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LM185-25 ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 1 Page - National Semiconductor (TI)

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๋ถ€ํ’ˆ๋ช… LM185-25
์ƒ์„ธ๋‚ด์šฉ  Micropower Voltage Reference Diode
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LM185-2.5/LM285-2.5/LM385-2.5
Micropower Voltage Reference Diode
General Description
The
LM185-2.5/LM285-2.5/LM385-2.5
are
micropower
2-terminal band-gap voltage regulator diodes. Operating
over a 20 ยตA to 20 mA current range, they feature excep-
tionally low dynamic impedance and good temperature sta-
bility. On-chip trimming is used to provide tight voltage toler-
ance. Since the LM-185-2.5 band-gap reference uses only
transistors and resistors, low noise and good long term
stability result.
Careful design of the LM185-2.5 has made the device ex-
ceptionally 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 LM185-2.5 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. Fur-
ther, the wide operating current allows it to replace older
references with a tighter tolerance part. For applications
requiring 1.2V see LM185-1.2.
The LM185-2.5 is rated for operation over a โˆ’55หšC to 125หšC
temperature range while the LM285-2.5 is rated โˆ’40หšC to
85หšC and the LM385-2.5 0หšC to 70หšC. The LM185-2.5/
LM285-2.5 are available in a hermetic TO-46 package and
the LM285-2.5/LM385-2.5 are also available in a low-cost
TO-92 molded package, as well as S.O. and SOT-23. The
LM185-2.5 is also available in a hermetic leadless chip
carrier package.
Features
n ยฑ
20 mV (ยฑ0.8%) max. initial tolerance (A grade)
n
Operating current of 20 ยตA to 20 mA
n
0.6
โ„ฆ dynamic impedance (A grade)
n
Low temperature coefficient
n
Low voltage reference โ€” 2.5V
n
1.2V device and adjustable device also
available โ€” LM185-1.2 series and LM185 series,
respectively
Connection Diagrams
TO-92
Plastic Package
SO Package
00551908
Bottom View
Order Number LM285Z-2.5,
LM285BXZ-2.5, LM285BYZ-2.5
LM385Z-2.5, LM385AXZ-2.5
LM385AYZ-2.5, LM385BZ-2.5,
LM385BXZ-2.5 or LM385BYZ-2.5
See NS Package Number Z03A
00551911
Order Number LM285M-2.5,
LM285BXM-2.5, LM285BYM-2.5
LM385M-2.5, LM385BM-2.5
LM385BXM-2.5 or LM385BYM-2.5
See NS Package Number M08A
SOT-23
00551929
* Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to Pin 2 or left floating.
Order Number LM385M3-2.5
See NS Package Number MA03B
February 2005
ยฉ 2005 National Semiconductor Corporation
DS005519
www.national.com


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๋ถ€ํ’ˆ๋ช…์ƒ์„ธ๋‚ด์šฉHtml View์ œ์กฐ์‚ฌ
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AME385-2.5MICROPOWER VOLTAGE REFERENCE DIODE 1 2 3 4 5 MoreAnalog Microelectronics
AME385-12Micropower Voltage Reference Diode 1 2 3 4 5 MoreAnalog Microelectronics
CLM285-12Micropower Voltage Reference Diode 1 2 3 Calogic, LLC
AMS285-12MICROPOWER VOLTAGE REFERENCE DIODE 1 2 3 4 5 MoreAdvanced Monolithic Systems
AME385-25Micropower Voltage Reference Diode 1 2 3 4 5 MoreAnalog Microelectronics
CLM285-25Micropower Voltage Reference Diode 1 2 3 Calogic, LLC
AMS285-25MICROPOWER VOLTAGE REFERENCE DIODE 1 2 3 4 5 MoreAdvanced Monolithic Systems
AME40Micropower Voltage Reference Diode 1 2 3 4 5 MoreAnalog Microelectronics
AMS285ADJUSTABLE MICROPOWER VOLTAGE REFERENCE DIODE 1 2 3 4 5 MoreAdvanced Monolithic Systems

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