LM185BYH-SMD [NSC]
Adjustable Micropower Voltage References; 可调微功耗电压基准
| 型号： | LM185BYH-SMD |
| 厂家： | 
National Semiconductor |
| 描述： | Adjustable Micropower Voltage References |
| 文件： | 总15页 (文件大小：714K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
April 2006
LM185QML
Adjustable Micropower Voltage References
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. Fur-
ther, the wide operating current allows it to replace older
references with a tighter tolerance part.
General Description
The LM185 are micropower 3-terminal adjustable band-gap
voltage reference diodes. Operating from 1.24 to 5.3V and
over a 10µA to 20mA current range, they feature exception-
ally low dynamic impedance and good temperature stability.
On-chip trimming is 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.
Features
n Adjustable from 1.24V to 5.30V
n Operating current of 10µA to 20mA
n 1Ω dynamic impedance
n Low temperature coefficient
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.
Ordering Information
NS Part Number
SMD Part Number
NS Package Number
Package Description
20LD Leadless Chip Carrier
3LD; T0–46 Metal Can
3LD; T0–46 Metal Can
3LD; T0–46 Metal Can
10LD Ceramic SOIC
LM185BE/883
E20A
H03H
LM185BH/883
LM185BYH/883
LM185BYH-SMD
LM185BWG/883
H03H
5962–9091401MXA
5962–9091402QYA
H03H
WG10A
Connection Diagrams
TO-46
Metal Can Package
20156301
Bottom View
© 2006 National Semiconductor Corporation
DS201563
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Connection Diagrams (Continued)
20-Leadless Chip Carrier
20156315
Top View
10-Lead Ceramic SOIC
20156303
Top View
Block Diagram
20156313
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2
Schematic Diagram
20156308
3
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Absolute Maximum Ratings (Note 1)
Reverse Current
30mA
10mA
Forward Current
Operating Temperature Range
Storage Temperature
−55˚C ≤ TA ≤ 125˚C
−55˚C ≤ TA ≤ 150˚C
150˚C
Maximum Junction Temperature TJmax
Lead Temperature (soldering, 10 seconds)
Thermal Resistance
300˚C
θJA
LCC Package (Still Air)
LCC Package (500LF/Min Air flow)
Metal Can Package (Still Air)
Metal Can Package (500LF/Min Air flow)
Ceramic SOIC Package (Still Air)
Ceramic SOIC Package (500LF/Min Air flow)
θJC
100˚C/W
73˚C/W
300˚C/W
139˚C/W
194˚C/W
128˚C/W
LCC Package
25˚C/W
57˚C/W
23˚C/W
Metal Can Package
Ceramic SOIC Package
Package Weight (Typical)
LCC Package
TBD
TBD
Metal Can Package
Ceramic SOIC Package
ESD Tolerance (Note 2)
210mg
500V
Quality Conformance Inspection
Mil-Std-883, Method 5005 - Group A
Subgroup
Description
Static tests at
Temp ˚C
25
1
2
Static tests at
125
-55
25
3
Static tests at
4
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
Settling time at
Settling time at
Settling time at
5
125
-55
25
6
7
8A
8B
9
125
-55
25
10
11
12
13
14
125
-55
25
125
-55
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4
LM185B Electrical Characteristics
DC Parameters
Sub-
groups
1
Symbol
VRef
Parameter
Reference Voltage
Conditions
IR = 100µA
Notes
Min Max
Unit
1.228 1.252
V
V
1.215 1.255
2, 3
1
IR = 9µA
IR = 10µA
IR = 1mA
1.228 1.252
V
1.215 1.255
V
2, 3
1
1.228 1.252
V
1.215 1.255
V
2, 3
1
IR = 20mA
1.228 1.252
V
1.215 1.255
V
2, 3
1
VR = 5.3V, IR = 100µA
1.228 1.252
V
1.215 1.255
V
2, 3
1
VR = 5.3V, IR = 45µA
VR = 5.3V, IR = 50µA
VR = 5.3V, IR = 1.0mA
1.288 1.252
V
1.215 1.255
V
2, 3
1
1.288 1.252
V
1.215 1.255
V
2, 3
1
VR = 5.3V, IR = 20mA
1.288 1.252
V
1.215 1.255
V
2, 3
1
∆VRef/∆IR
Reference Voltage Change with 9µA ≤ IR ≤ 1mA
1.0
1.5
10
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
nA
nA
nA
nA
nA
nA
nA
nA
µA
µA
µA
µA
Current
10µA ≤ IR ≤ 1mA
1mA ≤ IR ≤ 20mA
2, 3
1
20
2, 3
1
VR = 5.3V, 45µA ≤ IR ≤ 1mA
VR = 5.3V, 50µA ≤ IR ≤ 1mA
VR = 5.3V, 1mA ≤ IR ≤ 20mA
1.0
1.5
10
2, 3
1
20
2, 3
1
∆VRef
∆VO
/
Reference Voltage Change with VR = 5.3V, IR = 100µA
Output Voltage
3.0
6.0
20
2, 3
1
IF
Feedback Current
IR = 9µA
IR = 10µA
IR = 20mA
25
2, 3
1
20
25
2, 3
1
VR = 5.3V, IR = 45µA
VR = 5.3V, IR = 50µA
VR = 5.3V, IR = 20mA
20
25
2, 3
1
20
25
2, 3
1
IC
Minimum Operating Current
VR = VRef
VR = 5.3V
(Note 3)
(Note 3)
(Note 3)
(Note 3)
9.0
10
2, 3
1
45
50
2, 3
5
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LM185BY Electrical Characteristics
DC Parameters
Sub-
groups
1
Symbol
VRef
Parameter
Reference Voltage
