LM385BM-2.5 National Semiconductor, LM385BM-2.5 Datasheet
![Voltage Reference](/photos/18/97/189768/3778330_sml.jpg)
LM385BM-2.5
Manufacturer Part Number
LM385BM-2.5
Description
Voltage Reference
Manufacturer
National Semiconductor
Specifications of LM385BM-2.5
Peak Reflow Compatible (260 C)
No
Current Rating
10A
Leaded Process Compatible
No
Mounting Type
Surface Mount
Supply Current
10mA
Package / Case
8-NSOIC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM385BM-2.5
Manufacturer:
NS
Quantity:
80
Part Number:
LM385BM-2.5
Manufacturer:
NS/国半
Quantity:
20 000
Company:
Part Number:
LM385BM-2.5/NOPB
Manufacturer:
NS/TI
Quantity:
100
© 1999 National Semiconductor Corporation
LM185-2.5/LM285-2.5/LM385-2.5
Micropower Voltage Reference Diode
General Description
The
2-terminal band-gap voltage regulator diodes. Operating
over a 20 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 LM-185-2.5 band-gap reference uses only transis-
tors and resistors, low noise and good long term stability re-
sult.
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 ref-
erences with a tighter tolerance part. For applications requir-
ing 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.
LM185-2.5/LM285-2.5/LM385-2.5
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
DS005519-8
DS005519
are
See NS Package Number MA03B
micropower
Order Number LM385M3-2.5
SOT-23
DS005519-29
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 car-
rier package.
Features
n
n Operating current of 20 µA to 20 mA
n 0.6
n Low temperature coefficient
n Low voltage reference — 2.5V
n 1.2V device and adjustable device also
±
available — LM185-1.2 series and LM185 series,
respectively
20 mV (
dynamic impedance (A grade)
LM385BXM-2.5 or LM385BYM-2.5
±
See NS Package Number M08A
LM285BXM-2.5, LM285BYM-2.5
0.8%) max. initial tolerance (A grade)
Order Number LM285M-2.5,
LM385M-2.5, LM385BM-2.5
SO Package
DS005519-11
December 1999
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