MCC
Micro Commercial Components
TM
Features
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omponents
20736 Marilla Street Chatsworth
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TL431AU
Maximum Ratings
Lead Free Finish/RoHS Compliant ("P" Suffix designates
RoHS Compliant. See ordering information)
Epoxy meets UL 94 V-0 flammability rating
Moisure Sensitivity Level 1
Programmable Output Voltage 36V
Sink Current Capability of 0.1mA to 100 mA
Temperature Compensated for operation over full rated operating
temperature range
Low output noise voltage and Fast turn on response
The Reference Input Voltage tolerance is 1%
Marking Code: 431
Halogen
free available upon request by adding suffix "-HF"
Parameter
Symbol
V
KA
I
K
I
REF
P
D
R
θJA
T
J
T
g
T
STG
Programmable
Precision Regulator
SOT-23
A
D
1
Value
37
-100~150
0.05~10
0.2
300
0--150
0---70
-55---+150
Unit
V
mA
mA
W
/W
G
F
2
C
3
B
Recommended Operating Conditions
Parameter
Cathode Voltage
Cathode Current Range
Cathode Voltage
Cathode Current Range
Reference Input Current Range
Power Dissipation at 25
Thermal Resistance Junction to Ambient
Junction Temperature
Operating Temperature
Storage Temperature Range
E
1. (A) ANODE
2. (R) REFERENCE
3. (K) CATHODE
H
J
K
DIMENSIONS
Electrical Characteristics @ 25°C Unless Otherwise Specified
Parameter
Reference Input
Voltage
Deviation of
reference input
voltage
Ratio of Change in
Reference Input
Voltage to the
Change in Cathode
Voltage
Reference Input
Current
Deviation of
Reference Input
Current Over Full
Temperature Range
Minimum Cathode
Current for
Regulation
Off-State Cathode
Current
Sym
Min
2.475V
Sym
V
KA
I
K
Min
V
REF
1.0
Max
36
100
Unit
V
mA
Typ
2.500V
Max
2.525V
Test conditions
V
ref
V
ref(dev)
3.0mV
17mV
T
min
Ta
T
max
DIM
A
B
C
D
E
F
G
H
J
K
INCHES
MIN
MAX
.110
.120
.083
.104
.047
.055
.035
.041
.070
.081
.018
.024
.0005
.0039
.035
.044
.003
.007
.015
.020
MM
MIN
2.80
2.10
1.20
.89
1.78
.45
.013
.89
.085
.37
MAX
3.04
2.64
1.40
1.03
2.05
.60
.100
1.12
.180
.51
NOTE
-1.4
-2.7
V
KA
=10V V
ref
V
ref
/
V
KA
Suggested Solder
Pad Layout
.031
.800
.035
.900
.079
2.000
inches
mm
-1.0
-2.0
V
KA
=36V 10V
I
ref
1.8µA
4.0µA
I
KA
=10mA,
R
2
=
R
1
=10K
I
ref
/
T
0.4µA
1.2µA
I
KA
=10mA,
R
2
=
R
1
=10K
T
A
=full Temperature
.037
.950
I
KA(min)
I
KA
(off)
Z
KA
0. 5mA
0.26µA
0.22
1.0mA
1.0µA
0.5
V
KA
=36V, V
REF
=0V
I
KA
=10 to 100mA,
f 1.0KHz
.037
.950
Dynamic Impedance
Revision:
B
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MCC
Micro Commercial Components
TM
TL431AU
Input
V
KA
Input
R1
I
ref
I
K
V
KA
Input
I
K
I
off
V
KA
V
ref
R2
V
ref
V
KA
+
V
ref
1
)
R1
)
I
S
R1
ref
R2
Figure 1. Test Circuit for V
KA
= V
ref
Figure 2. Test Circuit for V
KA
> V
ref
Figure 3. Test Circuit for I
off
150
800
IK , CATHODE CURRENT (mA)
IK , CATHODE CURRENT (
µ
A)
100
50
0
-50
-100
-2.0
V
KA
= V
