LITEON LTP

LITE-ON ELECTRONICS, INC.
Property of Lite-On Only
FEATURES
*2.0 inch (50.8 mm) MATRIX HEIGHT.
*LOW POWER REQUIREMENT.
*SINGLE PLANE, WIDE VIEWING ANGLE.
*SOLID STATE RELIABILITY.
*5×7 ARRAY WITH X-Y SELECT.
*COMPATIBLE WITH USASCII AND EBCDIC CODES.
*STACKABLE HORIZONTALLY.
*CATEGORIZED FOR LUMINOUS INTENSITY.
DESCRIPTION
The LTP-2157AKA is a 2.0 inch (50.8 mm) matrix height 5×7
dot matrix display. This device utilizes AlInGaP Super Orange
LED chips, which are made from AlInGaP on a non-transparent
GaAs substrate and has a gray face and white dot color.
DEVICE
PART NO.
AlInAaP Super Orange
LTP-2157AKA
PART NO.: LTP-2157AKA
BNS-OD-C131/A4
DESCRIPTION
Cathode Column
Anode Row
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LITE-ON ELECTRONICS, INC.
Property of Lite-On Only
PACKAGE DIMENSIONS
NOTES: All dimensions are in millimeters. Tolerances are ± 0.25 mm (0.01“) unless otherwise noted.
INTERNAL CIRCUIT DIAGRAM
PART NO.: LTP-2157AKA
BNS-OD-C131/A4
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LITE-ON ELECTRONICS, INC.
Property of Lite-On Only
PIN CONNECTION
No.
CONNECTION
1
ANODE ROW 5
2
CATHODE ROW 7
3
ANODE COLUMN 2
4
ANODE COLUMN 3*1
5
CATHODE ROW 4*2
6
ANODE COLUMN 5
7
ANODE ROW 6
8
ANODE ROW 3
9
ANODE ROW 1
10
CATHODE COLUMN 4
11
CATHODE COLUMN 3*1
12
ANODE ROW 4*2
13
CATHODE COLUMN 1
14
ANODE ROW 2
NOTES : 1. Pin 4 & 11 are internally connected.
2. Pin 5 & 12 are internally connected.
PART NO.: LTP-2157AKA
BNS-OD-C131/A4
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LITE-ON ELECTRONICS, INC.
Property of Lite-On Only
ABSOLUTE MAXIMUM RATING AT Ta=25oC
PARAMETER
MAXIMUM RATING
UNIT
Average Power Dissipation Per Dot
33
mW
Peak Forward Current Per Dot
90
mA
Average Forward Current Per Dot
Derating Linear From 25℃ Per Dot
13
0.17
mA
mA/℃
Reverse Voltage Per Dot
5
-35℃ to +85℃
Operating Temperature Range
V
-35℃ to +85℃
Storage Temperature Range
Solder Temperature: max 260℃ for max 3sec at 1.6mm[1/16inch] below seating plane.
ELECTRICAL / OPTICAL CHARACTERISTICS AT Ta=25oC
PARAMETER
SYMBOL MIN. TYP. MAX. UNIT TEST CONDITION
Average Luminous Intensity
IV
2100 4600
µcd
Ip=32mA 1/16Duty
Peak Emission Wavelength
λp
621
nm
IF=20mA
Spectral Line Half-Width
∆λ
18
nm
IF=20mA
Dominant Wavelength
λd
615
nm
IF=20mA
Forward Voltage any Dot
VF
Reverse Current any Dot
IR
100
IV-m
2:1
Luminous Intensity Matching Ratio
2.05
2.6
2.3
2.8
V
µA
IF=20mA
IF=80mA
VR=5V
Ip=32mA 1/16Duty
Note: Luminous intensity is measured with a light sensor and filter combination that
approximates the CIE (Commision Internationale De L’Eclairage) eye-response curve.
PART NO.: LTP-2157AKA
BNS-OD-C131/A4
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LITE-ON ELECTRONICS, INC.
Property of Lite-On Only
TYPICAL ELECTRICAL / OPTICAL CHARACTERISTIC CURVES
(25oC Ambient Temperature Unless Otherwise Noted)
PART NO.: LTP-2157AKA
BNS-OD-C131/A4
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