lightkey spec no: ds10121583 rev: a.4 checked: emil y zhou approved: m.h. lin page: 1/3 http://www.ltkey.com tel: 0086-574-86322282 date: jul/20/2011 datasheet of 0.70 inch 5x7 dual color dot matrix led display lm7057a/brg series - 0.70 inch 5x7 dual color dot matrix led display features ? 17.80mm (0.70inch) digit high ? dot size: diameter 1.90mm ? pitch: 2.54mm ? wide viewing angle ? emitting colors: red-green ? i.c. compatible ? low power consumption ? white segment ? rohs compliant package dimensions 4 0 . 5 1 = 8 8 8 . 1 ?0.50 7.62 3 . 6 1 1 2 3 4 5 6 7 2 345 col . row 2.544=10.16 4 2 . 5 1 = 6 4 5 . 2 12.7(0.50 ) ) 1 7 . 0 ( 8 . 7 1 19 07 ? . 0(0. ) pi n 1 notes: 1. all dimensions are in millimeters (inches), tolerance is + 0.25mm (0.01inch) unless other wise noted. 2. specifications are subj ect to change without notice. 3. the gap between the reflector and pcb shall not exceed 0.25mm. attention observe precautions for handling electrostatic discharge sensitive devices available options ? alternative emitting luminosity: standard or high brightness version ? alternative emitted color ? alternative segment color ? alternative font ? common cathode is available ? cropped terminal pins
lightkey spec no: ds10121583 rev: a.4 checked: emil y zhou approved: m.h. lin page: 2/3 http://www.ltkey.com tel: 0086-574-86322282 date: jul/20/2011 datasheet of 0.70 inch 5x7 dual color dot matrix led display internal circuit diagram lm7057arg (common cathode row) lm7057brg (common anode row) code n 3 3 8 8 1 1 6 1 6 1 0 1 0 1 9 9 5 5 7 1 7 1 3 1 3 1 2 1 2 1 12345 8 1 8 1 2 2 5 1 5 1 4 1 4 1 6 6 7 7 1 1 1 1 1 2 3 4 5 6 7 pi n no. pi n no. col. code m 12345 1 2 3 4 5 6 7 pi n no. pi n no. col. red green selection guide 0.70 inch 5x7 red-green led dot matrix module, matrix height: 17.80mm(0.70 inch), external dimensions: 17.80x12.70x6.30mm (l x w x h) part no. chip iv(mcd)@20ma one dot description common cathode row common anode row material color w ld (nm) min. typ. gaalas super red 640 8 10 standard brightness lm7057arg lm7057brg gap green 568 7 9 algainp ultra red 640 30 45 ultra-high brightness lm7057aurug lm7057burug algainp ultra green 573 30 45
lightkey spec no: ds10121583 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 0.70 inch 5x7 dual color dot matrix led display electrical characteristics & abso lute maximum ratings per dot electrical optical characteristics [1] absolute maximum ratings [1] forward voltage(v) @ if=20ma color typ. max. reverse current vr=5v (ua) power dissipation (mw) dc forward current (ma) peak forward current [2] (ma) reverse voltage (v) super red 1.8 2.2 30 60 25 100 5 green 2.2 2.5 30 80 30 100 5 ultra red 1.9 2.6 30 60 30 100 5 ultra green 2.1 2.6 30 75 30 100 5 operating/ storage temp.: -40 to +80 deg.; lead solder temp.: 260 deg. for 3-5 sec. 2mm below package base 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.
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