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  ON Semiconductor Electronic Components Datasheet  

LM431SC Datasheet

Programmable Shunt Regulator

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Programmable Shunt
Regulator
LM431SA, LM431SB,
LM431SC
Description
The LM431SA / LM431SB / LM431SC are threeterminal the
output adjustable regulators with thermal stability over operating
temperature range. The output voltage can be set any value between
VREF (approximately 2.5 V) and 36 V with two external resistors.
These devices have a typical dynamic output impedance of 0.2 W.
Active output circuit provides a sharp turnon characteristic, making
these devices excellent replacement for zener diodes in many
applications.
Features
Programmable Output Voltage to 36 V
Low Dynamic Output Impedance: 0.2 W (Typical)
Sink Current Capability: 1.0 to 100 mA
Equivalent FullRange Temperature Coefficient of 50 ppm/°C
(Typical)
Temperature Compensated for Operation Over Full Rated Operating
Temperature Range
Low Output Noise Voltage
Fast Turnon Response
These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
ORDERING INFORMATION
www.onsemi.com
1
SOT89
CASE 528AH
3
12
SOT23FL
CASE 318AB
3
12
SOT23
CASE 318BM
1. Ref
2. Anode
3. Cathode
1. Cathode
2. Ref
3. Anode
M32
1. Ref
2. Cathode
3. Anode
M3
1. Cathode
2. Ref
3. Anode
Product Number
Output Voltage
Tolerance
Operating
Temperature
Top Mark(1)
Package
Shipping
LM431SACMFX
2%
25 to +85_C
43A
SOT23FL 3L
Tape and Reel
LM431SACM3X
43L
SOT23 3L
LM431SACM32X
43G
SOT23 3L
LM431SBCMLX
1%
43B
SOT89 3L
LM431SBCMFX
43B
SOT23FL 3L
LM431SBCM3X
43M
SOT23 3L
LM431SBCM32X
43H
SOT23 3L
LM431SCCMLX
0.5%
43C
SOT89 3L
LM431SCCMFX
43C
SOT23FL 3L
LM431SCCM3X
43N
SOT23 3L
LM431SCCM32X
43J
SOT23 3L
LM431SAIMFX
2%
40 to +85_C
43AI
SOT23FL 3L
LM431SBIMFX
1%
43BI
SOT23FL 3L
LM431SCIMFX
0.5%
43CI
SOT23FL 3L
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specification Brochure, BRD8011/D.
1. SOT23 and SOT23FL have basically fourcharacter marking except LM431SAIMFX. (3 letters for device code + 1 letter for date code)
SOT23FL date code is composed of 1 digit numeric or alphabetic week code adding bartype year code.
© Semiconductor Components Industries, LLC, 2018
1
March, 2021 Rev. 9
Publication Order Number:
LM431SA/D


  ON Semiconductor Electronic Components Datasheet  

LM431SC Datasheet

Programmable Shunt Regulator

No Preview Available !

Block Diagram
LM431SA, LM431SB, LM431SC
Figure 1. Block Diagram
ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise noted)
Symbol
Parameter
Value
Unit
VKA
Cathode Voltage
37
V
IKA
IREF
RθJA
Cathode current Range (Continuous)
Reference Input Current Range
Thermal Resistance JunctionAir (2, 3)
ML Suffix Package (SOT89)
MF Suffix Package (SOT23FL)
100 to +150
0.05 to +10.00
220
350
mA
mA
°C/W
PD
Power Dissipation (4, 5)
M32, M3 Suffix Package (SOT23)
ML Suffix Package (SOT89)
MF Suffix Package (SOT23FL)
400
560
mW
350
M32, M3 Suffix Package (SOT23)
310
TJ
Junction Temperature
150
°C
TOPR
Operating Temperature Range
All products except LM431SAIMFX
LM431SAIMFX, SBIMFX, SCIMFX
25 to +85
°C
40 to +85
TSTG
Storage Temperature Range
65 to +150
°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.
2. Thermal resistance test board
Size: 1.6 mm x 76.2 mm x 114.3 mm (1S0P) JEDEC Standard: JESD513, JESD517.
3. Assume no ambient airflow.
4. TJMAX = 150°C; ratings apply to ambient temperature at 25°C.
5. Power dissipation calculation: PD = (TJ TA) / RθJA.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min.
Max.
Unit
VKA
Cathode Voltage
VREF
36
V
IKA
Cathode Current
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


Part Number LM431SC
Description Programmable Shunt Regulator
Maker ON Semiconductor
PDF Download

LM431SC Datasheet PDF






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