Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

ISD2012 Datasheet(PDF) 11 Page - OSRAM GmbH

Part # ISD2012
Description  Serial Input Alphanumeric Industrial Display
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  OSRAM [OSRAM GmbH]
Direct Link  http://www.osram.com
Logo OSRAM - OSRAM GmbH

ISD2012 Datasheet(HTML) 11 Page - OSRAM GmbH

Back Button ISD2012 Datasheet HTML 7Page - OSRAM GmbH ISD2012 Datasheet HTML 8Page - OSRAM GmbH ISD2012 Datasheet HTML 9Page - OSRAM GmbH ISD2012 Datasheet HTML 10Page - OSRAM GmbH ISD2012 Datasheet HTML 11Page - OSRAM GmbH ISD2012 Datasheet HTML 12Page - OSRAM GmbH ISD2012 Datasheet HTML 13Page - OSRAM GmbH ISD2012 Datasheet HTML 14Page - OSRAM GmbH ISD2012 Datasheet HTML 15Page - OSRAM GmbH Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 16 page
background image
ISD201X, ISD231X, ISD235X
2006-04-04
11
The small alphanumeric displays are hybrid LED and CMOS
assemblies that are designed for reliable operation in commercial
and industrial environments. Optimum reliability and optical
performance will result when the junction temperature of the LEDs
and CMOS ICs are kept as low as possible.
Thermal Modeling
ISD displays consist of two driver ICs and four 5 x 7 LED matrixes.
A thermal model of the display is shown in Figure „Thermal Model“.
It illustrates that the junction temperature of the semiconductor =
junction self heating + the case temperature rise + the ambient
temperature.
Equation 1 shows this relationship.
Thermal Model
See Equation 1 below.
The junction rise within the LED is the product of the thermal
impedance of an individual LED (37°C/W, DF=20%, F=200 Hz),
times the forward voltage, V
F(LED), and forward current IF(LED), of
13 – 14.5 mA. This rise averages T
J(LED)=1°C. The Table below
shows the V
F(LED) for the respective displays.
The junction rise within the LED driver IC is the combination of the
power dissipated by the IC quiescent current and the 28 row driver
current sinks. The IC junction rise is given in Equation 2.
A thermal resistance of 28°C/W results in a typical junction rise of
6°C.
See Equation 2 below.
For ease of calculations the maximum allowable electrical operat-
ing condition is dependent upon the aggregate thermal resistance
of the LED matrixes and the two driver ICs. All of the thermal man-
agement calculations are based upon the parallel combination of
these two networks which is 15°C/W. Maximum allowable power
dissipation is given in Equation 3.
Equation 3.
For further reference see Figures „Maximum Allowable Power Dis-
sipation vs. Temperature“ (page 6) and Figures from page 12 on.
Key to equation symbols
DF
Duty factor
I
CC
Quiescent IC current
I
COL
Column current
n
Number of LEDs on in a 5 x 7 array
P
CASE
Package power dissipation excluding LED
under consideration
P
COL
Power dissipation of a column
P
DISPLAY
Power dissipation of the display
P
LED
Power dissipation of a LED
R
qCA
Thermal resistance case to ambient
R
qJC
Thermal resistance junction to case
T
A
Ambient temperature
T
J(IC)
Junction temperature of an IC
T
J(LED)
Junction temperature of a LED
T
J(MAX)
Maximum junction temperature
V
CC
IC voltage
V
COL
Column voltage
V
F(LED)
Forward voltage of LED
Z
qJC
Thermal impedance junction to case
Optical Considerations
The light output of the LEDs is inversely related to the LED diode’s
junction temperature as shown in „Normalized Luminous Intensity
vs. Junction Temperature“ (page 12). For optimum light output,
keep the thermal resistance of the socket or PC board as low as
possible.
Equation 1.
Equation 2.
Model Number
VF
Min.
Typ.
Max.
ISD2010
ISD2310
1.6
1.7
2.0
ISD2011/2/3
ISD2311/2/3
ISD2351/2/3
1.9
2.2
3.0
IDDG5321
θ
R 1
LED Power
LED
T1
IC Power
Rθ2
IC
T2
LED Power
Rθ1
LED
T1
LED Power
LED
θ
R 1
T1
IC Power
θ
R 2
IC
T2
LED Power
R 1
θ
LED
T1
θ
R CA
P
DISPLAY
T
JMAX
() TA
RθJC RθCA
+
----------------------------------------
=
P
DISPLAY
5V
COL
I
COL
n35
() DF V
CC
I
CC
+
=
T
J LED
()
P
LED
Z θJC PCASE RθJC RθCA
+
() T
A
++
=
T
J LED
()
I
COL
28
()V
F LED
() ZθJC
[]
n35
()I
COL
DF 5V
COL
() V
CC
I
CC
+
[] RθJC RθCA
+
[] T
A
+
+
=
T
JIC
()
P
COL
RθJC RθCA
+
() T
A
+
=
T
JIC
()
5V
COL
V
F LED
()
() I
COL
2
() n35
()DF
⋅⋅
V
CC
I
CC
+
[] RθJC RθCA
+
[]
T
A
+
=


Similar Part No. - ISD2012

ManufacturerPart #DatasheetDescription
logo
List of Unclassifed Man...
ISD201 ETC-ISD201 Datasheet
76Kb / 3P
   HIGH DENSITY PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS
logo
ISOCOM COMPONENTS
ISD201 ISOCOM-ISD201 Datasheet
87Kb / 3P
   HIGH DENSITY PHOTOTRANSISTOR OPTICALLY COUPLED ISOLATORS
More results

Similar Description - ISD2012

ManufacturerPart #DatasheetDescription
logo
Siemens Semiconductor G...
MSD2310TXV SIEMENS-MSD2310TXV Datasheet
413Kb / 11P
   200 4-CHARACTER 5X7 DOT MATRIX SERIAL INPUT ALPHANUMERIC MILITARY DISPLAY
MSD2010TXV SIEMENS-MSD2010TXV Datasheet
426Kb / 11P
   150 4-Character 5x7 Dot Matrix Serial Input Alphanumeric Military Display
logo
Infineon Technologies A...
HDSP2000LP INFINEON-HDSP2000LP Datasheet
424Kb / 7P
   0.150 4-Character 5 x 7 Dot Matrix Serial Input Alphanumeric Display
April 4, 2000-11
logo
List of Unclassifed Man...
QBAD54R1 ETC2-QBAD54R1 Datasheet
505Kb / 10P
   Alphanumeric Display
QBAS230R1 ETC2-QBAS230R1 Datasheet
483Kb / 10P
   Alphanumeric Display
QBAS50R1 ETC2-QBAS50R1 Datasheet
501Kb / 10P
   Alphanumeric Display
QBAS230R1 ETC1-QBAS230R1 Datasheet
483Kb / 10P
   Alphanumeric Display
QBAS80XXZ ETC2-QBAS80XXZ Datasheet
468Kb / 10P
   Alphanumeric Display
QBAD54R1 ETC1-QBAD54R1 Datasheet
505Kb / 10P
   Alphanumeric Display
QBAS50R1 ETC1-QBAS50R1 Datasheet
468Kb / 10P
   Alphanumeric Display
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com