LightKey Datasheet of 2.00 inch 5x7 Square Dot Matrix LED Display LM20157A/B Series – 2.00 inch 5x7 Dot Matrix LED Display ATTENTION OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES Features Available options ¾ 53.10mm (2.00 inch) digit high ¾ ¾ Dot size: 6x6 mm ¾ Pitch: 7.62mm ¾ Wide viewing angle ¾ Range of emitted colors ¾ I.C. compatible ¾ Low power consumption ¾ White dot, grey or black face ¾ RoHS compliant Alternative emitting luminosity: Standard or high brightness version ¾ ¾ ¾ ¾ ¾ Alternative emitted color Alternative dot color Alternative face Both CC and CA versions are available Cropped terminal pins Package Dimensions 3 8. 1 0 7 . 62 × 6= 4 5. 7 2 53 . 1( 2 . 1 2 ) 6.0(0.24 ) 7.62×4=30.48 37.8(1.51 ) COL. ROW 1 1 2 3 4 5 8. 5 2 3 4 Ø0.60 5 6 2.54×6=15.24 7 Notes: 1. All dimensions are in millimeters (inches), Tolerance is + 0.25mm (0.01inch) unless other wise noted. 2. Specifications are subject to change without notice. 3. The gap between the reflector and PCB shall not exceed 0.25mm. SPEC NO: DS10121830 REV: A.4 HTTP://WWW.DISPLAY-LEDS.COM CHECKED: Emily Zhou APPROVED: M.H. Lin TEL: 0086-574-86322282 PAGE: 1/3 DATE: Jul/20/2011 LightKey Datasheet of 2.00 inch 5x7 Square Dot Matrix LED Display Internal Circuit Diagram LM20157A (Common Cathode Row) COL. 1 ROW PIN NO. PIN NO. 13 2 3 4 5 3 4 11 10 6 LM20157B (Common Anode Row) COL. ROW PIN NO. PIN NO. 1 9 1 9 2 14 2 14 3 8 3 8 4 5 12 4 5 12 5 1 5 1 6 7 6 7 7 2 7 2 1 2 3 4 5 13 3 4 11 10 6 Selection Guide Part No. Chip Common Common Cathode Row Anode Row Material Iv@IF=20mA Color One Dot WLD Min. Typ. LM20157AR LM20157BR GaAlAs Super Red 627 8 10 LM20157AD LM20157BD GaAlAs Hi-Red 627 18 25 LM20157AO LM20157BO GaAsP Orange 610 7 9 LM20157AY LM20157BY GaAsP Yellow 588 8 10 LM20157AG LM20157BG GaP Green 568 7 9 LM20157AUR LM20157BUR AlGaInP Ultra Red 627 30 45 LM20157AUO LM20157BUO AlGaInP Ultra Orange 610 45 60 LM20157AUA LM20157BUA AlGaInP Ultra Amber 605 30 45 LM20157AUY LM20157BUY AlGaInP Ultra Yellow 595 30 45 LM20157AUG LM20157BUG AlGaInP Ultra Green 573 30 45 LM20157APG LM20157BPG InGaN Pure Green 525 120 300 LM20157AUB LM20157BUB InGaN Ultra Blue 470 30 45 LM20157AUW LM20157BUW InGaN Ultra White \ 100 120 Unit: \ \ \ nm mcd mcd SPEC NO: DS10121830 REV: A.4 HTTP://WWW.DISPLAY-LEDS.COM CHECKED: Emily Zhou APPROVED: M.H. Lin TEL: 0086-574-86322282 PAGE: 2/3 DATE: Jul/20/2011 LightKey Datasheet of 2.00 inch 5x7 Square Dot Matrix LED Display Electrical Characteristics & Absolute Maximum Ratings Electrical Absolute Maximum Ratings[1] [1] Characteristics Color VF@ Reverse IF=20mA[2] Current Typ. Max. VR=5V Power Dissipation DC Peak Forward Forward Current Current[3] Super Red Per Dot 1.8 2.2 30 60 25 100 Hi-Red Per Dot 1.8 2.2 30 60 25 100 Orange Per Dot 2.1 2.5 30 80 30 100 Yellow Per Dot 2.1 2.5 30 80 30 100 Green Per Dot 2.2 2.5 30 80 30 100 Ultra Red Per Dot 1.9 2.6 30 60 30 100 Ultra Orange Per Dot 2.0 2.6 30 65 30 100 Ultra Amber Per Dot 2.0 2.6 30 65 30 100 Ultra Yellow Per Dot 2.0 2.6 30 65 30 100 Ultra Green Per Dot 2.1 2.6 30 75 30 100 Pure Green Per Dot 3.5 4.0 30 110 30 100 Ultra Blue Per Dot 3.5 4.0 30 120 30 100 Ultra White Per Dot 3.5 4.0 30 120 30 100 Unit: \ V V uA mW mA mA Notes: 1. At Ta = 25 °C. 2. Forward voltage at forward current = 20mA. 3. Peak forward current at 1/10 Duty Cycle, 0.1ms Pulse. SPEC NO: DS10121830 REV: A.4 HTTP://WWW.DISPLAY-LEDS.COM CHECKED: Emily Zhou APPROVED: M.H. Lin TEL: 0086-574-86322282 PAGE: 3/3 DATE: Jul/20/2011