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LM285 Datasheet(PDF) 1 Page - ON Semiconductor

No. de Pieza. LM285
Descripción  Micropower Voltage Reference Diodes
Descarga  8 Pages
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Fabricante  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
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LM285 Datasheet(HTML) 1 Page - ON Semiconductor

   
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© Semiconductor Components Industries, LLC, 2004
July, 2004 − Rev. 5
1
Publication Order Number:
LM285/D
LM285, LM385B
Micropower Voltage
Reference Diodes
The LM285/LM385 series are micropower two−terminal bandgap
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.
The LM285/LM385 series are packaged in a low cost TO−226
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.
The LM385 is also available in a surface mount plastic package in
voltages of 1.235 V and 2.500 V.
Features
Pb−Free Packages are Available
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
Figure 1. Representative Schematic Diagram
Open
for 1.235 V
10 k
Cathode
Anode
100 k
500 W
600 k
600 k
425 k
74.3 k
8.45 k
600 k
360 k
Open
for 2.5 V
+
LM385−1.2
1.235 V
3.3 k
1.5 V
Battery
Standard Application
SOIC−8
D SUFFIX
CASE 751
http://onsemi.com
(Bottom View)
1
32
8
7
6
5
Cathode
N.C.
N.C.
N.C.
4
3
2
Anode
N.C.
N.C.
1
N.C.
N.C.
Cathode
Anode
TO−92−3 (TO−226)
Z SUFFIX
CASE 29
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
ORDERING INFORMATION
MARKING
DIAGRAMS
y85−z
ALYW
1
8
xxx
= 1.2 or 2.5
y
= 2 or 3
z
= 1 or 2
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W, WW = Work Week
LM285
Z−xxx
ALYWW
1
8


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