LM385Z Datasheet, PDF (1/23 Pages) Texas Instruments – LM185/LM285/LM385 Adjustable Micropower Voltage References

LM185-ADJ, LM285-ADJ, LM385-ADJ
www.ti.com
SNVS741F – FEBRUARY 2000 – REVISED APRIL 2013
LM185/LM285/LM385 Adjustable Micropower Voltage References
Check for Samples: LM185-ADJ, LM285-ADJ, LM385-ADJ
FEATURES
1
•2 Adjustable from 1.24V to 5.30V
• Operating Current of 10μA to 20mA
• 1% and 2% Initial Tolerance
• 1Ω Dynamic Impedance
• Low Temperature Coefficient
DESCRIPTION
The LM185/LM285/LM385 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 exceptionally 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.
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.
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. Further, the wide operating
current allows it to replace older references with a
tighter tolerance part.
The LM185 is rated for operation over a −55°C to
125°C temperature range, while the LM285 is rated
−40°C to 85°C and the LM385 0°C to 70°C. The
LM185 is available in a hermetic TO package and a
LCCC package, while the LM285/LM385 are
available in a low-cost TO-92 package, as well as
SOIC.
Connection Diagram
Figure 1. TO-92 Package
Bottom View
Figure 2. TO Package
Bottom View
Figure 3. SOIC Package
Top View
Figure 4. 20-LCCC
Top View
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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