TLV431, NCV431, SCV431
Low Voltage Precision
Adjustable Shunt Regulator
The TLV431A, B and C series are precision low voltage shunt
regulators that are programmable over a wide voltage range of 1.24 V to
16 V. The TLV431A series features a guaranteed reference accuracy of
±1.0%
at 25°C and
±2.0%
over the entire industrial temperature range of
−40°C to 85°C. The TLV431B series features higher reference accuracy
of
±0.5%
and
±1.0%
respectively. For the TLV431C series, the accuracy
is even higher. It is
±0.2%
and
±1.0%
respectively. These devices exhibit
a sharp low current turn−on characteristic with a low dynamic impedance
of 0.20
W
over an operating current range of 100
mA
to 20 mA. This
combination of features makes this series an excellent replacement for
zener diodes in numerous applications circuits that require a precise
reference voltage. When combined with an optocoupler, the
TLV431A/B/C can be used as an error amplifier for controlling the
feedback loop in isolated low output voltage (3.0 V to 3.3 V) switching
power supplies. These devices are available in economical TO−92−3 and
micro size TSOP−5 and SOT−23−3 packages.
Features
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TO−92
LP SUFFIX
CASE 29
12
1
3
STRAIGHT LEAD
BULK PACK
3
BENT LEAD
TAPE & REEL
AMMO PACK
2
4
5
1
2
3
TSOP−5
SN SUFFIX
CASE 483
•
Programmable Output Voltage Range of 1.24 V to 16 V
•
Voltage Reference Tolerance
±1.0%
for A Series,
±0.5%
for B Series
•
•
•
•
•
•
and
±0.2%
for C Series
Sharp Low Current Turn−On Characteristic
Low Dynamic Output Impedance of 0.20
W
from 100
mA
to 20 mA
Wide Operating Current Range of 50
mA
to 20 mA
Micro Miniature TSOP−5, SOT−23−3 and TO−92−3 Packages
NCV and SCV Prefix for Automotive and Other Applications
Requiring Unique Site and Control Change Requirements;
AEC−Q100 Qualified and PPAP Capable
These are Pb−Free and Halide−Free Devices
3
1
2
SOT−23
SN1 SUFFIX
CASE 318
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
Applications
•
Low Output Voltage (3.0 V to 3.3 V) Switching Power Supply
•
•
•
•
•
Error Amplifier
Adjustable Voltage or Current Linear and Switching Power Supplies
Voltage Monitoring
Current Source and Sink Circuits
Analog and Digital Circuits Requiring Precision References
Low Voltage Zener Diode Replacements
Reference (R)
+
-
1.24 V
ref
Cathode (K)
DEVICE MARKING INFORMATION
AND PIN CONNECTIONS
See general marking information in the device marking
section on page 13 of this data sheet.
Anode (A)
Figure 1. Representative Block Diagram
©
Semiconductor Components Industries, LLC, 2000
1
June, 2017 − Rev. 23
Publication Order Number:
TLV431A/D
TLV431, NCV431, SCV431
Cathode (K)
Cathode (K)
Reference (R)
Reference (R)
Anode (A)
Device Symbol
Anode (A)
The device contains 13 active transistors.
Figure 2. Representative Device Symbol and Schematic Diagram
MAXIMUM RATINGS
(Full operating ambient temperature range applies, unless otherwise noted)
Rating
Cathode to Anode Voltage
Cathode Current Range, Continuous
Reference Input Current Range, Continuous
Thermal Characteristics
LP Suffix Package, TO−92−3 Package
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
SN Suffix Package, TSOP−5 Package
Thermal Resistance, Junction−to−Ambient
SN1 Suffix Package, SOT−23−3 Package
Thermal Resistance, Junction−to−Ambient
Operating Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
TLV431
NCV431, SCV431
Symbol
V
KA
I
K
I
ref
Value
18
−20 to 25
*0.05
to 10
Unit
V
mA
mA
°C/W
R
qJA
R
qJC
R
qJA
R
qJA
T
J
T
A
T
stg
178
83
226
491
150
*40
to 85
*40
to 125
*65
to 150
°C
°C
°C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
NOTE: This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per JEDEC JESD22−A114F, Machine Model Method 200 V per JEDEC JESD22−A115C,
Charged Device Method 1000 V per JEDEC JESD22−C101E. This device contains latch−up protection and exceeds
±100
mA per
JEDEC standard JESD78.
