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LM431CCZ/NOPB

LM431CCZ/NOPB

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    TO92-3

  • 描述:

    IC VREF SHUNT -0.6%/+0.4% TO92-3

  • 详情介绍
  • 数据手册
  • 价格&库存
LM431CCZ/NOPB 数据手册
Product Folder Sample & Buy Support & Community Tools & Software Technical Documents LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 LM431 Adjustable Precision Zener Shunt Regulator 1 Features 3 Description • • The LM431 is a 3-terminal adjustable shunt regulator with ensured temperature stability over the entire temperature range of operation. The output voltage may be set at any level greater than 2.5 V (VREF) up to 36 V merely by selecting two external resistors that act as a voltage divided network. Due to the sharp turnon characteristics this device is an excellent replacement for many Zener diode applications. 1 • • • • • Average Temperature Coefficient 50 ppm/°C Temperature Compensated for Operation Over the Full Temperature Range Programmable Output Voltage Fast Turnon Response Low-Output Noise Low-Dynamic Output Impedance Available in Space-Saving SOIC-8, SOT-23, and TO-92 Packages 2 Applications • • • • • Adjustable Voltage or Current Linear and Switching Power Supplies Voltage Monitoring Current Source and Sink Circuits Circuits Requiring Precision References Zener Diode Replacements LM431 Symbol The LM431 is available in space-saving SOIC-8, SOT-23, and TO-92 packages. Device Information(1) PART NUMBER LM431 PACKAGE BODY SIZE (NOM) SOIC (8) 4.90 mm × 3.91 mm SOT-23 (3) 2.92 mm × 1.30 mm TO-92 (3) 4.30 mm × 4.30 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Functional Block Diagram 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 4 4 4 4 5 7 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Typical Characteristics .............................................. Parameter Measurement Information .................. 7 Detailed Description ............................................ 10 8.1 Overview ................................................................. 10 8.2 Functional Block Diagram ...................................... 10 8.3 Feature Description................................................. 10 8.4 Device Functional Modes........................................ 11 9 Application and Implementation ........................ 12 9.1 Application Information............................................ 12 9.2 Typical Applications ................................................ 13 10 Power Supply Recommendations ..................... 19 11 Layout................................................................... 19 11.1 Layout Guidelines ................................................. 19 11.2 Layout Example .................................................... 19 12 Device and Documentation Support ................. 20 12.1 12.2 12.3 12.4 Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 20 20 20 20 13 Mechanical, Packaging, and Orderable Information ........................................................... 20 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision G (March 2013) to Revision H • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .................................................................................................. 1 Changes from Revision F (April 2013) to Revision G • 2 Page Page Changed layout of National Data Sheet to TI format ........................................................................................................... 18 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 5 Pin Configuration and Functions D Package 8-Pin SOIC Top View DBZ Package 3-Pin SOT-23 Top View Note: NC = Not internally connected. LP Package 3-Pin TO-92 Top View Pin Functions PIN I/O DESCRIPTION NAME SOIC SOT-23 TO-92 Anode 2, 3, 6, 7 3 3 O Anode pin, normally grounded 1 1 1 I/O Shunt current/output voltage 4, 5 — — — No connect 8 2 2 I Cathode NC Reference Reference pin for adjustable output voltage Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 3 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) (2) MIN Cathode voltage MAX UNIT 37 V Reference voltage –0.5 