Conditions
IR = 100µA
Notes
Min Max
Unit
1.228 1.252
V
V
1.215 1.255
2, 3
1
IR = 9µA
IR = 10µA
IR = 1mA
1.228 1.252
V
1.215 1.255
V
2, 3
1
1.228 1.252
V
1.215 1.255
V
2, 3
1
IR = 20mA
1.228 1.252
V
1.215 1.255
V
2, 3
1
VR = 5.3V, IR = 100µA
1.228 1.252
V
1.215 1.255
V
2, 3
1
VR = 5.3V, IR = 45µA
VR = 5.3V, IR = 50µA
VR = 5.3V, IR = 1.0mA
1.288 1.252
V
1.215 1.255
V
2, 3
1
1.288 1.252
V
1.215 1.255
V
2, 3
1
VR = 5.3V, IR = 20mA
1.288 1.252
V
1.215 1.255
V
2, 3
1
∆VRef/∆IR
Reference Voltage Change with 9µA ≤ IR ≤ 1mA
1.0
1.5
10
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
nA
nA
nA
nA
nA
nA
nA
nA
µA
µA
µA
µA
PPM/˚C
Current
10µA ≤ IR ≤ 1mA
1mA ≤ IR ≤ 20mA
2, 3
1
20
2, 3
1
VR = 5.3V, 45µA ≤ IR ≤ 1mA
VR = 5.3V, 50µA ≤ IR ≤ 1mA
VR = 5.3V, 1mA ≤ IR ≤ 20mA
1.0
1.5
10
2, 3
1
20
2, 3
1
∆VRef
∆VO
/
Reference Voltage Change with VR = 5.3V, IR = 100µA
Output Voltage
3.0
6.0
20
2, 3
1
IF
Feedback Current
IR = 9µA
IR = 10µA
IR = 20mA
25
2, 3
1
20
25
2, 3
1
VR = 5.3V, IR = 45µA
VR = 5.3V, IR = 50µA
VR = 5.3V, IR = 20mA
20
25
2, 3
1
20
25
2, 3
1
IC
Minimum Operating Current
Temperature Coefficient
VR = VRef
VR = 5.3V
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 4)
9.0
10
2, 3
1
45
50
2, 3
1, 2, 3
TC
50
Note 1: 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.
Note 2: Human body model, 1.5 kΩ in series with 100 pF.
Note 3: Functional test.
Note 4: The average temperature coefficient is defined as the maximum deviation of reference voltage, at all measured temperatures between the operating T
Min
& T , divided by (T
Max
− T ). The measured temperatures (T
Min
) are −55˚C, 25˚C, & 125˚C or ∆V
Measured
/ (T
− T
Min
)
Max
Ref
Max
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6
Typical Performance Characteristics
Temperature Drift of 3
Representative Units
Feedback Current
20156317
20156316
Minimum Operating Current
Reverse Characteristics
20156318
20156319
Reverse Characteristics
Forward Characteristics
20156320
20156321
7
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Typical Performance Characteristics (Continued)
Output Noise Voltage
Dynamic Output Impedance
20156323
20156322
Response Time
20156324
Temperature Coefficient Typical
LM185
20156304
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8
Typical Applications
Precision 10V Reference
Low AC Noise Reference
20156325
20156326
25V Low Current Shunt Regulator
200 mA Shunt Regulator
20156327
20156328
9
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Typical Applications (Continued)
Series-Shunt 20 mA Regulator
High Efficiency Low Power Regulator
20156329
20156330
Voltage Level Detector
Voltage Level Detector
20156331
20156332
Fast Positive Clamp
Bidirectional Clamp
2.4V
2.4V + ∆VD1
20156334
20156333
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10
Typical Applications (Continued)
Bidirectional Adjustable Clamp
1.8V to 2.4V
Bidirectional Adjustable Clamp
2.4V to 6V
20156336
20156335
Simple Floating Current Detector
Current Source
20156338
20156337
11
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Typical Applications (Continued)
Precision Floating Current Detector
20156339
*D1 can be any LED, V =1.5V to 2.2V at 3 mA. D1 may act as an indicator. D1 will be on if I
F
falls below the threshold current, except with I=O.
THRESHOLD
Centigrade Thermometer, 10mV/˚C
Freezer Alarm
20156312
20156311
1.2V Reference
5.0V Reference
20156314
20156302
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12
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
Connection Diagram, Absolute
Maximum Ratings Section, Physical
Dimensions Section
R. Malone
Added NSID, Connection Diagram, Physical
Dimension Dwg, Thermal Resistance and
Package Weight for WG package. Revision
A will be Archived.
13
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Physical Dimensions inches (millimeters) unless otherwise noted
20-Leadless Chip Carrier (E)
NS Package Number E20A
TO-46 Metal Can Package (H)
NS Package Number H03H
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14
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Ceramic SOIC Package (WG)
NS Package Number WG10A
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.
For the most current product information visit us at www.national.com.
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