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| electronic giant EG1185 ??? ??? 201 7 ? ???? ? rev 1.0
???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 1 / 1 ? v1.0 2017 0 4 19 EG1185 ? ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 1 / 1 ? ? 1. ................................ ................................ ................................ ................................ ................................ ..... 1 2. ................................ ................................ ................................ ................................ ................................ ..... 1 3. ? ................................ ................................ ................................ ................................ ............................. 1 4. ................................ ................................ ................................ ................................ ................................ ..... 2 4.1 ? ................................ ................................ ................................ ................................ ................... 2 4.2 ................................ ................................ ................................ ................................ ................... 2 5. ?? ................................ ................................ ................................ ................................ ............................. 3 6. ?? ................................ ................................ ................................ ................................ ..................... 4 7. ................................ ................................ ................................ ................................ ............................. 5 7.1 ? ................................ ................................ ................................ ................................ ................... 5 7.2 ? ................................ ................................ ................................ ................................ ................... 6 7.3 ................................ ................................ ................................ ................................ ................... 7 8. ?? ................................ ................................ ................................ ................................ ............................. 8 8.1 sot23 - 6 ?? ................................ ................................ ................................ ................................ ..... 8 ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 1 / 8 EG1185 ?? 1. ? ???? ? pwm/pfm ?? ? ??? ? < 15 0mw ? 4% ? ? ?????? ? ? ? ? sot23 - 6 2. EG1185 ? ?????? nmos ? 20v - 600v ?? EG1185 ???????????? ????? EG1185 ?? vdd ?? vdd ? 3. ? ? ? ? ? ? ??? ? ???? ? ? led ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 2 / 8 4. 4.1 ? ? 4 - 1. EG1185 ?? 4.2 1 gnd ? 2 gate ? mosfet ? 3 cs 4 fb ? 5 gnd ? 6 vdd ??? e g 1 1 8 5 1 2 3 5 4 6 ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 3 / 8 5. ?? ? 5 - 1. EG1185 ?? v d d o s c c s g n d u v l o f b v r e f = 2 v g a t e 6 3 2 1 4 v r e f = 0 . 7 v g n d 5 ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 4 / 8 6. ?? ? 6 - 1. EG1185 12v ?? ? 6 - 2. EG1185 5v ?? ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 5 / 8 ? 6 - 3. EG1185 led ?? 7. 7.1 ? ? vdd ?? 30 v gate 20 v cs,sel ? - 0.3 ~ 7 v fb ? - 0.7 ~ 7 v sot - 26 ? 250 /w ? 150 ? - 40 ~ 125 ? - 65 ~ 150 ? 260 ???????????????? ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 6 / 8 7.2 ? ? t a = 25 ?? vdd ivdd_st 3 15 ua vdd_op v(fb)=3v,gate=0.5nf vdd=20v 1 1.5 ma ivdd_standby 0.5 1.5 ma ? vdd ?? ? vdd_on 15 16 17.5 v vdd ?? ? vdd_off 8 9 10 v ? ?? ? vfb_ref 1.97 2.0 2.03 v ? ? vcs(max) 490 500 510 mv ? gate ?? vg_clamp vdd=24v 16 v ? t_r gate=0.5nf 700 ns ?? t_f gate=0.5nf 40 ns ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 7 / 8 7.3 ? 7 - 1. ? vdd ??? vs ? ? 7 - 2. vdd ??? vs ? ? 7 - 3. ?? ? vs ? ? 7 - 4. ? vs ? ???? EG1185 ?? ??? 2017 ? ???? ? www.egmicro.com 8 / 8 8. ?? 8.1 sot23 - 6 ?? |
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