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MICROCIRCUIT DATA SHEET MNLM185BY-2.5-X REV 0A0
MICROPOWER VOLTAGE REFERENCE DIODE
General Description
The LM185BY-2.5 is a micropower 2-terminal band-gap voltage regualtor diode. Operating over a 20 uA to 20 mA current range, it features exceptionally low dynamic impedance and good temperature stability. On-chip trimming is used to provide tight voltage tolerance. Since the LM185BY-2.5 band-gap reference uses only transistors and resistors, low noise and good long term stability result. Careful design of the LM185BY-2.5 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 LM185BY-2.5 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. For applications requiring 1.2V see LM185BY-1.2. Original Creation Date: 08/15/95 Last Update Date: 02/11/99 Last Major Revision Date: 08/15/95
Industry Part Number
LM185BY
NS Part Numbers
LM185BYH2.5-SMD LM185BYH2.5/883
Prime Die
LM185
Controlling Document
SEE FEATURES SECTION
Processing
MIL-STD-883, Method 5004
Subgrp Description
1 2 3 4 5 6 7 8A 8B 9 10 11 Static tests at Static tests at Static tests at Dynamic tests at Dynamic tests at Dynamic tests at Functional tests at Functional tests at Functional tests at Switching tests at Switching tests at Switching tests at
Temp ( oC)
+25 +125 -55 +25 +125 -55 +25 +125 -55 +25 +125 -55
Quality Conformance Inspection
MIL-STD-883, Method 5005
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MNLM185BY-2.5-X REV 0A0
MICROCIRCUIT DATA SHEET
Features
Operating current of 20uA to 20mA. 1 Ohm dynamic impedance (Typical). Low temperature coefficient Low voltage reference-2.5V CONTROLLING DOCUMENT: LM185BYH2.5-SMD 5962-8759406XA
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MNLM185BY-2.5-X REV 0A0
MICROCIRCUIT DATA SHEET
(Absolute Maximum Ratings)
(Note 1) Reverse Current 30mA Forward Current 10mA Operating Temperature Range -55 C to +125 C Maximum Junction Temperature 150 C Storage Temperature -55 C to +150 C Lead Temperature (Soldering, 10 seconds) Thermal Resistance ThetaJA H-Pkg (Still Air) H-Pkg (500LF/Min Air flow) ThetaJC H-Pkg Package Weight (Typcial) Note 1: 300 C
300 C/W 139 C/W 57 C/W
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
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MNLM185BY-2.5-X REV 0A0
MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS:
SYMBOL Vref PARAMETER Reverse Breakdown Voltage Ir = 20uA Ir = 30uA Ir = 1mA CONDITIONS NOTES PINNAME MIN 2.462 2.425 2.462 2.425 Ir = 20mA 2.462 2.425 Delta Vref/ Delta Ir Reverse Breakdown Voltage Change with Current 20uA < Ir < 1mA 30uA < Ir < 1mA 1mA < Ir < 20mA 1mA < Ir < 20mA Vf Tc Forward Bias Voltage Temperature Coefficient Note 1: If = 2mA 1 -1.0 -1.5 -10.0 -20.0 -1.0 MAX 2.538 2.575 2.538 2.575 2.538 2.575 1.0 1.5 10.0 20.0 -0.4 50 UNIT V V V V V V mV mV mV mV V SUBGROUPS 1 2, 3 1 2, 3 1 2, 3 1 2, 3 1 2, 3 1
ppm/ 2, 3 C
The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between the operating Tmax and Tmin, divided by Tmax - Tmin. The measured temperatures are -55 C, -40 C, 0 C, 25 C, 70 C, 85 C and 125 C.
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MNLM185BY-2.5-X REV 0A0
MICROCIRCUIT DATA SHEET
Graphics and Diagrams
GRAPHICS# 05886HRB2 H02ARE P000364A DESCRIPTION METAL CAN,TO-46,2LD,.100 DIA P.C. (H) (B/I CKT) METAL CAN,TO-46,2LD,.100 DIA P.C. (H)(P/P DWG) METAL CAN (H-2.5), TO-46, 2 LEAD (PINOUT)
See attached graphics following this page.
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GENERAL NOTES: 1. GENERIC - INDUSTRY TYPE DEVICES THAT MAY BE USED WITH THIS CIRCUIT SHALL BE AS SPECIFIED IN NSC BURN-IN CIRCUIT LIST R512B-04. 2. ALL 1/4 AND 1/2 WATT RESISTORS SHALL BE METAL FILM. ALL 1, 2, AND 3 WATT RESISTORS SHALL BE WIRE WOUND. TOLERANCE SHALL BE +/-5% UNLESS OTHERWISE SPECIFIED. 3. ALL VOLTAGES SPECIFIED SHALL BE MEASURED AT THE "DEVICE UNDER TEST" PIN AND SHALL BE MINIMUM VALUES UNLESS OTHERWISE SPECIFIED. 4. WHEN APPLICABLE, CLOCK PULSES SPECIFIED SHALL HAVE 50% DUTY CYCLE. 5. THIS DRAWING COMPLIES WITH MIL-PRF-38535, WHEN APPLICABLE.
ECN
REV
APPROVALS
DATE
A1 B1 B2
R Wallace P.Reid J. GOMEZ
10/21/87 2/13/92 10/27/98
ADJ
1 V+ +5.5V 3 R1 2
TOP VIEW
DUT CONDITIONS SYMBOL LIMITS MIN. MAX. UNITS SYMBOL LIMITS MIN. MAX. UNITS
COMPONENT REQUIREMENTS PER POSITION REF QTY DESCRIPTION DESIG.
V+
5.0
6.0
VOLTS
R1
1
4.32K OHMS 1/4 WATT
NOTES:
6. DFC PIN 2. 7. LM185-ADJ
MIL/AEROSPACE OPERATIONS 2900 SEMICONDUCTOR DRIVE SANTA CLARA, CA 95050
N
BURN-IN CIRCUIT
CUSTOMER ORIGINATOR DATE PACKAGE TYPE CHECKED BY
SH
OF
1 H03
MIL DATE NSC TEST CONDITION
1
NOTE 7
DRAWING NUMBER REV
C B2
J.GOMEZ
10/27/98
05886HR

N

MNLM185BY-2.5-X REV 0A0
MICROCIRCUIT DATA SHEET
Revision History
Rev
0A0
ECN #
Rel Date
Originator
Rose Malone
Changes
Archive RETS185X-2.5, Rev. 0C. Update MDS MNLM185BY-X-2.5, Rev. 0AL to MNLM185BY-2.5-X, Rev. 0A0, Fully Released MDS. Updated Discription, Features and Absolute section. Changed nomenclature, verified NSID. Deleted Subgroup 1 from Tc electrical.
M0003214 02/11/99
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