LM385M3X-2.5 National Semiconductor, LM385M3X-2.5 Datasheet
LM385M3X-2.5
Manufacturer Part Number
LM385M3X-2.5
Description
Regulator, Voltage; Thermocouple Type, Voltage Regulator; SOT-23; Surface; 0 to
Manufacturer
National Semiconductor
Type
Voltage Referencer
Datasheet
1.LM385M3X-2.5.pdf
(4 pages)
Specifications of LM385M3X-2.5
Current, Output
20 mA
Current, Supply
13 μA
Package Type
SOT-23
Temperature, Operating, Range
0 to +70 °C
Voltage, Breakdown, Reverse
2.5 V
Voltage, Noise
120 μV
Available stocks
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Price
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Part Number:
LM385M3X-2.5
Manufacturer:
NS
Quantity:
9
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LM385M3X-2.5
Manufacturer:
NS
Quantity:
6 000
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LM385M3X-2.5
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MAXIM
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LM385M3X-2.5
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LM385M3X-2.5/NOPB
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NS/国半
Quantity:
20 000
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LM385M3X-2.5/NOPB
Manufacturer:
NSC
Quantity:
12 005
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-ter-
minal band-gap voltage regulator diodes. Operating over a 20
μA to 20 mA current range, they feature exceptionally low dy-
namic impedance and good temperature stability. On-chip
trimming is used to provide tight voltage tolerance. Since the
LM-185-2.5 band-gap reference uses only transistors and re-
sistors, low noise and good long term stability result.
Careful design of the LM185-2.5 has made the device excep-
tionally tolerant of capacitive loading, making it easy to use in
almost any reference application. The wide dynamic operat-
ing 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 re-
quiring 1.2V see LM185-1.2.
Connection Diagrams
* Pin 3 is attached to the Die Attach Pad (DAP) and should be connected to Pin 2 or left floating.
LM385BXZ-2.5 or LM385BYZ-2.5
See NS Package Number Z03A
LM285BXZ-2.5, LM285BYZ-2.5
LM385AYZ-2.5, LM385BZ-2.5,
Order Number LM285Z-2.5,
LM385Z-2.5, LM385AXZ-2.5
Plastic Package
Bottom View
TO-92
551908
See NS Package Number MA03B
Order Number LM385M3-2.5
SOT-23
The LM185-2.5 is rated for operation over a −55°C to 125°C
temperature range while the LM285-2.5 is rated −40°C to 85°
C and the LM385-2.5 0°C to 70°C. 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
■
■
■
■
■
■
551929
±20 mV (±0.8%) max. initial tolerance (A grade)
Operating current of 20 μA to 20 mA
0.6Ω dynamic impedance (A grade)
Low temperature coefficient
Low voltage reference—2.5V
1.2V device and adjustable device also available—
LM185-1.2 series and LM185 series, respectively
LM385BXM-2.5 or LM385BYM-2.5
See NS Package Number M08A
LM285BXM-2.5, LM285BYM-2.5
Order Number LM285M-2.5,
LM385M-2.5, LM385BM-2.5
SO Package
551911
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LM385M3X-2.5 Summary of contents
Page 1
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-ter- minal band-gap voltage regulator diodes. Operating over a 20 μ current range, they feature exceptionally low dy- namic impedance and good temperature stability. On-chip trimming ...
Page 2
... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reverse Current Forward Current Operating Temperature Range (Note 3) LM185-2.5 LM285-2.5 LM385-2.5 Electrical Characteristics (Note 4) Parameter Reverse Breakdown I R Voltage Minimum Operating ...
Page 3
Electrical Characteristics Parameter Conditions Reverse T = 25°C, A Breakdown ≤ ≤ 20 μA Voltage Minimum Operating Current LM385M3-2.5 ≤ ≤ 20 μA Reverse Breakdown Voltage ≤ ≤ Change with 1 mA ...
Page 4
SOT-23 Package (M3) Order Number LM385M3-2.5 NS Package Number MA03B 12 ...