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LM431SCCMLX

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LM431SCCMLX

For Reference Only

Part Number LM431SCCMLX
Manufacturer Fairchild/ON Semiconductor
Description IC VREF SHUNT ADJ SOT89-3
Datasheet LM431SCCMLX Datasheet
Package TO-243AA
In Stock 9,124 piece(s)
Unit Price $ 0.1640 *
Lead Time Can Ship Immediately
Estimated Delivery Time Nov 2 - Nov 7 (Choose Expedited Shipping)
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Part Number # LM431SCCMLX (PMIC - Voltage Reference) is manufactured by Fairchild/ON Semiconductor and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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LM431SCCMLX Specifications

ManufacturerFairchild/ON Semiconductor
CategoryIntegrated Circuits (ICs) - PMIC - Voltage Reference
Datasheet LM431SCCMLXDatasheet
PackageTO-243AA
Series-
Reference TypeShunt
Output TypeAdjustable
Voltage - Output (Min/Fixed)2.495V
Voltage - Output (Max)36V
Current - Output100mA
Tolerance±0.5%
Temperature Coefficient50ppm/°C Typical
Noise - 0.1Hz to 10Hz-
Noise - 10Hz to 10kHz-
Voltage - Input-
Current - Supply-
Current - Cathode1mA
Operating Temperature-25°C ~ 85°C (TA)
Mounting TypeSurface Mount
Package / CaseTO-243AA
Supplier Device PackageSOT-89-3

LM431SCCMLX Datasheet

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To learn more about ON Semiconductor, please visit our website at www.onsemi.com Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor product management systems do not have the ability to manage part nomenclature that utilizes an underscore (_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please email any questions regarding the system integration to Fairchild_questions@onsemi.com. Is Now Part of ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor 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. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

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L M 431S A / L M 431S B / L M 431S C — P ro g ram m ab le S h u n t R eg u lato r © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431SA / LM431SB / LM431SC Rev. 6.11 June 2015 LM431SA / LM431SB / LM431SC Programmable Shunt Regulator Features • Programmable Output Voltage to 36 V • Low Dynamic Output Impedance: 0.2 Ω (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 Ordering Information Note: 1. SOT-23 and SOT-23F have basically four-character marking except LM431SAIMFX. (3 letters for device code + 1 letter for date code) SOT-23F date code is composed of 1 digit numeric or alphabetic week code adding bar-type year code. > Week code: Change in every two weeks > Year code (additional bar): Rotate in three year cycle Product Number Output Voltage Tolerance Operating Temperature Top Mark(1) Package Packing Method LM431SACMFX 2% -25 to +85°C 43A □ SOT-23F 3L Tape and Reel LM431SACM3X 43L◎ SOT-23 3L LM431SACM32X 43G◎ SOT-23 3L LM431SBCMLX 1% 43B SOT-89 3L LM431SBCMFX 43B □ SOT-23F 3L LM431SBCM3X 43M◎ SOT-23 3L LM431SBCM32X 43H◎ SOT-23 3L LM431SCCMLX 0.5% 43C SOT-89 3L LM431SCCMFX 43C □ SOT-23F 3L LM431SCCM3X 43N◎ SOT-23 3L LM431SCCM32X 43J◎ SOT-23 3L LM431SAIMFX 2% -40 to +85°C 43AI SOT-23F 3L 1. Ref 2. Anode 3. Cathode 1 SOT-89 SOT-23F 1 2 3 1. Cathode 2. Ref 3. Anode SOT-23 1 2 3 M32 - 1. Ref 2. Cathode 3. Anode M3 - 1. Cathode 2. Ref 3. Anode Week Code Week Code 01~02 03~04 05~06 07~08 09~10 11~12 13~14 15~16 17~18 19~20 21~22 23~24 25~26 1 2 3 4 5 6 7 8 9 A D E F 27~28 29~30 31~32 33~34 35~36 37~38 39~40 41~42 43~44 45~46 47~48 49~50 51~52 H J K L N O P R S T U V X Year Code 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 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 Ω. Active output circuit provides a sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications.

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L M 431S A / L M 431S B / L M 431S C — P ro g ram m ab le S h u n t R eg u lato r © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431SA / LM431SB / LM431SC Rev. 6.11 2 Block Diagram Figure 1. Block Diagram Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted. Notes: 2. Thermal resistance test board Size: 1.6 mm x 76.2 mm x 114.3 mm (1S0P) JEDEC Standard: JESD51-3, JESD51-7. 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 The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Value Unit VKA Cathode Voltage 37 V IKA Cathode current Range (Continuous) -100 to +150 mA IREF Reference Input Current Range -0.05 to +10.00 mA RθJA Thermal Resistance Junction-Air (2,3) ML Suffix Package (SOT-89) 220 °C/WMF Suffix Package (SOT-23F) 350 M32, M3 Suffix Package (SOT-23) 400 PD Power Dissipation (4,5) ML Suffix Package (SOT-89) 560 mWMF Suffix Package (SOT-23F) 350 M32, M3 Suffix Package (SOT-23) 310 TJ Junction Temperature 150 °C TOPR Operating Temperature Range All products except LM431SAIMFX -25 to +85 °C LM431SAIMFX -40 to +85 TSTG Storage Temperature Range -65 to +150 °C Symbol Parameter Min. Max. Unit VKA Cathode Voltage VREF 36 V IKA Cathode Current 1 100 mA + -