Continuous cathode current –10 Reference input current 10 mA 0.78 W TO-92 package Internal power dissipation (3) (4) Operating temperature (2) (3) (4) mA SOIC package 0.81 W SOT-23 package 0.28 W Industrial (LM431xI) –40 85 °C 0 70 °C –65 150 °C Commercial (LM431xC) Storage temperature (1) V 150 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications. TJ Max = 150°C. Ratings apply to ambient temperature at 25°C. Above this temperature, derate the TO-92 at 6.2 mW/°C, the SOIC at 6.5 mW/°C, the SOT-23 at 2.2 mW/°C. 6.2 ESD Ratings V(ESD) (1) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) VALUE UNIT ±2500 V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN MAX Cathode voltage VREF 37 UNIT V Cathode current 1 100 mA 6.4 Thermal Information LM431 THERMAL METRIC (1) D (SOIC) DBZ (SOT-23) LP (TO-92) 8 PINS 3 PINS 3 PINS UNIT RθJA Junction-to-ambient thermal resistance 126.9 267.7 162.4 °C/W RθJC(top) Junction-to-case (top) thermal resistance 72.2 138.3 85.8 °C/W RθJB Junction-to-board thermal resistance 67.5 61 — °C/W ψJT Junction-to-top characterization parameter 21.1 21.5 29.4 °C/W ψJB Junction-to-board characterization parameter 67 60.1 141.5 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance — — — °C/W (1) 4 For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 6.5 Electrical Characteristics TA = 25°C unless otherwise specified PARAMETER VREF TEST CONDITIONS Reference voltage MIN TYP MAX VZ = VREF, II = 10 mA LM431A (Figure 6 ) 2.44 2.495 2.55 VZ = VREF, II = 10 mA LM431B (Figure 6 ) 2.47 2.495 2.52 VZ = VREF, II = 10 mA LM431C (Figure 6 ) 2.485 2.5 2.51 8 17 VZ from VREF to 10 V −1.4 −2.7 VZ from 10 V to 36 V −1 −2 UNIT V VDEV Deviation of reference input voltage overtemperature (1) VZ = VREF, II = 10 mA, TA = full range (Figure 6 ) ΔVREF/ ΔVZ Ratio of the change in reference voltage to the change in cathode voltage IZ = 10 mA (Figure 7 ) IREF Reference input current R1 = 10 kΩ, R2 = ∞, II = 10 mA (Figure 7 ) 2 4 μA ∝IREF Deviation of reference input current overtemperature R1 = 10 kΩ, R2 = ∞, II = 10 mA, TA = full range (Figure 7 ) 0.4 1.2 μA IZ(MIN) Minimum cathode current for regulation VZ = VREF(Figure 6 ) 0.4 1 mA IZ(OFF) OFF-state current VZ = 36 V, VREF = 0 V (Figure 8) 0.3 1 μA (1) mV mV/V Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference input voltage over the full temperature range. The average temperature coefficient of the reference input voltage, ∝VREF, is defined as: Where: T2 – T1 = full temperature change (0–70°C). VREF can be positive or negative depending on whether the slope is positive or negative. Example: VDEV = 8 mV, VREF = 2495 mV, T2 – T1 = 70°C, slope is positive. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 5 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com Electrical Characteristics (continued) TA = 25°C unless otherwise specified PARAMETER rZ (2) Dynamic output impedance TEST CONDITIONS (2) MIN TYP MAX VZ = VREF, LM431A, Frequency = 0 Hz (Figure 6 ) 0.75 VZ = VREF, LM431B, LM431C Frequency = 0 Hz (Figure 6 ) 0.5 UNIT Ω The dynamic output impedance, rZ, is defined as: When the device is programmed with two external resistors, R1 and R2, (see Figure 7), the dynamic output impedance of the overall circuit, rZ, is defined as: 6 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 6.6 Typical Characteristics Figure 1. Dynamic Impedance vs Frequency Note: The areas under the curves represent conditions that may cause the device to oscillate. For curves B, C, and D, R2 and V+ were adjusted to establish the initial VZ and IZ conditions with CL = 0. V+ and CL were then adjusted to determine the ranges of stability. Figure 2. Stability Boundary Conditions 7 Parameter Measurement Information Figure 3. Test Circuit for Dynamic Impedance vs Frequency Curve Figure 4. Test Circuit for Curve A Above Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 7 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com Parameter Measurement Information (continued) Figure 5. Test Circuit for Curves B, C and D Above Figure 6. Test Circuit for VZ = VREF Note: VZ = VREF (1 + R1/R2) + IREF × R1 Figure 7. Test Circuit for VZ > VREF 8 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 Parameter Measurement Information (continued) Figure 8. Test Circuit for OFF-State Current Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 9 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com 8 Detailed Description 8.1 Overview The LM431 is an adjustable precision shunt voltage regulator with ensured temperature stability over the entire temperature range. The part has three different packages available to meet small footprint requirements, and is available in three different tolerance grades. 