LT8620EMSE # TRPBF
IBIKURIKIRA
Umuyoboro Mugari Winshi: 3.4V kugeza 65V
Ultralow Quiescent Yubu Iturika Mode® Igikorwa:
2.5μA IQ Igenga 12VIN kugeza 3.3VOUT
Ibisohoka bisohoka <10mVP-P
Igikorwa Cyiza Cyiza Igikorwa:
94% Gukora neza kuri 1A, 12VIN kugeza 5VOUT
92% Gukora neza kuri 1A, 12VIN kugeza 3.3VOUT
Byihuta 30ns Ntarengwa Guhindura-Igihe
Ibitonyanga bito mubihe byose: 250mV kuri 1A
Ihangane neza Kwiyuzuza Inductor Kurenza
EMI yo hasi
Guhindura no guhuza: 200kHz kugeza kuri 2.2MHz
Nukuri 1V Gushoboza Pin Threshold
Indishyi zimbere
Ibisohoka Byoroheje-Gutangira no Gukurikirana
Gitoya Yongerewe 16-Iyobora MSOP na 24-Isonga 3mm × 5mm QFN
GUSABA
Ibinyabiziga n'ibikoresho byo mu nganda
Intego rusange Intambwe-Hasi
Amashanyarazi ya GSM
GUSOBANURIRA
LT®8620 nuburyo bworoshye, bukora neza, bwihuta bwihuta bwa monolithic intambwe-hasi ihinduranya igenzura ryakira amashanyarazi yagutse kugeza kuri 65V, kandi ikoresha 2.5µAofquiescent.Topandbottom power switch yashyizwemo nibisabwa byose byumuzunguruko kugirango ugabanye ibikenewe hanze.Igikorwa gito cya Burst Mode ikora ituma gukora neza cyane kugeza kumasoko make cyane mugihe ibintu bisohoka munsi ya 10mVP-P.SYNC pin yemerera guhuza isaha yo hanze.Indishyi zimbere hamwe na top ya moderi ya topologiya yemerera gukoresha inductors ntoya kandi ibisubizo mubisubizo byihuse kandi bihamye neza.PIN ya EN / UV ifite 1V ntarengwa kandi irashobora gukoreshwa muri progaramuVIN munsi ya volvoltage yo gufunga orto guhagarika LT8620 igabanya ibyinjira byinjira kuri 1µA.Ubushobozi bwa porogaramu ya TR / SS pin isohoka umuvuduko wa voltage umuvuduko mugihe cyo gutangira.Ibendera rya PG ryerekana iyo VOUT iswithin ± 9% yumusaruro washyizweho na voltage nkibisanzwe.LT8620 iraboneka muri 16-Yayoboye MSOP na 3mm × 5mmQFNipaki hamwe nudupapuro twerekanwe kubushyuhe buke.
LT8620 ni monolithic, inshuro nyinshi, uburyo bugezweho kumanuka DC / DC.Oscillator, hamwe numurongo washyizweho ukoresheje rezistor kuri pin ya RT, ifungura amashanyarazi yo hejuru imbere mugitangiriro cya buri saha.Ibiriho muri inductor noneho byiyongera kugeza hejuru yo guhinduranya ingendo igereranya ingendo hanyuma ikazimya amashanyarazi yo hejuru.Impanuka ya inductor yumuyaga aho hejuru yo kuzimya igenzurwa na voltage kumurongo wimbere.Ikosa amplifier servos ya VC mugereranya voltage kuri pin ya VFB hamwe na 0.97V y'imbere.Iyo imizigo yimitwaro yiyongereye itera kugabanuka kumashanyarazi ya voltage ugereranije nibisobanuro biganisha ku ikosa ryongera imbaraga kugirango uzamure VC voltageuntilthe impuzandengo ya inductor igereranya nu mutwaro wubu.Iyo amashanyarazi yo hejuru azimye, syncron power power irafungura kugeza isaha ikurikira izatangira cyangwa inductor igwa kuri zeru.Niba ibintu birenze urugero bivamo ibirenga 3.9A bitembera mumahinduka yo hepfo, ukwezi kuzakurikiraho bizatinda kugeza igihe amashanyarazi azagaruka kurwego rwumutekano.
Incamake
LT3650is yuzuye, imbaraga-hagati, charger ya Li-Ionbattery, ikemura ibibazo byinshi byinjira mumashanyarazi hamwe nibisubizo bikoresha byibuze ibice byo hanze.IC ikoresha 1MHz ihoraho-inshuro, impuzandengo yuburyo bugezweho-hasi yubatswe.
LT3650 ikubiyemo icyerekezo cya 2A kiyobowe na bootstrappedsupplytomaximizeefficiencyduringcharging cycle.Urwego runini rwinjiza rutuma ibikorwa byuzuzwa kuva 9V kugeza 32V.Icyerekezo ntarengwa cyo guhagarika pin yemerera kwinjiza imikorere ya UVLO ukoresheje ibintu byoroshye bigabanya.IC irashobora kandi gushirwa muburyo buke bwo guhagarika uburyo, aho kwinjiza kubogama kugabanuka kugera kuri 15µA gusa.
LT3650 ihuza ibice byubwisanzure bwo kugenzura ubu.Igiteranyo ntarengwa cyo kwishyurwa gishyirwaho ukoresheje inductor yo hanze yimyumvire irwanya.Umubare ntarengwa wogukora progaramu ya pin yemerera gukoresha imbaraga za bateri yumuriro.LT3650 ikubiyemo kandi uburyo bwo kwinjiza sisitemu yo kugenzura imipaka igabanya imipaka ikoreshwa na bateri yumuriro kugirango ihuze ibisabwa muri sisitemu.
