1
2
3
4
5
10
9
8
7
6
+VREF
N/C
N/C
ADJ
N/C
N/C
N/C
N/C
N/C
V-
LM185QML
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SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
LM185QML Adjustable Micropower Voltage References
Check for Samples: LM185QML
1FEATURES DESCRIPTION
The LM185 are micropower 3-terminal adjustable
2• Adjustable from 1.24V to 5.30V band-gap voltage reference diodes. Operating from
• Operating Current of 10μA to 20mA 1.24 to 5.3V and over a 10μA to 20mA current range,
• 1ΩDynamic Impedance they feature exceptionally low dynamic impedance
and good temperature stability. On-chip trimming is
• Low Temperature Coefficient used to provide tight voltage tolerance. Since the
LM185 band-gap reference uses only transistors and
resistors, low noise and good long-term stability
result.
Careful design of the LM185 has made the device
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 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. PFM Metal Can Package (Bottom View) Figure 2. 20-Leadless Chip Carrier (Top View)
See Package Number NDV0003H See Package Number NAJ0020A
Figure 3. 10-Lead CLGA (Top View)
See Package Number NAC0010A
1Please 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.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Copyright © 2005–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
LM185QML
SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
www.ti.com
Block Diagram
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.
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SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
Absolute Maximum Ratings(1)
Reverse Current 30mA
Forward Current 10mA
Operating Temperature Range −55°C ≤TA≤125°C
Storage Temperature −55°C ≤TA≤150°C
Maximum Junction Temperature TJmax 150°C
Lead Temperature (soldering, 10 seconds) 300°C
Thermal Resistance θJA LCCC Package (Still Air) 100°C/W
LCCC Package (500LF/Min Air 73°C/W
flow)
Metal Can Package (Still Air) 300°C/W
Metal Can Package (500LF/Min 139°C/W
Air flow)
CLGA Package (Still Air) 194°C/W
CLGA Package (500LF/Min Air 128°C/W
flow)
θJC LCCC Package 25°C/W
Metal Can Package 57°C/W
CLGA Package 23°C/W
Package Weight (Typical) LCCC Package TBD
Metal Can Package TBD
CLGA Package 210mg
ESD Tolerance(2) 500V
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
(2) Human body model, 1.5 kΩin series with 100 pF.
Table 1. Quality Conformance Inspection
Mil-Std-883, Method 5005 - Group A
Subgroup Description Temp °C
1 Static tests at 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
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SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
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LM185B Electrical Characteristics DC Parameters Sub-
Symbol Parameter Conditions Notes Min Max Unit groups
VRef Reference Voltage IR= 100µA 1.228 1.252 V 1
1.215 1.255 V 2, 3
IR= 9µA 1.228 1.252 V 1
IR= 10µA 1.215 1.255 V 2, 3
IR= 1mA 1.228 1.252 V 1
1.215 1.255 V 2, 3
IR= 20mA 1.228 1.252 V 1
1.215 1.255 V 2, 3
VR= 5.3V, IR= 100µA 1.228 1.252 V 1
1.215 1.255 V 2, 3
VR= 5.3V, IR= 45µA 1.288 1.252 V 1
VR= 5.3V, IR= 50µA 1.215 1.255 V 2, 3
VR= 5.3V, IR= 1.0mA 1.288 1.252 V 1
1.215 1.255 V 2, 3
VR= 5.3V, IR= 20mA 1.288 1.252 V 1
1.215 1.255 V 2, 3
ΔVRef/ΔIRReference Voltage 9µA ≤IR≤1mA 1.0 mV 1
Change with Current 10µA ≤IR≤1mA 1.5 mV 2, 3
1mA ≤IR≤20mA 10 mV 1
20 mV 2, 3
VR= 5.3V, 45µA ≤IR≤1mA 1.0 mV 1
VR= 5.3V, 50µA ≤IR≤1mA 1.5 mV 2, 3
VR= 5.3V, 1mA ≤IR≤20mA 10 mV 1
20 mV 2, 3
ΔVRef / Reference Voltage VR= 5.3V, IR= 100µA 3.0 mV 1
ΔVOChange with Output 6.0 mV 2, 3
Voltage
IFFeedback Current IR= 9µA 20 nA 1
IR= 10µA 25 nA 2, 3
IR= 20mA 20 nA 1
25 nA 2, 3
VR= 5.3V, IR= 45µA 20 nA 1
VR= 5.3V, IR= 50µA 25 nA 2, 3
VR= 5.3V, IR= 20mA 20 nA 1
25 nA 2, 3
ICMinimum Operating VR= VRef See(1) 9.0 µA 1
Current See(1) 10 µA 2, 3
VR= 5.3V See(1) 45 µA 1
See(1) 50 µA 2, 3
(1) Functional test.
