LM185H25NOPB National Semiconductor, LM185H25NOPB Datasheet

LM185H25NOPB

Manufacturer Part Number

LM185H25NOPB

Description

CAN

Manufacturer

National Semiconductor

Datasheet

1.LM185H25NOPB.pdf (14 pages)

Specifications of LM185H25NOPB

Date_code

05+

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LM185/LM285/LM385

Adjustable Micropower Voltage References

General Description

The LM185/LM285/LM385 are micropower 3-terminal ad-

justable 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 tem-

perature 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 refer-

ence 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 ana-

log circuitry with battery life approaching shelf life. Further, the

Connection Diagrams

Plastic Package

SOIC Package

Bottom View

Top View

TO-92

525009

5250

525010

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 tem-

perature 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-46 package and a leadless chip carrier package, while the

LM285/LM385 are available in a low-cost TO-92 molded

package, as well as S.O.

Features

■

Adjustable from 1.24V to 5.30V

Operating current of 10μA to 20mA

1% and 2% initial tolerance

1Ω dynamic impedance

Low temperature coefficient

20-Leadless Chip Carrier

Metal Can Package

Bottom View

Top View

TO-46

525001

525015

January 30, 2008

www.national.com

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