2-30 preliminary 0.4" blue led numeric displays lts-4x01b ltd-4000b series ltc-4000b features 0.4 inch (10.0mm) digit height continuous uniform segments. low power requirement. excellent characters appearance. solid state reliability. wide viewing angle. categorized for luminous intensity. i.c. compatiable. easy mounting on p.c. board or socket. description the lts-4x01b, ltd-4000b, ltc-4000b series are 0.4 inch (10.0mm) height seven segment single, dual, triple and quadruple digit displays. the blue series devices utilize led chips which are made from gan on a sic substrate. the devices have gray face and white segments. package dimensions a.lts-4301b/4801b b.ltd-4608b/4708b notes:all dimensions are in millimeters (inches). tolerance: 0.25mm ( 0.01") unless otherwise noted. c.ltc-4624b/4724b d.ltc-4627b/4727b
2-31 blue products preliminary devices part no. description package dimension internal circuit diagram blue lts-4301b lts-4801b ltd-4608b ltd-4708b ltc-4624b ltc-4724b ltc-4627b LTC-4727B common cathode, rt. hand decimal common anode, rt. hand decimal dualplex common anode, rt. hand decimal dualplex common cathode, rt. hand decimal multiplex common anode, rt. hand decimal multiplex common cathode, rt. hand decimal multiplex common anode, rt. hand decimal common common cathode, rt. hand decimal a a b b c c d d a b c d e f g h pin connection pin no. connection a.lts-4301b b.lts-4801b 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. pin no. connection c.ltd-4608b d.ltd-4708b 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. anode g anode f common cathode anode e anode d anode d.p. anode c common cathode anode b anode a cathode g cathode f common anode cathode e cathode d cathode d.p. cathode c common anode cathode b cathode a cathode c cathode d.p. cathode e common anode digit 2 cathode d cathode f cathode g cathode b common anode digit 1 cathode a anode c anode d.p. anode e common cathode digit 2 anode d anode f anode g anode b common cathode digit 1 anode a
2-32 preliminary internal circuit diagrams a.lts-4301b b.lts-4801b pin no. connection g.ltc-4627b h.LTC-4727B 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. pin no. connection e.ltc-4624b f.ltc-4724b 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. c.ltd-4608b d.ltd-4708b common anode digit 1 cathode e cathode c, l3 cathode d common anode digit 2 cathode d.p. common anode digit 3 cathode g no pin no pin cathode b, l2 cathode a, l1 no pin common anode l1, l2, l3 cathode f common cathode digit 1 anode e anode c, l3 anode d common cathode digit 2 anode d.p. common cathode digit 3 anode g no pin no pin anode b, l2 anode a, l1 no pin common cathode l1, l2, l3 anode f common anode digit 1 common anode digit 2 cathode d common anode l1, l2, l3 cathode e common anode digit 3 cathode d.p. common anode digit 4 no connection no pin cathode f no pin cathode c, l3 cathode a, l1 cathode g cathode b, l2 common cathode digit 1 common cathode digit 2 anode d common cathode l1, l2, l3 anode e common cathode digit 3 anode d.p. common cathode digit 4 no connection no pin anode f no pin anode c, l3 anode a, l1 anode g anode b, l2
2-33 blue products preliminary e.ltc-4624b f.ltc-4724b g.ltc-4627b h.LTC-4727B blue unit power dissipation per segment peak forward current per segment (1/10 duty cycle, 0.1ms pulse width) continuous forward current per segment derating linear from 25 per segment reverse voltage per segment operating temperature range stroage temperature range solder temperature 1/16 inch below seating plane for 3 seconds at 260 65 60 15 0.2 5 mw ma ma ma/ v -35 to +85 -35 to +85 absolute maximum rating at ta=25 parameter electrical/optical characteristics at ta=25 parameter symbol min. typ. max. unit test condition average luminous intensity peak emission wavelength spectral line half-width dominant wavelength forward voltage, per segment reverse current, per segment luminous intensity matching ratio i v p d v f i r i v -m 1200 3600 428 65 466 3.8 cd nm nm nm v a 4.5 100 2:1 i f =10ma i f =20ma i f =20ma i f =20ma i f =20ma v r =5v i f =10ma notes:luminous intensity is measured with a light sensor and filter combination that appoximates the cie (commission internationale de l'eclairage)eye-response curve.
2-34 preliminary typical electrical/optical characteristic curves (25 ambient temperature unless otherwise noted)
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