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L M 431S A / L M 431S B / L M 431S C — P ro g ram m ab le S h u n t R eg u lato r © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431SA / LM431SB / LM431SC Rev. 6.11 3 Electrical Characteristics(6) Values are at TA = 25°C unless otherwise noted. Note: 6. TMIN = -25°C, TMAX = +85°C. Symbol Parameter Conditions LM431SA LM431SB LM431SC Unit Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. VREF Reference Input Voltage VKA = VREF, IKA = 10 mA 2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508 V ΔVREF / ΔT Deviation of Reference Input Voltage Over- Temperature VKA = VREF, IKA = 10 mA TMIN ≤ TA ≤ TMAX SOT-89 SOT-23F 4.5 17.0 4.5 17.0 4.5 17.0 mV SOT-23 6.6 24 6.6 24 6.6 24 mV ΔVREF / ΔVKA Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage IKA =10 mA ΔVKA = 10 V-VREF -1.0 -2.7 -1.0 -2.7 -1.0 -2.7 mV/V ΔVKA = 36 V-10 V -0.5 -2.0 -0.5 -2.0 -0.5 -2.0 IREF Reference Input Current IKA = 10 mA, R1 = 10 KΩ, R2 = ∞ 1.5 4.0 1.5 4.0 1.5 4.0 μA ΔIREF / ΔT Deviation of Reference Input Current Over Full Temperature Range IKA = 10 mA, R1 = 10 KΩ, R2 = ∞, TA = Full Range SOT-89 SOT-23F 0.4 1.2 0.4 1.2 0.4 1.2 μA SOT-23 0.8 2.0 0.8 2.0 0.8 2.0 μA IKA(MIN) Minimum Cathode Current for Regulation VKA = VREF 0.45 1.00 0.45 1.00 0.45 1.00 mA IKA(OFF) Off -Stage Cathode Current VKA = 36 V, VREF = 0 0.05 1.00 0.05 1.00 0.05 1.00 μA ZKA Dynamic Impedance VKA = VREF, IKA = 1 to 100 mA, f ≥ 1.0 kHz 0.15 0.50 0.15 0.50 0.15 0.50 Ω

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L M 431S A / L M 431S B / L M 431S C — P ro g ram m ab le S h u n t R eg u lato r © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431SA / LM431SB / LM431SC Rev. 6.11 4 Electrical Characteristics(7, 8) (Continued) Values are at TA = 25°C unless otherwise noted. Notes: 7. TMIN = -40°C, TMAX = +85°C. 8. The deviation parameters VREF(dev) and IREF(dev)are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average full-range temperature coefficient of the reference input voltage, αVREF, is defined as: where TMAX -TMIN is the rated operating free-air temperature range of the device. αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the lower temperature. Example: VREF(dev) = 4.5 mV, VREF = 2500 mV at 25 °C, TMAX -TMIN = 125 °C for LM431SAI. Because minimum VREF occurs at the lower temperature, the coefficient is positive. Symbol Parameter Conditions LM431SAI Unit Min. Typ. Max. VREF Reference Input Voltage VKA = VREF, IKA = 10 mA 2.450 2.500 2.550 V VREF(dev) Deviation of Reference Input Voltage Over- Temperature VKA = VREF, IKA = 10 mA, TMIN ≤ TA ≤ TMAX 5 20 mV ΔVREF/ΔVKA Ratio of Change in Reference Input Voltage to Change in Cathode Voltage IKA = 10 mA ΔVKA = 10 V - VREF -1.0 -2.7 mV/V ΔVKA = 36 V - 10 V -0.5 -2.0 IREF Reference Input Current IKA = 10 mA, R1 =10 KΩ, R2 = ∞ 1.5 4.0 μA IREF(dev) Deviation of Reference Input Current Over Full Temperature Range IKA = 10 mA, R1 = 10 KΩ, R2 = ∞, TMIN ≤ TA ≤ TMAX 0.8 2.0 μA IKA(MIN) Minimum Cathode Current for Regulation VKA = VREF 0.45 1.00 mA IKA(OFF) Off -Stage Cathode Current VKA = 36 V, VREF = 0 0.05 1.00 μA ZKA Dynamic Impedance VKA = VREF, IKA = 1 to 100 mA, f ≥ 1.0 kHz 0.15 0.50 Ω αVREF ppm °C ------------    VREF dev( ) VREF at25°C( ) ---------------------------------------    106⋅ TMAX TMIN– -----------------------------------------------------------= αVREF 4.5mV 2500mV -----------------------    106⋅ 125°C -------------------------------------------- 14.4ppm °C⁄= = VREF(min) VREF(max) TMAX -TMIN VREF(dev)

