TL431BU [MCC]
Programmable Precision Regulator; 可编程精密稳压器
| 型号： | TL431BU |
| 厂家： | 
Micro Commercial Components |
| 描述： | Programmable Precision Regulator |
| 文件： | 总4页 (文件大小：232K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M C C
Micro Commercial Components
TM
ꢀꢁꢂꢃꢄꢅꢆꢄꢇꢇꢈꢃꢂꢁꢉꢊꢅꢆomponents
20736 Marilla Street Chatsworth
ꢆꢋꢅꢌꢍꢎꢍꢍ
ꢏꢐꢄꢑꢈꢒꢅꢓꢔꢍꢔ ꢅ!ꢕꢍ"#ꢌꢎꢎ
$ꢉ%ꢒꢅ ꢅ ꢅ ꢓꢔꢍꢔ ꢅ!ꢕꢍ"#ꢌꢎꢌ
TL431BU
Features
·
Lead Free Finish/RoHS Compliant ("P" Suffix designates
RoHS Compliant. See ordering information)
Epoxy meets UL 94 V-0 flammability rating
Programmable
·
·
•
Moisure Sensitivity Level 1
Programmable Output Voltage 36V
Precision Regulator
•
•
Sink Current Capability of 0.1mA to 100 mA
Temperature Compensated for operation over full rated operating
temperature range
SOT-23
•
•
•
Low output noise voltage and Fast turn on response
The Reference Input Voltage tolerance is 0.5%
Marking Code: 431
A
D
1
Maximum Ratings
B
C
2
3
Parameter
Symbol
Value
Unit
Cathode Voltage
Cathode Current Range
Reference Input Current Range
Power Dissipation at 25R
VKA
IK
IREF
PD
37
-100~150
0.05~10
0.2
V
mA
mA
W
F
E
1. (A) ANODE
2. (R) REFERENCE
3. (K) CATHODE
R/W
R
Thermal Resistance Junction to Ambient
Operating Temperature
RθJA
Topr
300
0---70
H
G
J
R
Storage Temperature Range
TSTG
-55---+150
K
Recommended Operating Conditions
DIMENSIONS
Parameter
Cathode Voltage
Cathode Current Range
Sym
VKA
IK
Min
VREF
1.0
Max
36
100
Unit
V
mA
INCHES
MIN
MM
DIM
A
MAX
MIN
2.80
2.10
1.20
.89
MAX
3.04
2.64
1.40
1.03
2.05
.60
NOTE
.110
.083
.047
.035
.070
.018
.120
.098
.055
.041
.081
.024
.0039
.044
.007
.020
Electrical Characteristics @ 25°C Unless Otherwise Specified
B
C
D
E
Parameter
Reference Input
Voltage
Sym
Min
Typ
Max
Test conditions
2.487V
2.500V
2.512V
VKA=VREF, IKA=10mA
Vref
1.78
.45
F
Deviation of
reference input
voltage
Ratio of Change in
Reference Input
Voltage to the
Change in Cathode
Voltage
G
H
J
.0005
.035
.003
.015
.013
.89
.100
1.12
.180
.51
VKA=VREF, IKA=10mA
3.0mV
-1.4
17mV
-2.7
Vref(dev)
T
min!Ta!Tmax
.085
.37
K
bVKA=10V,Vref
Suggested Solder
Pad Layout
bVref/
bVKA
-1.0
-2.0
b[VKA=36V,10V
.031
.800
Reference Input
Current
IKA=10mA,
R1=10KĀꢀ R2=$
1.8µA
4.0µA
Iref
.035
.900
Deviation of
IKA=10mA,
R1=10KĀꢀ R2=$[
TA=full Temperature
bIref/
bT
Reference Input
Current Over Full
Temperature Range
Minimum Cathode
Current for
.079
2.000
0.4µA
1.2µA
inches
mm
0. 5mA
1.0mA
IKA(min)
Regulation
Off-State Cathode
Current
.037
.950
0.26µA
0.22Ā
1.0µA
0.5Ā
IKA(off)
ZKA
VKA=36V, VREF=0V
.037
.950
IKA=10 to 100mA,
f!1.0KHz
Dynamic Impedance
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Revision: A
2011/01/01
M C C
Micro Commercial Components
TM
TL431BU
Input
R1
V
KA
Input
V
KA
Input
V
KA
I
off
I
K
I
K
I
ref
V
ref
R2
R1
R2
refĂǒĂ1 ) ĂǓ) I
V
+ V
ĂSĂR1
ref
KA
V
ref
Figure 1. Test Circuit for V = V
Figure 2. Test Circuit for V > V
Figure 3. Test Circuit for I
off
KA
ref
KA
ref
150
800
V
KA
= V
ref
V
KA
= V
ref
T = 25°C
T = 25°C
A
A
I
100
50
600
400
200
0
Input
V
KA
K
Min
Input
V
KA
I
I
K
0
-50
-100
-200
-2.0
-1.0
0
1.0
2.0
3.0
-1.0
0
1.0
V , CATHODE VOLTAGE (V)
KA
2.0
3.0
V
KA
, CATHODE VOLTAGE (V)
Figure 4. Cathode Current versus
Cathode Voltage
Figure 5. Cathode Current versus
Cathode Voltage
2600
2580
2560
2540
2520
2500
3.0
V
KA
Input
I
K V = V
KA
= 10 mA
ref
Vref Max = 2525mV
2.5
2.0
1.5
1.0
0.5
0
I
K
V
ref
Vref Typ = 2500mV
