KA431SMFTF [ONSEMI]
可调式/2.5V、2%容差分流稳压器;
| 型号： | KA431SMFTF |
| 厂家： | 
ONSEMI |
| 描述： | 可调式/2.5V、2%容差分流稳压器 光电二极管 输出元件 稳压器 |
| 文件： | 总8页 (文件大小：215K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DATA SHEET
www.onsemi.com
Programmable Shunt
Regulator
3
MF
1. Cathode
2. Ref
MF2
1. Ref
2. Cathode
3. Anode
2
1
3. Anode
KA431S, KA431SA,
KA431SL
SOT23−FL3L
CASE 318AB
DEVICE MARKING INFORMATION
Description
The KA431S / KA431SA / KA431SL are three−terminal adjustable
regulator series with a guaranteed thermal stability over the operating
temperature range. The output voltage can be set to any value between
See general marking information in the device
marking section on page 2 of this data sheet.
V
(approximately 2.5 V) and 36 V with two external resistors.
REF
ORDERING INFORMATION
These devices have a typical dynamic output impedance of 0.2 W.
Active output circuitry provides a sharp turn−on characteristic,
making these devices excellent replacement for zener diodes in many
applications.
See detailed ordering and shipping information on
page 6 of this data sheet.
Features
• Programmable Output Voltage to 36 V
• Low Dynamic Output Impedance 0.2 W (Typical)
• Sink Current Capability: 1.0 to 100 mA
• Equivalent Full−Range Temperature Coefficient of 50 ppm/°C
(Typical)
• Temperature Compensated for Operation Over Full Rated Operating
Temperature Range
• Low Output Noise Voltage
• Fast Turn−on Response
• These Devices are Pb−Free and Halogen Free
CATHODE
REFERENCE
+
−
2.5 Vref
ANODE
CATHODE (K)
REFERENCE (R)
ANODE(A)
Figure 1. Block Diagram
© Semiconductor Components Industries, LLC, 2002
1
Publication Order Number:
May, 2022 − Rev. 8
KA431SL/D
KA431S, KA431SA, KA431SL
MARKING INFORMATION
MF −
43A
43C
43B
1% tolerance
43E
0.5% tolerance
2% tolerance
43D
43F
MF2 −
1% tolerance
0.5% tolerance
2% tolerance
Figure 2. Top Mark (per package)
ABSOLUTE MAXIMUM RATINGS
T = 25°C unless otherwise noted
A
Symbol
Parameter
Value
Unit
V
V
Cathode Voltage
37
KA
KA
I
Cathode Current Range (Continuous)
Reference Input Current Range
−100 ~ +150
−0.05 ~ +10
350
mA
mA
°C/W
I
REF
R
Thermal Resistance Junction−Air (Note 1) (Note 2)
θ
JA
MF Suffix Package
I
Power Dissipation (Note 3) (Note 4)
MF Suffix Package
350
mW
REF
T
Junction Temperature
150
_C
_C
_C
J
T
Operating Temperature Range
Storage Temperature Range
−25 ~ +85
−65 ~ +150
OPR
T
STG
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.
1. Thermal resistance test board:
Size: 1.6 mm x 76.2 mm x 114.3 mm (1S0P))
JEDEC Standard: JESD51−3, JESD51−7
2. Assume no ambient airflow.
3. T
= 150°C; Ratings apply to ambient temperature at 25°C.
JMAX
4. Power dissipation calculation: P = (T − T ) / R .
θ
JA
D
J
A
RECOMMENDED OPERATING RANGES
Symbol
Parameter
Min.
Max.
36
Unit
V
VKA
IKA
Cathode Voltage
Cathode Current
V
REF
1
100
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.
www.onsemi.com
2
KA431S, KA431SA, KA431SL
ELECTRICAL CHARACTERISTICS (Note 5)
Values are at T = 25°C unless otherwise noted
A
KA431S
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
, I = 10 mA 2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508
REF KA
KA431SA
KA431SL
Symbol
Parameter
Conditions
= V
Unit
V
REF
Reference Input
Voltage
V
KA
V
ΔV /ΔT
REF
Deviation of Ref-
erence Input
Voltage Over−
Temperature
V
KA
= V
MIN
, I = 10 mA,
−
4.5
17.0
−
4.5
17.0
−
4.5
17.0
mV
REF KA
T
≤ T ≤ T
A MAX
ΔV
/ΔV
Ratio of Change
in Reference
I
=
ΔV =
KA
−
−
−1.0 −2.7
−0.5 −2.0
−
−
−1.0 −2.7
−0.5 −2.0
−
−
−1.0 −2.7 mV/V
−0.5 −2.0
REF
KA
KA
10 mA
10 V − V
REF
Input Voltage
ΔV
=
KA
to the Change in
Cathode Voltage
36 V − 10 V
= 10 mA,
KA
I
Reference Input
Current
I
−
−
1.5
0.4
4.0
1.2
−
−
1.5
0.4
4.0
1.2
−
−
1.5
0.4
4.0
1.2
mA
mA
REF
R1 = 10 kW, R2 = ∞
ΔI
/ΔT
REF
Deviation of
Reference Input
Current Over Full
Temperature
Range
I
KA
= 10 mA,
R1 = 10 kW, R2 = ∞
T = Full Range
A
I
)
Minimum
Cathode Current
for Regulation
V
KA
= V
REF
−
0.45 1.00
−
0.45 1.00
−
0.45 1.00
mA
KA(MIN
I
Off-Stage
V
= 36 V, V = 0
REF
−
−
0.05 1.00
0.15 0.50
−
−
0.05 1.00
0.15 0.50
−
−
0.05 1.00
0.15 0.50
mA
KA(OFF)
KA
Cathode Current
Z
KA
Dynamic
Impedance
V
= V
,
W
KA
REF
I
= 1 to 100 mA,
KA
f ≥ 1.0 kHz
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
5. T
= −25°C, T
= +85°C
MIN
MAX
TEST CIRCUITS
V
KA
V
KA
INPUT
INPUT
I
KA
I
KA
I
R1
R2
REF
KA431S
KA431S
V
REF
V
REF
V
KA
= V
(1 + R1/R2) + I
R1
REF
REF
Figure 3. Test Circuit for VKA = VREF