8.2 Functional Block Diagram Figure 9. LM431 Symbol Figure 10. LM431 Block Diagram 8.3 Feature Description The LM431 is a precision Zener diode. The part requires a small quiescent current for regulation, and regulates the output voltage by shunting more or less current to ground, depending on input voltage and load. The only external component requirement is a resistor between the cathode and the input voltage to set the input current. An external capacitor can be used on the input or output, but is not required. 10 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 Feature Description (continued) Figure 11. Equivalent Circuit 8.4 Device Functional Modes The LM431 is most commonly operated in closed-loop mode, where the reference node is tied to the output voltage via a resistor divider. The output voltage remains in regulation as long as Iz is between 1 mA and 100 mA. The part can also be used in open-loop mode to act as a comparator, driving the feedback node from another voltage source. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 11 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers must validate and test their design implementation to confirm system functionality. 9.1 Application Information The LM431 is an adjustable precision shunt voltage regulator with ensured temperature stability over the entire temperature range. For space critical applications, the LM431 is available in space saving SOIC-8, SOT-23 and TO-92 packages. The minimum operating current is 1 mA while the maximum operating current is 100 mA. The typical thermal hysteresis specification is defined as the change in 25°C voltage measured after thermal cycling. The device is thermal cycled to temperature 0°C and then measured at 25°C. Next the device is thermal cycled to temperature 70°C and again measured at 25°C. The resulting VOUT delta shift between the 25°C measurements is thermal hysteresis. Thermal hysteresis is common in precision references and is induced by thermal-mechanical package stress. Changes in environmental storage temperature, operating temperature and board mounting temperature are all factors that can contribute to thermal hysteresis. In a conventional shunt regulator application (Figure 12), an external series resistor (RS) is connected between the supply voltage and the LM431 cathode pin. RS determines the current that flows through the load (ILOAD) and the LM431 (IZ). Since load current and supply voltage may vary, RS must be small enough to supply at least the minimum acceptable IZ to the LM431 even when the supply voltage is at its minimum and the load current is at its maximum value. When the supply voltage is at its maximum and ILOAD is at its minimum, RS must be large enough so that the current flowing through the LM431 is less than 100 mA. RS must be selected based on the supply voltage, (V+), the desired load and operating current, (ILOAD and IZ), and the output voltage, see Equation 1. V - VO RS = + ILOAD + IZ (1) The LM431 output voltage can be adjusted to any value in the range of 2.5 V through 37 V. It is a function of the internal reference voltage (VREF) and the ratio of the external feedback resistors as shown in Figure 12. The output voltage is found using Equation 2. VO = VREF * (1 + R1/R2) where • VO is the output voltage (also, cathode voltage, VZ). The actual value of the internal VREF is a function of VZ. (2) The corrected VREF is determined by Equation 3: VREF = ∆VZ * (∆VREF/∆VZ) + VY where • • 12 VY = 2.5 V and ∆VZ = (VZ– VY) ΔVREF/ΔVZ is found in the Electrical Characteristics