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| electronic giant EG2808 ??? 2012 ? ???? ? rev 1.0 ???
???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 2 / 10 ? v1.0 201 2 11 05 EG2808 ?? ???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 3 / 10 ?? 1. ? ................................ ................................ ................................ ................................ ................................ ..... 4 2. ................................ ................................ ................................ ................................ ................................ ..... 4 3. ? ................................ ................................ ................................ ................................ ............................. 4 4. ................................ ................................ ................................ ................................ ................................ ..... 5 4.1. ? ................................ ................................ ................................ ................................ ............. 5 4.2. ................................ ................................ ................................ ................................ ............. 5 5. ?? ................................ ................................ ................................ ................................ ............................. 6 6. ?? ................................ ................................ ................................ ................................ ..................... 6 7. ................................ ................................ ................................ ................................ ............................. 7 7.1 ? ................................ ................................ ................................ ................................ ............. 7 7.2 ................................ ................................ ................................ ................................ ............. 7 8. ? ................................ ................................ ................................ ................................ ............................. 8 8.1 ?? ................................ ................................ ................................ ................................ ............. 8 8.2 ? ................................ ................................ ................................ ................................ ............. 8 9. ? ? ................................ ................................ ................................ ................................ ........................... 10 9.1 sop8 ?? ................................ ................................ ................................ ................................ .. 10 ???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 4 / 10 EG2808 ? ?? 1. ? ? 2.5v 5.5v ? < 15 0u a ? ? 10 ua ? +/ - 100ma ? opt1 opt2 4 ?? ?? ? ? ? ? ? sos ? ? pmos led ??? ? led ? ?? ?? ? ?? sop8 2. EG2808 ? ? l ed ?? ??? ?????? ?? 2.5v 5.5v EG2808 ? sos ? opt1 opt2 ?????? ? ? led1 led4 ? pmos 3w 3w led ? 3. ? ? ? led ?? ? led ?? ? led ? led ? ???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 5 / 10 4. 4.1. ? ? 4 - 1. EG2808 ?? 4.2. i/o 1 gnd gnd ?? 2 opt1 i ??? 1 3 opt2 i ??? 2 4 vdd power ????? 2.5v 5.5v 5 led1 o ? 1 +/ - 100ma 6 led2 o ? 2 +/ - 100ma 7 led3 o ? 3 +/ - 100ma 8 led4 o ? 4 +/ - 100ma g n d v d d l e d 1 l e d 2 l e d 3 e g 2 8 0 8 1 2 3 4 5 6 7 8 o p t 1 o p t 2 l e d 4 ???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 6 / 10 5. ?? ? 5 - 1. EG2808 ?? 6. ?? ? 6 - 1. EG2808 ??? - pmos ? 5 7 8 l e d 1 6 1 3 2 4 v d d g n d ? ? ? ? ? ? l e d 2 l e d 3 l e d 4 o p t 1 o p t 2 0 r1 1 r2 nc r3 nc r4 nc r5 47 c1 4.7uf 0 u1 EG2808 gnd 1 opt1 2 opt2 3 vdd 4 led1 5 led2 6 led3 7 led4 8 led1 led 0 bt1 3.7v 0 s1 on/off q1 mem2309 s2 opt 1 2 4 3 ???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 7 / 10 7. 7.1 ? ? t a = 25 v dd ?? - - 0.3 7 v v in ? - - 0. 3 v dd v v out ? - - 0. 3 7 v t j - - 1 50 t a ?? - - 45 85 tstr ? - - 65 1 50 tl ? t= 5 s - 260 ???????????????? 7.2 ? t a = 25 vdd = 4 v ? ? v dd - 2 .5 3.6 5.5 v icc vdd=4v ? i q vdd<2.3v led1 i o + vout= i o - vout= i o + vout= i o - vout= i o + vout= i o - vout= i o + vout= i o - vout= ???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 8 / 10 8. ? 8.1 ?? ??? opt1 pin2 opt2 (pin3) ?? 0 y ? 0 y ? ?? 1 - 5 ? led ??? 1 0 y ? ?? 2 - 4 ? led ??? 0 y ? 1 ?? 3 - 3 led ?? 1 1 ?? 4 - 3 ? led ?? 8.2 ? ?? 1 opt1=0 otp2=0 5 ? led ??? led1 led4 ??? 100% led1 led4 ??? ?? 1 ? ? led1 100% 25% 2hz 6.8hz sos led2 100% 5 0 % 25% 6.8hz sos led3 100% 5 0 % 25% 2hz 6.8hz led4 25% 100% 2hz 6.8hz sos ?? 2 opt1=1 otp2=0 4 ? led ??? led1 led4 ??? 100% led1 led4 ??? ?? ? ? ???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 9 / 10 ?? 3 opt1=0 otp2=1 3 led ?? led1 led4 ??? 100% led1 led4 ??? ?? ? ? ? ? ?? 4 opt1= 1 otp2=1 3 ? led ?? led1 led4 ??? 100% led1 led4 ??? ?? ? ???? ? ? ? ??? 2012 ? ???? ? www.egmicro.com 1 0 / 10 9. ? ? 9.1 so p 8 ?? |
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