LM431SA, LM431SB,
LM431SC
Programmable Shunt
Regulator
Description
The LM431SA / LM431SB / LM431SC are three−terminal the
output adjustable regulators with thermal stability over operating
temperature range. The output voltage can be set any value between
www.onsemi.com
V
REF
(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 turn−on characteristic, making
these devices excellent replacement for zener diodes in many
applications.
1. Ref
2. Anode
3. Cathode
1
SOT−89
CASE 528AH
Features
3
• 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)
1. Cathode
2. Ref
3. Anode
2
1
SOT−23FL
CASE 419BD
3
• Temperature Compensated for Operation Over Full Rated Operating
Temperature Range
M32
1. Ref
2. Cathode
3. Anode
M3
1. Cathode
2. Ref
2
1
• Low Output Noise Voltage
• Fast Turn−on Response
3. Anode
SOT−23
CASE 318BM
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
ORDERING INFORMATION
Output Voltage
Tolerance
Operating
Temperature
(1)
†
Top Mark
Product Number
LM431SACMFX
LM431SACM3X
LM431SACM32X
LM431SBCMLX
LM431SBCMFX
LM431SBCM3X
LM431SBCM32X
LM431SCCMLX
LM431SCCMFX
LM431SCCM3X
LM431SCCM32X
LM431SAIMFX
LM431SBIMFX
LM431SCIMFX
Package
Shipping
−25 to +85_C
Tape and Reel
2%
43A □
43L ◎
43G ◎
43B
SOT−23FL 3L
SOT−23 3L
SOT−23 3L
SOT−89 3L
SOT−23FL 3L
SOT−23 3L
SOT−23 3L
SOT−89 3L
SOT−23FL 3L
SOT−23 3L
SOT−23 3L
SOT−23FL 3L
SOT−23FL 3L
SOT−23FL 3L
1%
43B □
43M ◎
43H ◎
43C
0.5%
43C □
43N ◎
43J ◎
43AI
−40 to +85_C
2%
1%
43BI
0.5%
43CI
†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. SOT−23 and SOT−23FL have basically four−character marking except LM431SAIMFX. (3 letters for device code + 1 letter for date code)
SOT−23FL date code is composed of 1 digit numeric or alphabetic week code adding bar−type year code.
© Semiconductor Components Industries, LLC, 2018
1
Publication Order Number:
July, 2018 − Rev. 8
LM431SA/D