Vref Min = 2475mV
I
= 10 mA
I
2480
2460
2440
K
V
KA
Input
10k
I
ref
K
2420
2400
-55
-25
0
25
50
75
100
125
-55
-25
0
25
50
75
100
125
T , AMBIENT TEMPERATURE (°C)
A
T , AMBIENT TEMPERATURE (°C)
A
Figure 6. Reference Input Voltage versus
Ambient Temperature
Figure 7. Reference Input Current versus
Ambient Temperature
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Revision: A
2011/01/01
M C C
Micro Commercial Components
TM
0
-8.0
-16
-24
-32
1.0 k
100
10
I
T
= 10 mA
= 25°C
K
A
V
KA
V
ref
= 36 V
= 0 V
Input
R1
V
KA
1.0
I
K
V
KA
Input
I
off
R2
V
ref
0.1
0.01
-55
-25
0
25
50
75
100
125
0
10
20
, CATHODE VOLTAGE (V)
30
40
V
T , AMBIENT TEMPERATURE (5C)
KA
A
Figure 8. Change in Reference Input
Voltage versus Cathode Voltage
Figure 9. Off–State Cathode Current
versus Ambient Temperature
100
0.320
0.300
T
= 25_C
A
1.0 k
50
V
KA
= V
ref
Output
K
∆ I = 1.0 mA to 100 mA
K
∆ I = 1.0 mA to 100 mA
K
I
f ≤ 1.0 kHz
-
+
Output
K
0.280
0.260
0.240
0.220
0.200
Gnd
10
1.0
0.1
1.0Ăk
50
I
-
+
Gnd
1.0 k
10 k
100 k
f, FREQUENCY (MHz)
1.0 M
10 M
-55
-25
0
25
50
75
100
125
T , AMBIENT TEMPERATURE (_C)
A
Figure 10. Dynamic Impedance
versus Frequency
Figure 11. Dynamic Impedance
versus Ambient Temperature
80
60
40
20
0
60
Output
I
K
50
40
30
20
10
0
15Ăk
9.0 µF
230
8.25Ăk
Gnd
V
= V
ref
KA
I = 10 mA
K
T = 25°C
A
Input
Output
I
T
= 10 mA
= 25_C
K
I
K
A
-10
1.0 k
10 k
100 k
f, FREQUENCY (MHz)
1.0 M
10 M
10
100
1.0 k
f, FREQUENCY (Hz)
10 k
100 k
Figure 12. Open–Loop Voltage Gain
versus Frequency
Figure 13. Spectral Noise Density
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Revision: A
2011/01/01
M C C
Micro Commercial Components
TM
Ordering Information :
Device
Packing
Part Number-TP
Tape&Reel;3Kpcs/Reel
***IMPORTANT NOTICE***
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make corrections, modifications , enhancements , improvements , or other changes . Micro Commercial Components
Corp . does not assume any liability arising out of the application or use of any product described herein; neither does it
convey any license under its patent rights ,nor the rights of others . The user of products in such applications shall assume all
risks of such use and will agree to hold Micro Commercial Components Corp . and all the companies whose products are
represented on our website, harmless against all damages.
***LIFE SUPPORT***
MCC's products are not authorized for use as critical components in life support devices or systems without the express written
approval of Micro Commercial Components Corporation.
***CUSTOMER AWARENESS***
Counterfeiting of semiconductor parts is a growing problem in the industry. Micro Commercial Components (MCC) is taking
strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. MCC strongly encourages
customers to purchase MCC parts either directly from MCC or from Authorized MCC Distributors who are listed by country on
our web page cited below. Products customers buy either from MCC directly or from Authorized MCC Distributors are genuine
parts, have full traceability, meet MCC's quality standards for handling and storage. MCC will not provide any warranty
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problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized
distributors.
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Revision: A
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