ref
T
A
= 25°C
Input
I
K
V
KA
600
Input
400
200
0
V
KA
= V
ref
T
A
= 25°C
V
KA
I
K
I
Min
-1.0
0
1.0
2.0
3.0
-200
-1.0
0
1.0
V
KA
, CATHODE VOLTAGE (V)
2.0
3.0
V
KA
, CATHODE VOLTAGE (V)
Figure 4. Cathode Current versus
Cathode Voltage
Figure 5. Cathode Current versus
Cathode Voltage
Vref , REFERENCE INPUT VOLTAGE (mV)
2580
2560
2540
2520
2500
2480
2460
Input
V
ref
Vref Max = 2525mV
Iref , REFERENCE INPUT CURRENT (
µ
A)
2600
V
KA
I
K
V
KA
= V
ref
I
K
= 10 mA
3.0
2.5
2.0
1.5
Vref Typ = 2500mV
I
K
= 10 mA
1.0
0.5
0
-55
-25
0
25
50
75
100
125
Input
10k I
ref
I
K
V
KA
2440
2420
2400
-55
-25
0
25
50
Vref Min = 2475mV
75
100
125
T
A
, AMBIENT TEMPERATURE (°C)
T
A
, AMBIENT TEMPERATURE (°C)
Figure 6. Reference Input Voltage versus
Ambient Temperature
Figure 7. Reference Input Current versus
Ambient Temperature
Revision:
B
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MCC
Micro Commercial Components
∆
Vref , REFERENCE INPUT VOLTAGE (mV)
TM
I
K
= 10 mA
T
A
= 25°C
-8.0
Ioff , OFF-STATE CATHODE CURRENT (nA)
0
1.0 k
100
10
1.0
0.1
0.01
-55
-16
Input
R1
I
K
V
ref
V
KA
Input
V
KA
= 36 V
V
ref
= 0 V
I
off
V
KA
-24
R2
-32
0
10
20
30
40
-25
0
25
50
75
100
125
V
KA
, CATHODE VOLTAGE (V)
T
A
, AMBIENT TEMPERATURE (5C)
Figure 8. Change in Reference Input
Voltage versus Cathode Voltage
Figure 9. Off–State Cathode Current
versus Ambient Temperature
100
|ZKA|, DYNAMIC IMPEDANCE (
Ω
)
50
10
I
K
-
+
Output
|ZKA|, DYNAMIC IMPEDANCE (
Ω
)
1.0 k
T
A
= 25_C
∆
I
K
= 1.0 mA to 100 mA
0.320
0.300
0.280
0.260
0.240
0.220
0.200
-55
-25
0
25
50
75
100
125
Gnd
V
KA
= V
ref
∆
I
K
= 1.0 mA to 100 mA
f
≤
1.0 kHz
Output
1.0 k
I
K
50
-
+
Gnd
1.0
0.1
1.0 k
10 k
100 k
f, FREQUENCY (MHz)
1.0 M
10 M
T
A
, AMBIENT TEMPERATURE (_C)
Figure 10. Dynamic Impedance
versus Frequency
Figure 11. Dynamic Impedance
versus Ambient Temperature
A VOL
, OPEN LOOP VOLTAGE GAIN (dB)
60
50
40
30
20
10
0
-10
1.0 k
10 k
100 k
f, FREQUENCY (MHz)
1.0 M
10 M
NOISE VOLTAGE (nV/
√
Hz)
80
9.0
µF
15 k
8.25 k
I
K
Output
230
Gnd
60
40
I
K
= 10 mA
T
A
= 25_C
Input
20
V
KA
= V
ref
I
K
= 10 mA
T
A
= 25°C
I
K
Output
0
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
Revision:
B
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MCC
Micro Commercial Components
TM
Ordering Information :
Device
Part Number-TP
Note : Adding "-HF" suffix for halogen free, eg. Part Number-TP-HF
Packing
Tape&Reel;3Kpcs/Reel
***IMPORTANT NOTICE***
Micro Commercial Components Corp.
reserves the right to make changes without further notice to any product herein to
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
coverage or other assistance for parts bought from Unauthorized Sources.
MCC is committed to combat this global
problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized
distributors.
Revision:
B
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