T
P
D
+
*
T
J(max)
A
R
qJA
RECOMMENDED OPERATING CONDITIONS
Condition
Cathode to Anode Voltage
Cathode Current
Symbol
V
KA
I
K
Min
V
ref
0.1
Max
16
20
Unit
V
mA
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
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TLV431, NCV431, SCV431
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise noted)
TLV431A
Characteristic
Reference Voltage (Figure 3)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
= 25°C)
(T
A
= T
low
to T
high
, Note 1)
Reference Input Voltage Deviation Over Temperature (Figure 3)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
= T
low
to T
high
, Notes 1, 2, 3)
Ration of Reference Input Voltage Change to Cathode Voltage
Change (Figure 4)
(V
KA
= V
ref
to 16 V, I
K
= 10 mA)
Reference Terminal Current (Figure 4)
(I
K
= 10 mA, R1 = 10 kW, R2 = open)
Reference Input Current Deviation Over Temperature (Figure 4)
(I
K
= 10 mA, R1 = 10 kW, R2 = open, Notes 1, 2, 3)
Minimum Cathode Current for Regulation (Figure 3)
Off−State Cathode Current (Figure 5)
(V
KA
= 6.0 V, V
ref
= 0)
(V
KA
= 16 V, V
ref
= 0)
Dynamic Impedance (Figure 3)
(V
KA
= V
ref
, I
K
=0.1 mA to 20 mA, f
≤
1.0 kHz, Note 4)
Symbol
V
ref
1.228
1.215
DV
ref
−
1.240
−
7.2
1.252
1.265
20
1.234
1.228
−
1.240
−
7.2
1.246
1.252
mV
20
mV
V
mA
−
DI
ref
I
K(min
)
I
K(off)
−
−
|Z
KA
|
−
0.25
0.4
−
0.25
0.4
0.01
0.012
0.04
0.05
−
−
0.01
0.012
0.04
0.05
W
−
−
0.15
0.04
30
0.3
0.08
80
−
−
−
0.15
0.04
30
0.3
mA
0.08
80
mA
mA
Min
Typ
Max
Min
TLV431B
Typ
Max
Unit
V
DV
ref
DV
KA
I
ref
−
−0.6
−1.5
−
−0.6
−1.5
1. Ambient temperature range: T
low
=
*40°C,
T
high
= 85°C.
2. Guaranteed but not tested.
3. The deviation parameters
DV
ref
and
DI
ref
are defined as the difference between the maximum value and minimum value obtained over the
full operating ambient temperature range that applied.
V
ref
Max
DV
ref
= V
ref
Max − V
ref
Min
V
ref
Min
T
1
Ambient Temperature
T
2
DT
A
= T
2
− T
1
The average temperature coefficient of the reference input voltage,
aV
ref
is defined as:
(DV )
ref
V
(T
+
25°C)
ref A
DT
A
10
6
αV
ref
ppm
+
°C
aV
ref
can be positive or negative depending on whether V
ref
Min or V
ref
Max occurs at the lower ambient temperature, refer to Figure 8.
Example:
DV
ref
= 7.2 mV and the slope is positive,
Example:
V
ref
@ 25°C = 1.241 V
Example:
DT
A
= 125°C
0.0072
ppm
+
1.241
αV
ref
°C
125
4. The dynamic impedance Z
KA
is defined as:
⏐Z
DV
KA
⏐
+
KA
DI
K
10
6
+
46 ppm
°C
When the device is operating with two external resistors, R1 and R2, (refer to Figure 4) the total dynamic impedance of the circuit is given by:
⏐Z
KA
′⏐
+
⏐Z
KA
⏐
1
)
R1
R2
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TLV431, NCV431, SCV431
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise noted)
TLV431C
Characteristic
Reference Voltage (Figure 3)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
= 25°C)
(T
A
= T
low
to T
high
, Note 5)
Reference Input Voltage Deviation Over Temperature (Figure 3)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
= T
low
to T
high
, Notes 5, 6, 7)
Ration of Reference Input Voltage Change to Cathode Voltage Change (Figure 4)
(V
KA
= V
ref
to 16 V, I
K
= 10 mA)
Reference Terminal Current (Figure 4)
(I
K
= 10 mA, R1 = 10 kW, R2 = open)
Reference Input Current Deviation Over Temperature (Figure 4)
(I
K
= 10 mA, R1 = 10 kW, R2 = open, Notes 5, 6, 7)
Minimum Cathode Current for Regulation (Figure 3)
Off−State Cathode Current (Figure 5)
(V
KA
= 6.0 V, V
ref
= 0)
(V
KA
= 16 V, V
ref
= 0)
Dynamic Impedance (Figure 3)
(V
KA
= V
ref
, I
K
= 0.1 mA to 20 mA, f
≤
1.0 kHz, Note 8)
Symbol
V
ref
1.237
1.228
DV
ref
DV
ref
DV
KA
I
ref
−
DI
ref
I
K(min
)
I
K(off)
−
−
|Z
KA
|
−
0.25
0.4
0.01
0.012
0.04
0.05
W
−
−
0.15
0.04
30
0.3
mA
0.08
80
mA
mA
−
−
1.240
−
7.2
−0.6
1.243
1.252
mV
2.0
−1.5
mV
V
mA
Min
Typ
Max
Unit
V
5. Ambient temperature range: T
low
=
*40°C,
T
high
= 85°C.
