LT8620EMSE#TRPBF
Atụmatụ
Oke ntinye voltaji obosara: 3.4V ruo 65V
Ọrụ Ultralow Quiescent ugbu a Burst Mode®:
2.5μA IQ Na-achịkwa 12VIN ruo 3.3VOUT
Mpụta Ripple <10mVP-P
Ịrụ ọrụ mmekọrịta dị elu:
94% arụmọrụ na 1A, 12VIN ruo 5VOUT
92% arụmọrụ na 1A, 12VIN ruo 3.3VOUT
Ngwa ngwa 30ns kacha nta ngbanwe oge
Ọpụpụ dị ala n'okpuru ọnọdụ niile: 250mV na 1A
Na-anabata Saturation Inductor nke ọma na oke ibu
EMI dị ala
Enwere ike idozi yana mekọrịta: 200kHz ruo 2.2MHz
1V ziri ezi Kwado ọnụ ala pin
Nkwụghachi n'ime
Mpụta Soft-Malite na nsochi
16-Lead MSOP na 24-edu 3mm × 5mm QFN ngwugwu.
Ngwa
Ngwa ụgbọ ala na ụlọ ọrụ mmepụta ihe
Ebumnuche izugbe gbadata
Ngwa ike GSM
Nkọwa
LT®8620 bụ kọmpat, arụmọrụ dị elu, onye na-ahụ maka mgbanwe mgbanwe mgbada monolithic nke na-anabata oke ntinye voltaji ruo 65V, yana na-eri 2.5µAofquiescent ugbu a.A na-etinye ọkụ ọkụ elu na ala na sekit niile dị mkpa iji wedata mkpa maka akụrụngwa mpụga.Arụ ọrụ mgbawa dị ala na-enyere aka ịrụ ọrụ dị elu ruo oke mmepụta dị ala ka ị na-edobe ihe nrụpụta n'okpuru 10mVP-P.Ntụtụ SYNC na-enye ohere ịmekọrịta na elekere mpụga.Nkwụghachi ụgwọ nke ime ya na topology mode dị ugbu a na-enye ohere iji obere inductor na-ebute nzaghachi ngwa ngwa na-adịru nwa oge yana nkwụsi ike dị mma.Ntụtụ EN/UV nwere ọnụ ụzọ 1V ziri ezi ma enwere ike iji ya mee VIN n'okpuru mgbachi mkpọchi ma ọ bụ mechie LT8620 na-ebelata ntinye ntinye ugbu a na 1µA.A capacitor na TR/SS pin mmemme na-arụpụta voltaji ramp ọnụego n'oge mmalite.Ọkọlọtọ PG na-egosi mgbe VOUT dị n'ime ± 9% nke voltaji mmepụta akwadoro yana ọnọdụ mmejọ.LT8620 dị na obere 16-Lead MSOP na ngwugwu 3mm × 5mmQFN nwere paịlị ekpughere maka nkwụsị ọkụ dị ala.
LT8620 bụ monolithic, ugboro ugboro, ọnọdụ dị ugbu a gbadara DC/DC ntụgharị.Ihe oscillator, nke nwere usoro ugboro ugboro site na iji resistor na pin RT, na-agbanye mgba ọkụ dị n'ime n'isi mmalite nke okirikiri elekere ọ bụla.Ugbu a na inductor na-abawanye ruo mgbe ngbanwe elu nke ugbu a comparator na-eme njem ma gbanyụọ mgba ọkụ n'elu.Ọnụ ọgụgụ inductor dị ugbu a nke mgba ọkụ elu na-agbanyụ na-achịkwa voltaji dị na oghere VC dị n'ime.Igwe nkwuputa njehie na-arụ ọrụ ọnụ VC site na iji voltaji na pin VFB na ntụnye aka 0.97V dị n'ime.Mgbe ibu dị ugbu a na-abawanye, ọ na-eme ka mbelata na voltaji nzaghachi metụtara ntụaka na-eduga amplifier njehie na-ebuli voltaji VC ruo na nkezi inductor ugbu a na-adaba na ibu ugbu a.Mgbe mgba ọkụ ọkụ dị n'elu gbanyụrụ, ọkụ ọkụ na-emekọrịta ihe na-agbanye ruo mgbe elekere na-esote ga-amalite ma ọ bụ inductor ugbu a daa na efu.Ọ bụrụ na ọnọdụ oke ibu na-ebute ihe karịrị 3.9A na-agafe na mgba ọkụ nke ala, usoro elekere na-esote ga-egbu oge ruo mgbe ịgbanwee ugbu a ga-alaghachi na ọkwa nchekwa.
Nchịkọta
LT3650 bụ a completemonolithic, etiti-ike, Li-Ionbatrị chaja, na-agwa elu ntinye voltaji ngwa na ngwọta na-eji opekempe nke mpụga components.IC na-eji 1MHz oge na-adịgide adịgide, nkezi usoro mgbada ala ugbu a.
LT3650 na-etinye mgba ọkụ 2A nke ihe butere bootstrapped na-ebuli oke arụmọrụ n'oge okirikiri ịchaji.Ogologo ntinye obosara na-enye ohere ọrụ iji chaji site na 9V ruo 32V.Ntụtụ nkwụchi ọnụ ụzọ ziri ezi na-enye ohere itinye ọrụ UVLO site na iji nkesa resistor dị mfe.Enwere ike itinye IC na ọnọdụ nkwụsị dị ugbu a dị ala, nke na-ebelata nhụsianya ntinye aka ka ọ bụrụ naanị 15µA.
LT3650 na-agụnye ọtụtụ ogo nke nnwere onwe njikwa ugbu a.A na-edozi n'ozuzu chaja kacha ugbu a site na iji ihe mgbochi inductor nke dị ugbu a.Ntụtụ mmemme kacha ụgwọ dị ugbu a na-enye ohere ịmegharị chaja batrị ugbu a.LT3650 na-etinyekwa ihe ntinye ntinye sistemu na-enye njikwa njikwa oke ugbu a nke na-echekwa ụgwọ batrị ugbu a iji nabata ihe niile achọrọ maka ibu sistemu.
