LM385M3X-1.2 National Semiconductor, LM385M3X-1.2 Datasheet
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LM385M3X-1.2
Manufacturer Part Number
LM385M3X-1.2
Description
IC VREF MICROPWR DIODE SOT23-3
Manufacturer
National Semiconductor
Specifications of LM385M3X-1.2
Reference Type
Shunt
Voltage - Output
1.235V
Tolerance
±2%
Temperature Coefficient
150ppm/°C
Number Of Channels
1
Current - Cathode
20µA
Current - Output
20mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
TO-236-3, SC-59, SOT-23-3
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Input
-
Current - Quiescent
-
Other names
LM385M3X-1.2TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM385M3X-1.2
Manufacturer:
NSC
Quantity:
2 500
Company:
Part Number:
LM385M3X-1.2
Manufacturer:
TI
Quantity:
12 400
Part Number:
LM385M3X-1.2
Manufacturer:
NS国半
Quantity:
20 000
Part Number:
LM385M3X-1.2(R11)
Manufacturer:
HG
Quantity:
20 000
Company:
Part Number:
LM385M3X-1.2/NOPB
Manufacturer:
National Semiconductor
Quantity:
33 322
Part Number:
LM385M3X-1.2/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
© 2000 National Semiconductor Corporation
LM185-1.2/LM285-1.2/LM385-1.2
Micropower Voltage Reference Diode
General Description
The
2-terminal band-gap voltage regulator diodes. Operating
over a 10 µA to 20 mA 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 LM185-1.2 band-gap reference uses only transis-
tors and resistors, low noise and good long term stability re-
sult.
Careful design of the LM185-1.2 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 LM185-1.2 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
LM185-1.2/LM285-1.2/LM385-1.2
LM385BXZ-1.2 or LM385BYZ-1.2
See NS Package Number Z03A
LM285BXZ-1.2, LM285BYZ-1.2
Order Number LM285Z-1.2,
LM385Z-1.2, LM385BZ-1.2
Plastic Package (Z)
Bottom View
T0-92
DS005518-10
DS005518
are
micropower
The LM185-1.2 is rated for operation over a −55˚C to 125˚C
temperature range while the LM285-1.2 is rated −40˚C to
85˚C and the LM385-1.2 0˚C to 70˚C. The LM185-1.2/
LM285-1.2 are available in a hermetic TO-46 package and
the LM285-1.2/LM385-1.2 are also available in a low-cost
TO-92 molded package, as well as SO and SOT-23. The
LM185-1.2 is also available in a hermetic leadless chip car-
rier package.
Features
n
n Operating current of 10 µA to 20 mA
n 0.6
n Low temperature coefficient
n Low voltage reference — 1.235V
n 2.5V device and adjustable device also available
n LM185-2.5 series and LM185 series, respectively
*
to Pin 2 or left floating.
Pin 3 is attached to the Die Attach Pad (DAP) and should be connected
±
4 mV (
max dynamic impedance (A grade)
±
See NS Package Number MA03B
0.3%) max. initial tolerance (A grade)
Order Number LM385M3-1.2
SOT23
DS005518-33
January 2000
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