LM431SACMF Fairchild Semiconductor, LM431SACMF Datasheet

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LM431SACMF

Manufacturer Part Number
LM431SACMF
Description
Programmable Shunt Regulator
Manufacturer
Fairchild Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM431SACMFX
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Features
• Programmable Output Voltage to 36 Volts
• Low Dynamic Output Impedance 0.20 Typical
• Sink Current Capability of 1.0 to 100mA
• Equivalent Full-Range Temperature Coefficient of
• Temperature Compensated for Operation Over Full Rated
• Low Output Noise Voltage
• Fast Turn-on Response
Internal Block Diagram
©2002 Fairchild Semiconductor Corporation
LM431SA/LM431SB/LM431SC
Programmable Shunt Regulator
50ppm/ C Typical
Operating Temperature Range
Description
The LM431SA/LM431SB/LM431SC are three terminal
output adjustable regulators with thermal stability over
operating temperature range. The output voltage can be set
any value between V
volts with two external resistors. These devices have a
typical dynamic output impedance of 0.2
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. Cathode 2. Ref 3. Anode
SOT-89
SOT-23F
1
1
3
2
REF
(approximately 2.5 volts) and 36
www.fairchildsemi.com
Active output
Rev. 1.0.3

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LM431SACMF Summary of contents

Page 1

... Temperature Compensated for Operation Over Full Rated Operating Temperature Range • Low Output Noise Voltage • Fast Turn-on Response Internal Block Diagram ©2002 Fairchild Semiconductor Corporation www.fairchildsemi.com Description The LM431SA/LM431SB/LM431SC are three terminal output adjustable regulators with thermal stability over operating temperature range ...

Page 2

LM431SA/LM431SB/LM431SC Absolute Maximum Ratings (Operating temperature range applies unless otherwise specified.) Parameter Cathode Voltage Cathode current Range (Continuous) Reference Input Current Range Thermal Resistance Junction-Air (Note1,2) MF Suffix Package ML Suffix Package Power Dissipation (Note3,4) MF Suffix Package ML Suffix ...

Page 3

Electrical Characteristics (T = +25 C, unless otherwise specified) A Parameter Symbol Conditions Reference REF KA REF Input Voltage Deviation of Reference Input Voltage REF KA REF Over MIN A ...

Page 4

LM431SA/LM431SB/LM431SC Test Circuits LM431S Figure 1. Test Circuit for V LM431S Figure 3. Test Circuit for l 4 Figure 2. Test Circuit for REF KA(OFF) LM431S V KA REF ...

Page 5

Typical Performance Characteristics 150 REF 100 50 0 -50 -100 - Cathode Voltage (V) KA Figure 4. Cathode Current vs. Cathode Voltage 0.100 0.075 0.050 ...

Page 6

LM431SA/LM431SB/LM431SC Typical Performance Characteristics 140 120 A 100 100p 1n 10n 100n C , LOAD CAPACITANCE L Figure 10. Stability Boundary Conditions 0.0 0.2 0.4 0.6 0.8 1.0 ...

Page 7

Typical Application ------ - O ref R 2 LM431S . Figure 13 Shunt Regulator LM431S Figure 16. Current Limit or Current Source ------ - O ref ...

Page 8

LM431SA/LM431SB/LM431SC Mechanical Dimensions Package Marking 43A 2% tolerance 8 Dimensions in millimeters SOT-23F 43B 1% tolerance 43C 0.5% tolerance ...

Page 9

Mechanical Dimensions Package 4.50 0.20 1.65 0.10 0.50 0.10 1.50 TYP 1.50 TYP Marking 43A 2% tolerance (Continued) Dimensions in millimeters SOT-89 C0.2 0.40 0.10 0.40 43B 1% tolerance LM431SA/LM431SB/LM431SC 1.50 0.20 (0.40) +0.10 –0.05 43C 0.5% tolerance 9 ...

Page 10

... LM431SCCML LM431SCCMF LM431SBCML LM431SBCMF LM431SACML LM431SACMF DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS ...

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