Figure 4. Test Circuit for VKA . VREF
V
INPUT
KA
I
KA(OFF)
KA431S
Figure 5. Test Circuit for IKA(OFF)
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3
KA431S, KA431SA, KA431SL
TYPICAL APPLICATIONS
R1
+ ǒ1 ) Ǔ
R2
R1
+ ǒ1 ) Ǔ
R2
VO
Vref
VO
Vref
V
I
V
O
V
I
IN
V
KA70805 OUT
COMMON
O
R1
R2
V
REF
R1
KA431S
R2
KA431S
Figure 6. Shunt Regulator
Figure 7. Output Control for Three−Terminal Fixed
Regulator
VREF
RCL
R1
R2
+ ǒ1 ) ǓV
IO +
VO
ref
R
I
O
CL
V
I
V
O
V
I
R1
KA431S
R2
KA431S
Figure 9. Current limit or Current Source
Figure 8. High Current Shunt Regulator
VREF
RS
IO
+
V
I
I
O
R
KA431S
S
Figure 10. Constant−Current Sink
www.onsemi.com
4
KA431S, KA431SA, KA431SL
TYPICAL CHARACTERISTICS
800
150
100
50
V
= V
REF
KA
V
KA
= V
REF
T = 25°C
A
T = 25°C
A
600
400
200
0
I
KA(MIN)
0
−50
−200
−100
−1
0
1
2
3
−1
0
1
2
3
−2
V
KA
− Cathode Voltage (V)
V
KA
− Cathode Voltage (V)
Figure 11. Cathode Current vs. Cathode Voltage
Figure 12. Cathode Current vs. Cathode Voltage
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
125
−25
0
25
50
75
100
−50
−50
−25
0
25
50
75
100
125 150
T
A
− Ambient Temperature (5C)
T
A
− Ambient Temperature (5C)
Figure 13. OFF−State Cathode Current vs.
Figure 14. Reference Input Current vs. Ambient
Temperature
Ambient Temperature
6
60
50
40
30
20
10
0
T = 25°C
A
T = 25°C
KA
A
I
= 10 mA
5
INPUT
4
3
2
1
0
OUTPUT
−10
4
8
12
16
20
0
1k
10k
100k
1M
10M
Frequency (Hz)
Time (ms)
Figure 15. Frequency vs. Small Signal
Voltage Amplification
Figure 16. Pulse Response
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5
KA431S, KA431SA, KA431SL
TYPICAL CHARACTERISTICS (Continued)
140
120
100
80
5
A: V = V
KA
ref
B: V = 5.0 V
KA
4
3
2
1
0
@ I = 10 mA
A
K
T = 25°C
A
60
40
B
20
0
1m
100n
− Load Capacitance
10m
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Anode−Reference Voltage (V)
10p
1n
10n
C
L
Figure 18. Anode−Reference Diode Curve
Figure 17. Stability Boundary Conditions
2.51
2.50
2.49
2.48
2.47
2.46
5
4
3
2
1
0
1.8
−25
0
25
50
75
100
125
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
2.0
−50
Reference−Cathode Voltage (V)
T
A
, Ambient Temperature (5C)
Figure 20. Reference Input Voltage vs. Ambient
Temperature
Figure 19. Reference−Cathode Diode Curve
ORDERING INFORMATION
Output Voltage
Tolerance
Operating
Temperature Range
†
Part Number
KA431SMFTF
Top Mark
Package
Shipping
2%
−25 to +85°C
43A
43D
43B
43E
43C
43F
SOT23−FL3L
(Pb−Free)
3000 / Tape and Reel
KA431SMF2TF
KA431SAMFTF
KA431SAMF2TF
KA431SLMFTF
KA431SLMF2TF
1%
0.5%
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
www.onsemi.com
6
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
SOT23−3L
CASE 318AB
ISSUE A
DATE 14 DEC 2021
GENERIC
MARKING DIAGRAM*
XXXM
*This information is generic. Please refer to
device data sheet for actual part marking.
Pb−Free indicator, “G” or microdot “G”, may
or may not be present. Some products may
not follow the Generic Marking.
1
XXX = Specific Device Code
M
= Date Code
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
DOCUMENT NUMBER:
DESCRIPTION:
98AON27911H
SOT23−3L
PAGE 1 OF 1
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are trademarks of Semiconductor Components Industries, LLC dba onsemi or its subsidiaries in the United States and/or other countries. onsemi reserves
the right to make changes without further notice to any products herein. onsemi makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does onsemi assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation
special, consequential or incidental damages. onsemi does not convey any license under its patent rights nor the rights of others.
© Semiconductor Components Industries, LLC, 2018
www.onsemi.com
onsemi,
, and other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates
and/or subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property.
A listing of onsemi’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. onsemi reserves the right to make changes at any time to any
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information, product features, availability, functionality, or suitability of its products for any particular purpose, nor does onsemi assume any liability arising out of the application or use
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and applications using onsemi products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information
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