LM185-ADJ, LM285-ADJ, LM385-ADJ

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SNVS741F – FEBRUARY 2000 – REVISED APRIL 2013

LM185/LM285/LM385 Adjustable Micropower Voltage References

Check for Samples: LM185-ADJ, LM285-ADJ, LM385-ADJ

Careful design of the LM185 has made the device

1

FEATURES

tolerant of capacitive loading, making it easy to use in

2

•

Adjustable from 1.24V to 5.30V

almost any reference application. The wide dynamic

•

Operating Current of 10

μA to 20mA

operating range allows its use with widely varying

supplies with excellent regulation.

•

1% and 2% Initial Tolerance

•

1

Ω Dynamic Impedance

The extremely low power drain of the LM185 makes it

useful for micropower circuitry. This voltage reference

•

Low Temperature Coefficient

can be used to make portable meters, regulators or

general purpose analog circuitry with battery life

DESCRIPTION

approaching shelf life. Further, the wide operating

The LM185/LM285/LM385 are micropower 3-terminal

current allows it to replace older references with a

adjustable

band-gap

voltage

reference

diodes.

tighter tolerance part.

Operating from 1.24 to 5.3V and over a 10

μA to

The LM185 is rated for operation over a

−55°C to

20mA current range, they feature exceptionally low

125°C temperature range, while the LM285 is rated

dynamic impedance and good temperature stability.

−40°C to 85°C and the LM385 0°C to 70°C. The

On-chip trimming is used to provide tight voltage

LM185 is available in a hermetic TO package and a

tolerance. Since the LM185 band-gap reference uses

LCCC

package,

while

the

LM285/LM385

are

only transistors and resistors, low noise and good

available in a low-cost TO-92 package, as well as

long-term stability result.

SOIC.

Connection Diagram

Figure 1. TO-92 Package

Figure 2. TO Package

Bottom View

Bottom View

Figure 3. SOIC Package

Figure 4. 20-LCCC

Top View

Top View

1

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2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2000–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.