0.094
-0.039
-0.039
0.689
0.224
0.335
P
12.7
12.7
6.35
2.5
0
13.7
13
0.500
0.500
0.250
0.098
0
0.539
0.512
0.266
0.110
0.039
0.039
0.748
0.248
0.384
0.020
0.787
0.650
0.984
0.165
0.433
PO
P2
F1/F2
∆h
∆P
W
6.75
2.8
1
-1
-1
0
1
0
17.5
5.7
18.0
6
19.0
6.3
9.75
0.5
20
0.709
0.236
0.354
W0
W1
W2
H
8.5
9
H0
H1
DO
L1
15.5
3.8
16
16.5
25
0.610
0.150
0.630
0.157
4.0
4.2
11
11/13
Package Mechanical Data
TL1431
4.4
TO92 (Bulk) Package
Millimeters
Typ.
Inches
Typ.
Dim.
Min
Max.
Min.
Max.
L
B
1.27
3.7
0.05
3.2
4.45
4.58
12.7
0.407
0.35
4.2
5.2
0.126
0.1752
0.1803
0.5
0.1457
0.1969
0.198
0.1654
0.2047
0.2098
O1
C
5.00
5.03
5.33
K
O2
a
0.5
0.508
0.016
0.0138
0.0197
0.02
12/13
TL1431
Revision History
5
Revision History
Date
Revision
Changes
March 2002
1
Initial release.
PPAP references inserted in the datasheet seeTable : Order Codes on
page 1.
Nov. 2005
2
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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All other names are the property of their respective owners
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13/13
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