LM185-1.2QML www.ti.com SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 LM185-1.2QML Micropower Voltage Reference Diode Check for Samples: LM185-1.2QML FEATURES DESCRIPTION * * * * The LM185-1.2 is a micropower 2-terminal band-gap voltage regulator diodes. Operating over a 10A to 20mA current range, it features exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185-1.2 band-gap reference uses only transistors and resistors, low noise and good long term stability result. 1 2 Operating Current of 10A to 20mA 1 Maximum Dynamic Impedance (Typical) Low Temperature Coefficient Low Voltage Reference - 1.235V Careful design of the LM185-1.2 has made the device exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The extremely low power drain of the LM185-1.2 makes it useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further, the wide operating current allows it to replace older references with a tighter tolerance part. Connection Diagrams Figure 1. LCCC Package See Package Number NAJ0020A Figure 2. TO Package - Bottom View See Package Number NDU0002A 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright (c) 2005-2013, Texas Instruments Incorporated LM185-1.2QML SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 www.ti.com 1 10 2 9 3 8 4 7 5 6 NC +VREF NC NC NC NC NC V- NC NC Figure 3. CLGA Package See Package Number NAC0010A Schematic Diagram 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. 2 Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML LM185-1.2QML www.ti.com SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 Absolute Maximum Ratings (1) Reverse Current 30mA Forward Current 10mA -55C TA +125C Operating Temperature Range Maximum Junction Temperature (TJmax) (2) +150C -55C TA +150C Storage Temperature Lead Temperature (Soldering 10 Seconds) CLGA 260C TO package 300C 20LD LCCC package JA Thermal Resistance JC Package Weight (Typical) 300C TO (Still Air) 300C/W TO (500LF / Min Air Flow) 139C/W 20LD LCCC (Still Air) 100C/W 20LD LCCC (500LF / Min Air Flow) 73C/W CLGA (Still Air) 194C/W CLGA (500LF / Min Air Flow) 128C/W TO 57C/W 20LD LCCC 25C/W CLGA 23C/W TO TBD 20LD LCCC TBD CLGA 210mg ESD Tolerance (3) (1) (2) (3) 4KV Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional. For specifications and test conditions, see the Electrical Characteristics. The specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature), JA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PDmax = (TJmax - TA)/JA or the number given in the Absolute Maximum Ratings, whichever is lower. Human body model, 1.5K in series with 100pF. Quality Conformance Inspection Table 1. Mil-Std-883, Method 5005 - Group A Subgroup Description 1 Static tests at Temp C 25 2 Static tests at 125 3 Static tests at -55 4 Dynamic tests at 25 5 Dynamic tests at 125 6 Dynamic tests at -55 7 Functional tests at 25 8A Functional tests at 125 8B Functional tests at -55 9 Switching tests at 25 10 Switching tests at 125 11 Switching tests at -55 12 Settling time at 25 13 Settling time at 125 14 Settling time at -55 Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML 3 LM185-1.2QML SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 www.ti.com LM185-1.2 Electrical Characteristics DC Parameters Symbol VRef Parameter Reverse Breakdown Voltage Conditions Notes Max Units IR = 10A 1.223 1.247 V 1 IR = 20A 1.205 1.26 V 2, 3 IR = 1mA 1.223 1.247 V 1 1.205 1.26 V 2, 3 1.223 1.247 V 1 2, 3 IR = 20mA VRef / IR Reverse Breakdown Voltage Change with Current VF Forward Bias Voltage Subgroups Min 1.205 1.26 V 10A IR 1mA -1.0 1.0 mV 1 20A IR 1mA -1.5 1.5 mV 2, 3 1mA IR 20mA -10.0 10.0 mV 1 -20.0 20.0 mV 2, 3 -1.0 -0.4 V 1 IF = 2mA LM185-1.2 Electrical Characteristics DC Drift Parameters Delta calculations performed on QMLV devices at group B, subgroup 5, unless otherwise specified on the IPI. Symbol VR Min Max Units Subgroups IR = 10A -0.01 0.01 V 1 IR = 20mA -0.01 0.01 V 1 Min Max Units Subgroups IR = 10A 1.22 3 1.24 7 V 1 IR = 20A 1.20 5 1.26 V 2, 3 IR = 1mA 1.22 3 1.24 7 V 1 1.20 5 1.26 V 2, 3 1.22 3 1.24 7 V 1 1.20 5 1.26 V 2, 3 -1.0 1.0 mV 1 2, 3 Parameter Reverse Breakdown Voltage Conditions Notes LM185BY-1.2 Electrical Characteristics DC Parameters Symbol VRef Parameter Reverse Breakdown Voltage Conditions Notes IR = 20mA VRef / IR Reverse Breakdown Voltage Change with Current VF Forward Bias Voltage TC Temperature Coefficient (1) 4 10A IR 1mA 20A IR 1mA -1.5 1.5 mV 1mA IR 20mA -10.0 10.0 mV 1 -20.0 20.0 mV 2, 3 -1.0 -0.4 V 1 50 PPM/C 2, 3 IF = 2mA See (1) The average temperature coefficient is defined as the maximum deviation of reference voltage, at all measured temperatures between the operating TMin & TMax, divided by (TMax - TMin). The measured temperatures (TMeasured) are -55C, 25C, & 125C or VRef / (TMax - TMin) Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML LM185-1.2QML www.ti.com SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 Typical Performance Characteristics Reverse Characteristics Reverse Characteristics Figure 4. Figure 5. Forward Characteristics Temperature Drift of 3 Representative Units Figure 6. Figure 7. Reverse Dynamic Impedance Reverse Dynamic Impedance Figure 8. Figure 9. Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML 5 LM185-1.2QML SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Noise Voltage Filtered Output Noise Figure 10. Figure 11. Response Time Figure 12. Typical Applications Figure 13. Wide Input Range Reference Figure 14. Micropower Reference from 9V Battery 6 Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML LM185-1.2QML www.ti.com SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 Figure 15. Reference from 1.5V Battery *IQ 30A Figure 16. Micropower* 5V Regulator *IQ 20A standby current Figure 17. Micropower* 10V Reference Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML 7 LM185-1.2QML SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 www.ti.com Figure 18. Precision 1A to 1mA Current Sources METER THERMOMETERS Calibration 1. Short LM385-1.2, adjust R3 for IOUT= temp at 1A/K 2. Remove short, adjust R2 for correct reading in centigrade IQ at 1.3V500A IQ at 1.6V2.4mA Figure 19. 0C-100C Thermometer 8 Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML LM185-1.2QML www.ti.com SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 *2N3638 or 2N2907 select for inverse HFE 5 Select for operation at 1.3V IQ 600A to 900A Figure 20. Lower Power Thermometer Calibration 1. Short LM385-1.2, adjust R3 for IOUT= temp at 1.8A/K 2. Remove short, adjust R2 for correct reading in F Figure 21. 0F-50F Thermometer Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML 9 LM185-1.2QML SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 www.ti.com Calibration 1. Adjust R1 so that V1 = temp at 1mV/K 2. Adjust V2 to 273.2mV IQ for 1.3V to 1.6V battery voltage = 50A to 150A Typical supply current 50A Figure 22. Centigrade Thermometer Adjustment Procedure 1. Adjust TC ADJ pot until voltage across R1 equals Kelvin temperature multiplied by the thermocouple Seebeck coefficient. 2. Adjust zero ADJ pot until voltage across R2 equals the thermocouple Seebeck coefficient multiplied by 273.2. Figure 23. Micropower Thermocouple Cold Junction Compensator 10 Thermocouple Type Seebeck Coefficient (V/C) R1 () R2 () Voltage Across R1 @ 25C (mV) Voltage Across R2 (mV) J 52.3 523 1.24k 15.60 14.32 T 42.8 432 1k 12.77 11.78 K 40.8 412 953 12.17 11.17 S 6.4 63.4 150 1.908 1.766 Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML LM185-1.2QML www.ti.com SNVS384A - OCTOBER 2005 - REVISED MARCH 2013 REVISION HISTORY SECTION Released Revision Section 10/07/05 A New Release, Corporate format 03/27/13 A All Originator L. Lytle Changes 2 MDS data sheets converted into one Corp. data sheet format. MNLM185-1.2-X Rev 2A3 and MNLM185BY-1.2-X Rev 0B0 data sheets will be archived. Changed layout of National Data Sheet to TI format Submit Documentation Feedback Copyright (c) 2005-2013, Texas Instruments Incorporated Product Folder Links: LM185-1.2QML 11 PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish (2) MSL Peak Temp Op Temp (C) Top-Side Markings (3) (4) 5962-8759401VXA ACTIVE TO NDU 2 20 TBD Call TI Call TI -55 to 125 8759401VXA Q 5962-8759401VYA ACTIVE CFP NAC 10 54 TBD Call TI Call TI -55 to 125 LM185WG -1.2-QV Q 5962-87594 01VYA ACO 01VYA >T 5962-8759401XA ACTIVE TO NDU 2 20 TBD Call TI Call TI -55 to 125 8759401XA Q 5962-8759401YA ACTIVE CFP NAC 10 54 TBD Call TI Call TI -55 to 125 LM185WG -1.2/883 Q 5962-87594 01YA ACO 01YA >T 5962-8759405XA ACTIVE TO NDU 2 20 TBD Call TI Call TI -55 to 125 8759405XA Q LM185BYH1.2-SMD ACTIVE TO NDU 2 20 TBD Call TI Call TI -55 to 125 8759405XA Q LM185H-1.2-QV ACTIVE TO NDU 2 20 TBD Call TI Call TI -55 to 125 8759401VXA Q LM185H-1.2-SMD ACTIVE TO NDU 2 20 TBD Call TI Call TI -55 to 125 8759401XA Q LM185H-1.2/883 ACTIVE TO NDU 2 20 TBD Call TI Call TI -55 to 125 LM185-1.2 Q LM185WG-1.2-QV ACTIVE CFP NAC 10 54 TBD Call TI Call TI -55 to 125 LM185WG -1.2-QV Q 5962-87594 01VYA ACO 01VYA >T LM185WG-1.2/883 ACTIVE CFP NAC 10 54 TBD Call TI Call TI -55 to 125 LM185WG -1.2/883 Q 5962-87594 01YA ACO 01YA >T (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. Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 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) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. 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OTHER QUALIFIED VERSIONS OF LM185-1.2QML, LM185-1.2QML-SP : * Military: LM185-1.2QML * Space: LM185-1.2QML-SP NOTE: Qualified Version Definitions: * Military - QML certified for Military and Defense Applications * Space - Radiation tolerant, ceramic packaging and qualified for use in Space-based application Addendum-Page 2 MECHANICAL DATA NAC0010A WG10A (Rev H) www.ti.com MECHANICAL DATA NDU0002A H02A (Rev F) www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. 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