LM385B ON Semiconductor, LM385B Datasheet

LM385B

Manufacturer Part Number

LM385B

Description

Micropower Voltage Reference Diodes

Manufacturer

ON Semiconductor

Datasheet

1.LM385B.pdf (9 pages)

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Current page: 1 of 9
Download datasheet (115Kb)

LM285, LM385B

Micropower Voltage

Reference Diodes

voltage regulator diodes. Designed to operate over a wide current

range of 10 mA to 20 mA, these devices feature exceptionally low

dynamic impedance, low noise and stable operation over time and

temperature. Tight voltage tolerances are achieved by on−chip

trimming. The large dynamic operating range enables these devices to

be used in applications with widely varying supplies with excellent

regulation. Extremely low operating current make these devices ideal

for micropower circuitry like portable instrumentation, regulators and

other analog circuitry where extended battery life is required.

plastic case and are available in two voltage versions of 1.235 V and

2.500 V as denoted by the device suffix (see Ordering Information

table). The LM285 is specified over a −40°C to +85°C temperature

range while the LM385 is rated from 0°C to +70°C.

voltages of 1.235 V and 2.500 V.

Features

•

600 k

November, 2005 − Rev. 7

The LM285/LM385 series are micropower two−terminal bandgap

The LM285/LM385 series are packaged in a low cost TO−226

The LM385 is also available in a surface mount plastic package in

Operating Current from 10 mA to 20 mA

1.0%, 1.5%, 2.0% and 3.0% Initial Tolerance Grades

Low Temperature Coefficient

1.0 W Dynamic Impedance

Surface Mount Package Available

Pb−Free Packages are Available

for 2.5 V

600 k

Open

for 1.235 V

360 k

Figure 1. Representative Schematic Diagram

8.45 k

74.3 k

425 k

600 k

Cathode

Anode

500 W

10 k

100 k

See detailed ordering and shipping information in the package

dimensions section on page 6 of this data sheet.

(Bottom View)

Cathode

N.C.

Anode

(Note: Microdot may be in either location)

Battery

xxx

W, WW

ORDERING INFORMATION

1.5 V

Standard Application

http://onsemi.com

Anode

N.C.

−

= 1.2 or 2.5

= 2 or 3

= 1 or 2

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

CASE 751

D SUFFIX

Z SUFFIX

(TO−226)

CASE 29

SOIC−8

TO−92

Publication Order Number:

3.3 k

DIAGRAMS

LM385−1.2

MARKING

ALYWWG

LMy85

1.235 V

Z−xxx

ALYW

y85−z

LM285/D

Cathode

N.C.

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