LM40044AB LIGHTKEY | Alldatasheet
Document overview
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Technical content
Features
¾ 108.80 mm (4.00 inch) digit high ¾ Dot size: Diameter 20.00 mm ¾ Pitch: 27.20 mm ¾ Wide viewing angle ¾ Range of emitted colors ¾ I.C. compatible ¾ Low power consumption ¾ White dot, grey or black face Available options ¾ Alternative emitting luminosity: Standard or high brightness version ¾ Alternative emitted color ¾ Alternative dot color ¾ Alternative face ¾ Both CC and CA versions are available ¾ Cropped terminal pins ¾ RoHS compliant Package Dimensions 5.08×3=15.24 Ø0.80 6.49 0.71 12 3 4 COL. ROW 27.2×3=81.6 6.18=3×2.72 108.8(4.35 ) )53.4(8.801 Ø20.0(0.80 ) PIN 1 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: DS10121844 REV : A.4 CHECKE D: Emily Zhou APPROVED: M.H. Lin P AGE: 2/3 HTTP://WWW.LTKEY.COM TEL: 0086-574-86322282 DA TE: Jul/20/2011 Datasheet of 4.00 inch 4x4 Dot Matrix LED Display Internal Circuit Diagram LM40044A (Common Cathode Row) LM40044B (Common Anode Row) 8 87 73 34 4 1 12 23 34 4 5 5 6 6 2 2 1 1 1 1 2 2 3 3 4 4 PIN NO. PIN NO. PIN NO. PIN NO. .LOC .LOC Selection Guide Part No. Chip IV@IF=20mA One Dot Common Cathode Row Common Anode Row Material Color WLD Min. Typ. LD40 044AR LD40 044BR GaAlAs Super Red 640 24 30 LD40 044AD LD40 044BD GaAlAs Hi-Red 640 54 75 LD40 044AO LD40 044BO GaAsP Orange 625 21 27 LD40 044AY LD40 044BY GaAsP Yellow 588 24 30 LD40 044AG LD40 044BG GaP Green 568 21 27 LD40 044AUR LD40 044BUR AlGaInP Ultra Red 640 90 135 LD40 044AUO LD40 044BUO AlGaInP Ultra Orange 625 135 180 LD40 044AUA LD40 044BUA AlGaInP Ultra Amber 605 90 135 LD40 044AUY LD40 044BUY AlGaInP Ultra Yellow 595 90 135 LD40 044AUG LD40 044BUG AlGaInP Ultra Green 573 90 135 LD40 044APG LD40 044BPG InGaN Pure Green 525 360 900 LD40 044AUB LD40 044BUB InGaN Ultra Blue 470 90 135 LD40 044AUW LD40 044BUW SMD Ultra White \\ 300 360 Unit: \\ \\ \\ nm mcd mcd
SPEC NO: DS10121844 REV: A.4 CHECKED: Emil y Zhou APPROVED: M.H. Lin PAGE: 3/3 HTTP://WWW.LTKEY.COM TEL: 0086-574-86322282 DATE: Jul/20/2011 Datasheet of 4.00 inch 4x4 Dot Matrix LED Display Electrical Characteristics & Absolute Maximum Ratings Parameter Electrical optical Characteristics[1] Absolute Maximum Ratings[1] VF@ IF=20mA[2] Emitted Color Per Dot Typ. Max. Reverse Current VR=5V Power Dissipation DC Forward Current Peak Forward Current[3] Super Red Per Dot 7.2 8.8 50 240 25 100 Hi-Red Per Dot 7.2 8.8 50 240 25 100 Orange Per Dot 8.4 10 50 320 30 100 Yellow Per Dot 8.4 10 50 320 30 100 Green Per Dot 8.8 10 50 320 30 100 Ultra Red Per Dot 7.6 10.4 50 240 30 100 Ultra Orange Per Dot 8 10.4 50 260 30 100 Ultra Amber Per Dot 8 10.4 50 260 30 100 Ultra Yellow Per Dot 8 10.4 50 260 30 100 Ultra Green Per Dot 8.4 10.4 50 300 30 100 Pure Green Per Dot 14 16 50 440 30 100 Ultra Blue Per Dot 14 16 50 480 30 100 Ultra White Per Dot 14 16 50 480 30 100 Unit: \\ V V uA mW mA mA N o t e s : 1. At Ta = 25 °C. 2. Forward voltage at forward current = 20mA. 3. Peak forward current at 1/10 Duty Cycle, 0.1ms Pulse.