LITE-ON TECHNOLOGY CORPORATION Property of LITE-ON Only FEATURES ＊2.0 inch (50.8 mm) MATRIX HEIGHT ＊LOW POWER REQUIREMENT ＊EXCELLENT CHARACTERS APPEARANCE ＊HIGH BRIGHTNESS & HIGH CONTRAST ＊5×7 ARRAY WITH X-Y SELECT ＊HIGH BRIGHTNESS & HIGH CONTRAST ＊SOLID STATE RELIABILITY DESCRIPTION The LTP-2157AKY-01 is a 2.0 inch (50.8 mm) matrix height 5×7 dot matrix display. This device uses AS-AlInGaP AMBER YELLOW LED chips (AlInGaP epi on GaAs substrate). The display has a black face and white dot color. DEVICE PART NO. DESCRIPTION AlInGaP AMBER YELLOW Cathode Column Anode Row LTP-2157AKY-01 PART NO.: LTP-2157AKY-01 BNS-OD-C131/A4 PAGE: 1 of 5 LITE-ON TECHNOLOGY CORPORATION 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-2157AKY-01 BNS-OD-C131/A4 PAGE: 2 of 5 LITE-ON TECHNOLOGY CORPORATION Property of LITE-ON Only PIN CONNECTION No. 1 ANODE ROW 5 2 ANODE ROW 7 3 CATHODE COLUMN 2 4 CATHODE COLUMN 3 5 6 ANODE ROW 4 CATHODE COLUMN 5 7 ANODE ROW 6 8 ANODE ROW 3 9 ANODE ROW 1 10 CATHODE COLUMN 4 11 CATHODE COLUMN 3 12 13 14 PART NO.: LTP-2157AKY-01 BNS-OD-C131/A4 CONNECTION ANODE ROW 4 CATHODE COLUMN 1 ANODE ROW 2 PAGE: 3 of 5 LITE-ON TECHNOLOGY CORPORATION Property of LITE-ON Only ABSOLUTE MAXIMUM RATING PARAMETER MAXIMUM RATING UNIT Average Power Dissipation Per Dot 35 mW Peak Forward Current Per Dot ( Frequency 1Khz, 25% duty cycle ) 60 mA Average Forward Current Per Dot Forward Current From 25℃ 13 0.17 mA mA/℃ Reverse Voltage Per Dot 5 -35℃ to +85℃ Operating Temperature Range V -35℃ to +85℃ Storage Temperature Range Soldering Conditions:1/16 inch below seating plane for 3 seconds at 260℃ ELECTRICAL / OPTICAL CHARACTERISTICS AT Ta = 25oC PARAMETER SYMBOL MIN TYP MAX UNIT TEST CONDITION µcd Ip = 32mA 1/16Duty Average Luminous Intensity Per Dot IV 1650 3600 Peak Emission Wavelength λp 595 nm IF = 20mA Spectral Line Half-Width ∆λ 15 nm IF = 20mA Dominant Wavelength λd 592 nm IF = 20mA Forward Voltage Per Segment 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-2157AKY-01 BNS-OD-C131/A4 PAGE: 4 of 5 LITE-ON TECHNOLOGY CORPORATION Property of LITE-ON Only TYPICAL ELECTRICAL / OPTICAL CHARACTERISTIC CURVES (25oC Ambient Temperature Unless Otherwise Noted) PART NO.: LTP-2157AKY-01 BNS-OD-C131/A4 PAGE: 5 of 5