HDSP-2534 Avago Technologies US Inc., HDSP-2534 Datasheet - Page 14
![LED DISPLAY 5X7 8CHAR 5MM RED](/photos/7/94/79441/fig_4_1673_t053_smart_displays_sml.jpg)
HDSP-2534
Manufacturer Part Number
HDSP-2534
Description
LED DISPLAY 5X7 8CHAR 5MM RED
Manufacturer
Avago Technologies US Inc.
Series
HDSP-253xr
Datasheet
1.HDSP-2533.pdf
(15 pages)
Specifications of HDSP-2534
Display Type
Alphanumeric
Common Pin
*
Package / Case
28-DIP
Color
Red
Size / Dimension
1.69" x .45" (42.9mm x 11.4mm)
Number Of Digits/alpha
8
Digit/alpha Size
0.20" (5mm)
Number Of Digits
8
Character Size
2.54 mm x 4.57 mm
Illumination Color
Red
Wavelength
637 nm
Operating Voltage
5 V
Operating Current
410 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Luminous Intensity
25 ucd
Viewing Area (w X H)
40.06 mm x 4.57 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
516-1166-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HDSP-2534
Manufacturer:
Avago Technologies US Inc.
Quantity:
135
Company:
Part Number:
HDSP-2534
Manufacturer:
AVAGO
Quantity:
5 000
Table 3 shows the calculated maximum allowable ambient
temperature for several different sets of operating condi-
tions. The worst case alphanumeric characters (#,@,B)
have 20 pixels. Displaying eight 20-pixel characters will
not occur in normal operation. Thus, using eight 20-pixel
characters to calculate power dissipation will over estimate
the power and the IC junction temperature. The average
number of pixels per character, supply voltage, brightness
level, and number of characters are needed to calculate
the power dissipated by the IC. The ambient temperature,
power dissipated by the IC, and the thermal resistance
are then used to calculate IC junction temperature. The
typical alphanumeric character is 15 pixels. For conditions
not listed in Table 3, you can calculate the power dissipat-
ed by the IC and use Figure 10 to determine the maximum
ambient temperature.
Table 3. Maximum Allowable Ambient Temperature for Various Operating Conditions
AlGaAs Red
Character
# (20 dots)
# (20 dots)
# (20 dots)
# (20 dots)
# (20 dots)
# (20 dots)
# (20 dots)
# (20 dots)
V (12 dots)
Table 4. Maximum Allowable Ambient Temperature for Various Operating Conditions (cont’ d .)
All Colors Except AlGaAs Red
Character
# (20 dots)
# (20 dots)
# (20 dots)
# (20 dots)
# (20 dots)
# (20 dots)
V (12 dots)
The actual IC temperature is easy to measure. Pin 17 is thermally and electrically connected to the IC substrate. The thermal resistance from pin 17 to
the IC is 16°C/W. The procedure to measure the IC junction temperature is as follows:
1. Measure V
2. Measure the temperature of pin 17 after 45 minutes. Use an electrically isolated thermal couple probe.
3. T
14
J
(IC) = T
pin
DD
+ V
and I
DD
x I
DD
Number of
Characters
8
8
8
7
6
8
8
8
8
Number of
Characters
8
8
8
7
6
8
8
DD
for the display. Measure V
x 16°C/W.
Brightness
Level
100%
100%
100%
100%
100%
80%
80%
53%
100%
Brightness
Level
100%
100%
100%
100%
100%
80%
100%
DD
between pins 15 and 16. Measure the current entering pin 15.
V
V
5.5
5.25
5.0
5.5
5.5
5.5
5.25
5.5
5.5
V
V
5.5
5.25
5.0
5.5
5.5
5.5
5.5
DD
DD
Figure 10. Maximum allowable power dissipation vs. ambient temperature.
T
J
MAX = 150°C or 120°C.
I
mA
408
387
366
357
306
327
310
216
228
I
mA
373
354
335
326
280
298
207
DD
DD
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
50
ALL OTHER COLORS
55 60
T
A
AlGaAs
– AMBIENT TEMPERATURE – C
65
P
W
2.2
2.0
1.8
2.0
1.7
1.8
1.6
1.2
1.3
P
W
2.0
1.9
1.67
1.8
1.5
1.6
1.1
70
D
D
Rθ
75
J-A
= 39C/W
80
85
Rq
°C/W
39
39
39
39
39
39
39
39
39
Rq
°C/W
39
39
39
39
39
39
39
J-A
J-A
90
T
°C
64
72
80
72
84
80
85
85
85
T
°C
72
77
85
80
85
85
85
A
A
MAX
MAX