and is typically −1.4 mV/V for VZ raging from VREF to 10 V and –1 mV/V for VZ raging from 10 V to 36 V. (3) Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 9.2 Typical Applications 9.2.1 Shunt Regulator Figure 12. Shunt Regulator 9.2.1.1 Design Requirements Design a shunt regulator with the following requirements: • V+ > VO • VO = 5 V Select RS (a resistor between V+ and VO) such that: 1 mA < IZ < 100 mA 9.2.1.2 Detailed Design Procedure The resistor RS must be selected such that current IZ remains in the operational region of the part for the entire V+ range and load current range. The two extremes to consider are V+ at its minimum, and the load at its maximum, where RS must be small enough for IZ to remain above 1 mA. The other extreme is V+ at its maximum, and the load at its minimum, where RS must be large enough to maintain IZ < 100 mA. If unsure, try using 1 mA ≤ IR ≤ 10 mA as a starting point; just remember the value of IZ varies with input voltage and load. Use Equation 4 and Equation 5 to set RS between RS_MIN and RS_MAX. V+ _ MAX - VO RS _ MIN = ILOAD _ MIN + IZ _ MAX RS _ MAX = (4) V+ _ MIN - VO ILOAD _ MAX + IZ _ MIN (5) Set feedback resistors R1 and R2 for a resistor divider based on Equation 2 and reproduced in Equation 6 VO = VREF * (1 + R1/R2) (6) So, for a 5-V output voltage, VO, and VREF of 2.5 V, simple calculation yields R1/R2 = 1. Based on this, select R1 = 1 kΩ and R2 = 1 kΩ. Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 13 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com Typical Applications (continued) 9.2.1.3 Application Curves Figure 14. Thermal Information Figure 13. Input Current vs VZ Figure 15. Input Current vs VZ 9.2.2 Other Applications Figure 16. Single Supply Comparator With Temperature Compensated Threshold 14 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 Typical Applications (continued) Figure 17. Series Regulator Figure 18. Output Control of a Three Terminal Fixed Regulator Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 15 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com Typical Applications (continued) Figure 19. Higher Current Shunt Regulator Figure 20. Crow Bar 16 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 Typical Applications (continued) Figure 21. Over Voltage and Under Voltage Protection Circuit Figure 22. Voltage Monitor Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 17 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com Typical Applications (continued) Figure 23. Delay Timer Figure 24. Current Limiter or Current Source Figure 25. Constant Current Sink 18 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 LM431 www.ti.com SNVS020H – MAY 2000 – REVISED JANUARY 2016 10 Power Supply Recommendations While a bypass capacitor is not required on the input voltage line, TI recommends reducing noise on the input which could affect the output. TI recommends a 0.1-µF ceramic capacitor or larger. 11 Layout 11.1 Layout Guidelines Place external components as close to the device as possible. Place RS close to the cathode, as well as the input bypass capacitor, if used. Keep feedback resistor close the device whenever possible. 11.2 Layout Example RS physically close to device cathode CIN physically close to device COUT physically close to device Figure 26. LM431 Layout Recommendation Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 19 LM431 SNVS020H – MAY 2000 – REVISED JANUARY 2016 www.ti.com 12 Device and Documentation Support 12.1 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.2 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 12.3 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 12.4 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 20 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated Product Folder Links: LM431 PACKAGE OPTION ADDENDUM www.ti.com 7-Oct-2021 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) LM431ACM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 LM431 ACM LM431ACM3/NOPB ACTIVE SOT-23 DBZ 3 1000 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 N1F LM431ACM3X NRND SOT-23 DBZ 3 3000 Non-RoHS & Green Call TI