6. Guaranteed but not tested.
7. The deviation parameters
DV
ref
and
DI
ref
are defined as the difference between the maximum value and minimum value obtained over the
full operating ambient temperature range that applied.
V
ref
Max
DV
ref
= V
ref
Max − V
ref
Min
V
ref
Min
T
1
Ambient Temperature
T
2
DT
A
= T
2
− T
1
The average temperature coefficient of the reference input voltage,
aV
ref
is defined as:
(DV )
ref
V
(T
+
25°C)
ref A
DT
A
10
6
αV
ref
ppm
+
°C
aV
ref
can be positive or negative depending on whether V
ref
Min or V
ref
Max occurs at the lower ambient temperature, refer to Figure 8.
Example:
DV
ref
= 7.2 mV and the slope is positive,
Example:
V
ref
@ 25°C = 1.241 V
Example:
DT
A
= 125°C
0.0072
ppm
+
1.241
αV
ref
°C
125
8. The dynamic impedance Z
KA
is defined as:
⏐Z
DV
KA
⏐
+
KA
DI
K
10
6
+
46 ppm
°C
When the device is operating with two external resistors, R1 and R2, (refer to Figure 4) the total dynamic impedance of the circuit is given by:
⏐Z
KA
′⏐
+
⏐Z
KA
⏐
1
)
R1
R2
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TLV431, NCV431, SCV431
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise noted. NCV prefix indicates TSOP package device. SCV prefix
indicates SOT−23 package device.)
NCV431A, SCV431A
Characteristic
Reference Voltage (Figure 3)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
= 25°C)
(T
A
=
*40°C
to 85°C)
(T
A
=
*40°C
to 125°C)
Reference Input Voltage Deviation Over Temperature (Figure 3)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
=
*40°C
to 85°C, Notes 9, 10)
(V
KA
= V
ref
, I
K
= 10 mA, T
A
=
*40°C
to 125°C, Notes 9, 10)
Ration of Reference Input Voltage Change to Cathode Voltage Change (Figure 4)
(V
KA
= V
ref
to 16 V, I
K
= 10 mA)
Reference Terminal Current (Figure 4)
(I
K
= 10 mA, R1 = 10 kW, R2 = open)
Reference Input Current Deviation Over Temperature (Figure 4)
(I
K
= 10 mA, R1 = 10 kW, R2 = open, T
A
=
*40°C
to 85°C, Notes 9, 10)
(I
K
= 10 mA, R1 = 10 kW, R2 = open, T
A
=
*40°C
to 125°C, Notes 9, 10)
Minimum Cathode Current for Regulation (Figure 3)
Off−State Cathode Current (Figure 5)
(V
KA
= 6.0 V, V
ref
= 0)
(V
KA
= 16 V, V
ref
= 0)
Dynamic Impedance (Figure 3)
(V
KA
= V
ref
, I
K
=0.1 mA to 20 mA, f
≤
1.0 kHz, Note 11)
Symbol
V
ref
1.228
1.215
1.211
DV
ref
−
−
−
1.240
−
−
7.2
7.2
−0.6
1.252
1.265
1.265
mV
20
24
−1.5
mV
V
mA
−
DI
ref
−
−
−
−
−
|Z
KA
|
−
0.25
0.4
0.15
0.04
−
30
0.01
0.012
0.3
mA
0.08
0.10
80
0.04
0.05
W
mA
mA
Min
Typ
Max
Unit
V
DV
ref
DV
KA
I
ref
I
K(min
)
I
K(off)
9. Guaranteed but not tested.
10. The deviation parameters
DV
ref
and
DI
ref
are defined as the difference between the maximum value and minimum value obtained over the
full operating ambient temperature range that applied.
V
ref
Max
DV
ref
= V
ref
Max − V
ref
Min
V
ref
Min
T
1
Ambient Temperature
T
2
DT
A
= T
2
− T
1
The average temperature coefficient of the reference input voltage,
aV
ref
is defined as:
(DV )
ref
V
(T
+
25°C)
ref A
DT
A
10
6
αV
ref
ppm
+
°C
aV
ref
can be positive or negative depending on whether V
ref
Min or V
ref
Max occurs at the lower ambient temperature, refer to Figure 8.
Example:
DV
ref
= 7.2 mV and the slope is positive,
Example:
V
ref
@ 25°C = 1.241 V
Example:
DT
A
= 125°C
0.0072
ppm
+
1.241
αV
ref
°C
125
11. The dynamic impedance Z
KA
is defined as:
⏐Z
DV
KA
⏐
+
KA
DI
K
10
6
+
46 ppm
°C
When the device is operating with two external resistors, R1 and R2, (refer to Figure 4) the total dynamic impedance of the circuit is given by:
⏐Z
KA
′⏐
+
⏐Z
KA
⏐
1
)
R1
R2
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