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
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 turn−on 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 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, Halogen Free/BFR Free and are RoHS
Compliant
www.onsemi.com
1
SOT−89
CASE 528AH
3
12
SOT−23FL
CASE 419BD
3
12
SOT−23
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
ORDERING INFORMATION
Product Number
Output Voltage
Tolerance
Operating
Temperature
Top Mark(1)
Package
Shipping†
LM431SACMFX
2%
−25 to +85_C
43A □
SOT−23FL 3L
Tape and Reel
LM431SACM3X
43L ◎
SOT−23 3L
LM431SACM32X
43G ◎
SOT−23 3L
LM431SBCMLX
1%
43B
SOT−89 3L
LM431SBCMFX
43B □
SOT−23FL 3L
LM431SBCM3X
43M ◎
SOT−23 3L
LM431SBCM32X
LM431SCCMLX
0.5%
43H ◎
43C
SOT−23 3L
SOT−89 3L
LM431SCCMFX
43C □
SOT−23FL 3L
LM431SCCM3X
LM431SCCM32X
LM431SAIMFX
43N ◎
SOT−23 3L
43J ◎
SOT−23 3L
2%
−40 to +85_C
43AI
SOT−23FL 3L
LM431SBIMFX
1%
43BI
SOT−23FL 3L
LM431SCIMFX
0.5%
43CI
SOT−23FL 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. 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
July, 2018 − Rev. 8
Publication Order Number:
LM431SA/D