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SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
LM185BY Electrical Characteristics DC Parameters Sub-
Symbol Parameter Conditions Notes Min Max Unit groups
VRef Reference Voltage IR= 100µA 1.228 1.252 V 1
1.215 1.255 V 2, 3
IR= 9µA 1.228 1.252 V 1
IR= 10µA 1.215 1.255 V 2, 3
IR= 1mA 1.228 1.252 V 1
1.215 1.255 V 2, 3
IR= 20mA 1.228 1.252 V 1
1.215 1.255 V 2, 3
VR= 5.3V, IR= 100µA 1.228 1.252 V 1
1.215 1.255 V 2, 3
VR= 5.3V, IR= 45µA 1.288 1.252 V 1
VR= 5.3V, IR= 50µA 1.215 1.255 V 2, 3
VR= 5.3V, IR= 1.0mA 1.288 1.252 V 1
1.215 1.255 V 2, 3
VR= 5.3V, IR= 20mA 1.288 1.252 V 1
1.215 1.255 V 2, 3
ΔVRef/ΔIRReference Voltage 9µA ≤IR≤1mA 1.0 mV 1
Change with Current 10µA ≤IR≤1mA 1.5 mV 2, 3
1mA ≤IR≤20mA 10 mV 1
20 mV 2, 3
VR= 5.3V, 45µA ≤IR≤1mA 1.0 mV 1
VR= 5.3V, 50µA ≤IR≤1mA 1.5 mV 2, 3
VR= 5.3V, 1mA ≤IR≤20mA 10 mV 1
20 mV 2, 3
ΔVRef / Reference Voltage VR= 5.3V, IR= 100µA 3.0 mV 1
ΔVOChange with Output 6.0 mV 2, 3
Voltage
IFFeedback Current IR= 9µA 20 nA 1
IR= 10µA 25 nA 2, 3
IR= 20mA 20 nA 1
25 nA 2, 3
VR= 5.3V, IR= 45µA 20 nA 1
VR= 5.3V, IR= 50µA 25 nA 2, 3
VR= 5.3V, IR= 20mA 20 nA 1
25 nA 2, 3
ICMinimum Operating VR= VRef See(1) 9.0 µA 1
Current See(1) 10 µA 2, 3
VR= 5.3V See(1) 45 µA 1
See(1) 50 µA 2, 3
TCTemperature See(2) 50 PPM/°C 1, 2, 3
Coefficient
(1) Functional test.
(2) 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 −55°C, 25°C, & 125°C or ΔVRef / (TMax −
TMin)
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Typical Performance Characteristics
Temperature Drift of 3
Representative Units Feedback Current
Figure 4. Figure 5.
Minimum Operating Current Reverse Characteristics
Figure 6. Figure 7.
Reverse Characteristics Forward Characteristics
Figure 8. Figure 9.
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SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
Typical Performance Characteristics (continued)
Output Noise Voltage Dynamic Output Impedance
Figure 10. Figure 11.
Response Time
Figure 12.
Temperature Coefficient Typical
LM185
Figure 13.
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SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
www.ti.com
TYPICAL APPLICATIONS
Precision 10V Reference Low AC Noise Reference
Figure 14. Figure 15.
25V Low Current Shunt Regulator 200 mA Shunt Regulator
Figure 16. Figure 17.
Series-Shunt 20 mA Regulator High Efficiency Low Power Regulator
Figure 18. Figure 19.
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SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
Voltage Level Detector Voltage Level Detector
Figure 20. Figure 21.
Fast Positive Clamp Bidirectional Clamp
2.4V + ΔVD1 ±2.4V
Figure 22. Figure 23.
Bidirectional Adjustable Clamp Bidirectional Adjustable Clamp
±1.8V to ±2.4V ±2.4V to ±6V
Figure 24. Figure 25.
*D1 can be any LED, VF=1.5V to 2.2V at 3 mA. D1 may act as an indicator. D1 will be on if ITHRESHOLD falls below the
threshold current, except with I=O.
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Simple Floating Current Detector Precision Floating Current Detector
Figure 26. Figure 27.
Current Source Centigrade Thermometer, 10mV/°C
Figure 28. Figure 29.
Freezer Alarm 1.2V Reference
Figure 30. Figure 31.
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SNVS386D –NOVEMBER 2005–REVISED MARCH 2013
5.0V Reference
Figure 32.
REVISION HISTORY SECTION
Released Revision Section Originator Changes
11/08/05 A New Release, Corporate format L. Lytle 2 MDS data sheets converted into one Corp.
data sheet format. MNLM185B-X Rev 0B0 and
MNLM185BY-X Rev 0B0 will be archived.
04/06/06 B Ordering Information Table, WG R. Malone Added NSID, Connection Diagram, Physical
Connection Diagram, Absolute Dimension Dwg, Thermal Resistance and
Maximum Ratings Section, Physical Package Weight for NAC package. Revision A
Dimensions Section will be Archived.
06/12/08 C LM185B and LM185BY Electrical Larry McGee Correct IC test, VR= VREF condition, subgroup
Section 1, 2, 3 moved limits to the maximum column.
Revision B will be Archived.
03/27/13 D All Changed layout of National Data Sheet to TI
format.
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PACKAGE OPTION ADDENDUM
www.ti.com 11-Apr-2013
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead/Ball Finish MSL Peak Temp
(3)
Op Temp (°C) Top-Side Markings
(4)
Samples
5962-9091402QYA ACTIVE CFP NAC 10 54 TBD Call TI Call TI -55 to 125 LM185BWG
/883 Q
5962-90914
02QYA ACO
02QYA >T
LM185BWG/883 ACTIVE CFP NAC 10 54 TBD Call TI Call TI -55 to 125 LM185BWG
/883 Q
5962-90914
02QYA ACO
02QYA >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.
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. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Apr-2013
Addendum-Page 2
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
MECHANICAL DATA
NAC0010A
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WG10A (Rev H)
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