Level-1-260C-UNLIM 0 to 70 N1F LM431ACM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 N1F LM431ACMX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 LM431 ACM LM431ACZ/LFT3 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type LM431 ACZ LM431ACZ/LFT4 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type LM431 ACZ LM431ACZ/NOPB ACTIVE TO-92 LP 3 1800 RoHS & Green Call TI N / A for Pkg Type 0 to 70 LM431 ACZ LM431AIM NRND SOIC D 8 95 Non-RoHS & Green Call TI Level-1-235C-UNLIM -40 to 85 LM431 AIM LM431AIM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 LM431 AIM LM431AIM3 NRND SOT-23 DBZ 3 1000 Non-RoHS & Green Call TI Level-1-260C-UNLIM -40 to 85 N1E LM431AIM3/NOPB ACTIVE SOT-23 DBZ 3 1000 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 N1E LM431AIM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 N1E LM431AIMX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 LM431 AIM LM431AIZ/LFT1 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type LM431AIZ/NOPB ACTIVE TO-92 LP 3 1800 RoHS & Green Call TI N / A for Pkg Type -40 to 85 LM431BCM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 Addendum-Page 1 LM431 AIZ LM431 AIZ 431 BCM Samples PACKAGE OPTION ADDENDUM www.ti.com 7-Oct-2021 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) LM431BCM3 NRND SOT-23 DBZ 3 1000 Non-RoHS & Green Call TI Level-1-260C-UNLIM 0 to 70 N1D LM431BCM3/NOPB ACTIVE SOT-23 DBZ 3 1000 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 N1D LM431BCM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 N1D LM431BCMX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 431 BCM LM431BCZ/NOPB ACTIVE TO-92 LP 3 1800 RoHS & Green Call TI N / A for Pkg Type 0 to 70 LM431 BCZ LM431BIM NRND SOIC D 8 95 Non-RoHS & Green Call TI Level-1-235C-UNLIM -40 to 85 431 BIM LM431BIM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 431 BIM LM431BIM3 NRND SOT-23 DBZ 3 1000 Non-RoHS & Green Call TI Level-1-260C-UNLIM -40 to 85 N1C LM431BIM3/NOPB ACTIVE SOT-23 DBZ 3 1000 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 N1C LM431BIM3X NRND SOT-23 DBZ 3 3000 Non-RoHS & Green Call TI Level-1-260C-UNLIM -40 to 85 N1C LM431BIM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 N1C LM431BIMX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 431 BIM LM431CCM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 431 CCM LM431CCM3/NOPB ACTIVE SOT-23 DBZ 3 1000 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 N1B LM431CCM3X NRND SOT-23 DBZ 3 3000 Non-RoHS & Green Call TI Level-1-260C-UNLIM 0 to 70 N1B LM431CCM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 N1B LM431CCZ/NOPB ACTIVE TO-92 LP 3 1800 RoHS & Green Call TI N / A for Pkg Type 0 to 70 LM431 CCZ LM431CIM NRND SOIC D 8 95 Non-RoHS & Green Call TI Level-1-235C-UNLIM -40 to 85 431 CIM LM431CIM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 431 Addendum-Page 2 Samples PACKAGE OPTION ADDENDUM www.ti.com 7-Oct-2021 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) CIM LM431CIM3 NRND SOT-23 DBZ 3 1000 Non-RoHS & Green Call TI Level-1-260C-UNLIM -40 to 85 N1A LM431CIM3/NOPB ACTIVE SOT-23 DBZ 3 1000 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 N1A LM431CIM3X NRND SOT-23 DBZ 3 3000 Non-RoHS & Green Call TI Level-1-260C-UNLIM -40 to 85 N1A LM431CIM3X/NOPB ACTIVE SOT-23 DBZ 3 3000 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 N1A LM431CIZ/NOPB ACTIVE TO-92 LP 3 1800 RoHS & Green Call TI N / A for Pkg Type -40 to 85 LM431 CIZ (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
LM431CCZ/NOPB
物料型号:LM431

器件简介: LM431是一款三端可调分流调节器,具有在整个工作温度范围内确保的温度稳定性。输出电压可以通过选择两个外部电阻作为电压分压网络来设置在2.5V到36V之间的任何电平。

引脚分配: - 阳极(Anode):通常接地,有多个引脚配置选项。 - 阴极(Cathode):分流电流/输出电压引脚。 - 参考(Reference):可调输出电压的参考引脚。 - 空脚(NC):无内部连接。

参数特性: - 工作温度范围:工业级(-40°C to 85°C),商业级(0°C to 70°C)。 - 存储温度范围:-65°C to 150°C。 - 参考电压(VREF):2.44V to 2.55V。 - 参考输入电流(IREF):2uA to 4uA。

功能详解: LM431可以作为齐纳二极管的替代品,具有快速的启动响应、低输出噪声和低动态输出阻抗。它可以用于可调电压或电流的线性和开关电源、电压监测、电流源和汇电路、需要精密参考的电路等。

应用信息: LM431可用于多种应用,包括但不限于分流调节器、电压监测、电流源/汇电路、齐纳二极管替换等。

封装信息: LM431提供多种封装选项,包括节省空间的SOIC-8、SOT-23和TO-92封装。
LM431CCZ/NOPB 价格&库存

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