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L M 431S A / L M 431S B / L M 431S C — P ro g ram m ab le S h u n t R eg u lato r © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431SA / LM431SB / LM431SC Rev. 6.11 5 Test Circuits Figure 2. Test Circuit for VKA = VREF Figure 3. Test Circuit for VKA ≥ VREF Figure 4. Test Circuit for lKA(OFF) LM431S LM431S LM431S

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L M 431S A / L M 431S B / L M 431S C — P ro g ram m ab le S h u n t R eg u lato r © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431SA / LM431SB / LM431SC Rev. 6.11 6 Typical Applications Figure 5. Shunt Regulator Figure 6. Output Control for Three- Terminal Fixed Regulator Figure 7. High Current Shunt Regulator Figure 8. Current Limit or Current Source Figure 9. Constant-Current Sink VO 1 R1 R2 ------+   Vref= LM431S VO Vref 1 R1 R2 ------+   = LM431S LM7805/MC7805 VO 1 R1 R2 ------+   Vref= LM431S LM431S LM431S

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L M 431S A / L M 431S B / L M 431S C — P ro g ram m ab le S h u n t R eg u lato r © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431SA / LM431SB / LM431SC Rev. 6.11 7 Typical Performance Characteristics Figure 10. Cathode Current vs. Cathode Voltage Figure 11. Cathode Current vs. Cathode Voltage Figure 12. OFF-State Cathode Current vs. Ambient Temperature Figure 13. Reference Input Current vs. Ambient Temperature Figure 14. Frequency vs. Small Signal Voltage Amplification Figure 15. Pulse Response -2 -1 0 1 2 3 -100 -50 0 50 100 150 V KA = V REF T A = 25 o C I K , C a th od e C u rr en t ( m A ) V KA , Cathode Voltage (V) I K - C at h o d e C u rr en t (m A ) VKA - Cathode Voltage (V) -1 0 1 2 3 -200 0 200 400 600 800 I KA(MIN) VKA = VREF TA = 25 o C I K A , C A T H O D E C U R R E N T ( u A ) VKA, CATHODE VOLTAGE (V) I K A - C at h o d e C u rr en t (μ A ) VKA - Cathode Voltage (V) -50 -25 0 25 50 75 100 125 150 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 I o ff , O ff- S ta te C at ho de C ur re nt ( uA ) T A , Ambient Temperature ( o C) I o ff - O ff -S ta te C a th o d e C u rr en t (μ A ) TA - bient Tempe ature ( oC) -50 -25 0 25 50 75 100 125 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 I re f, R e fe re nc e In pu t C u rr e nt ( u A ) T A , Ambient Temperature (oC)TA - Ambient Temperat ( oC) I r ef - R ef e re n ce I n p u t C u rr en t (μ A ) 1k 10k 100k 1M 10M -10 0 10 20 30 40 50 60 TA = 25 o C IKA = 10mA O p en L o op V o lta ge G ai n (d B ) Frequency (Hz) O p en L o o p V o lt ag e G ai n ( d B ) Frequency (Hz) 0 4 8 12 16 20 0 1 2 3 4 5 6 TA=25 o C OUTPUT INPUT V o lta ge S w in g (V ) Time (us)Time (μs) V o lt a g e S w in g ( V )

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L M 431S A / L M 431S B / L M 431S C — P ro g ram m ab le S h u n t R eg u lato r © 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431SA / LM431SB / LM431SC Rev. 6.11 8 Typical Performance Characteristics (Continued) Figure 16. Stability Boundary Conditions Figure 17. Anode-Reference Diode Curve Figure 18. Reference-Cathode Diode Curve Figure 19. Reference Input Voltage vs. Ambient Temperature 100p 1n 10n 100n 1? 10? 0 20 40 60 80 100 120 140 B A A V KA = Vref B VKA = 5.0 V @ IK = 10mA TA = 25 o C I K , C A T H O D E C U R R E N T (m A ) C L , LOAD CAPACITANCE I K - C at h o d e C u rr en t (m A ) CL - Load Capacitance 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 1 2 3 4 5 C ur re nt (m A ) Anode-Ref. Voltage(V) C u rr en t (m A ) - f. lt (V) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 1 2 3 4 5 C ur re nt (m A ) Ref.-Cathode Voltage(V)ef.- at lt ( ) C u rr e n t (m A ) -50 -25 0 25 50 75 100 125 2.46 2.47 2.48 2.49 2.50 2.51 V R E F , R ef er en ce In p u t V o lt ag e (V ) T A , Ambient Temperature (oC)

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To be honest, I think you are doing an outstanding job.

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