Izakhiwo zomkhiqizo:
| UHLOBO | CHAZA |
| isigaba | I-Integrated Circuit (IC) PMIC - Voltage Regulators - DC DC Ukushintsha Regulators |
| umkhiqizi | Texas Instruments |
| uchungechunge | - |
| Iphakheji | I-Tape ne-Reel (TR)I-Shear Band (CT)I-Digi-Reel® Custom Reel |
| isimo somkhiqizo | kukhona kusitoki |
| Umsebenzi | Buck |
| ukumiswa kokuphumayo | nje |
| i-topology | Buck |
| uhlobo lokukhiphayo | iyalungiseka |
| Inani lokuphumayo | 3 |
| I-Voltage - Okokufaka (Okuncane) | 4.5V |
| I-Voltage - Okokufaka (Ubukhulu) | 18V |
| I-Voltage - Okukhiphayo (imizuzu/elungisiwe) | 0.8V |
| I-Voltage - Okukhiphayo (Okuphezulu) | 18V |
| Okwamanje - Okukhiphayo | 3A, 2A |
| Imvamisa - shintsha | 300kHz ~ 2.2MHz |
| I-synchronous Rectifier | Yebo |
| Izinga lokushisa lokusebenza | -40°C ~ 125°C (TJ) |
| uhlobo lokufaka | Uhlobo Lwentaba Engaphezulu |
| Iphakheji/Indawo Evalekile | 40-VFQFN Iphedi Eveziwe |
| Ukupakishwa Kwedivayisi Yomhlinzeki | 40-VQFN (6x6) |
| Inombolo yomkhiqizo eyisisekelo | I-TPS65251 |
Ukuhlelwa Kwemvelo Nokuthekelisa:
| IZIMPAWU | CHAZA |
| Isimo se-RoHS | Ihambisana nokucaciswa kwe-ROHS3 |
| Izinga Lokuzwela Komswakama (MSL) | 3 (amahora angu-168) |
| REACH isimo | Imikhiqizo engafinyeleli |
| ECCN | I-EAR99 |
| HTSUS | 8542.39.0001 |
I-TPS65251 4.5-V ukuya ku-18-V Okokufaka, Okuphezulu Kwamanje, I-Synchronous Step-down Three Buck
Isishintshi Nge-FET Ehlanganisiwe
1
1 Izici
1
•
I-Wide Inpuly Voltage Range (4.5 ukuya ku-18 V)
•
0.8 V, 1% Isithenjwa Sokunemba
•
Ukulayisha Okuqhubekayo: 3 A (Buck 1),
2 A (Buck 2 kanye no-3)
•
Ubuningi Bamanje: 3.5 A (Imali engu-1),
2.5 A (Buck 2 kanye no-3)
•
Imvamisa Yokushintsha Okulungisekayo
300 kHz ukuya ku-2.2 MHz Isethwe I-Resistor Yangaphandle
•
Ezinikezelwe Vumela Ibhakede ngalinye
•
Iphinikhodi yokuvumelanisa yangaphandle ye-Oscillator
•
Ukunika amandla/Ukulandelanisa kwangaphandle kanye nezikhonkwane zokuqalisa ezithambile
•
Umkhawulo Wamanje Olungisekayo Umiswe Isiphikisi Sangaphandle
•
Izikhonkwane Zokuqala Ezithambile
•
Ukulawula Imodi Yamanje Ngesinxephezelo Esilula
Isekhethi
•
I-Powergood
•
Ukuzikhethela Ukusebenza Kwemodi Yamandla Aphansi Yokukhanya
Imithwalo
•
Iphakheji le-VQFN, 40-Pin 6 mm × 6 mm RHA
2 Izinhlelo zokusebenza
•
Setha Amabhokisi Aphezulu
•
I-DVD ye-Blu-ray
•
I-DVR
•
I-DTV
•
Umsindo wemoto/Ividiyo
•
Ikhamera Yokuphepha
3 Incazelo
I-TPS65251 inezici ezintathu ezibanzi ezivumelanayo
uhla lokokufaka iziguquli zebhaka ezisebenza kahle kakhulu.I
iziguquli zenzelwe ukwenza lula ukusetshenziswa kwazo
kuyilapho unikeza umklami inketho yokuthuthukisa yabo
ukusetshenziswa ngokuya ngohlelo oluhlosiwe.
Iziguquli zingasebenza ku-5-, 9-, 12- noma 15-V
amasistimu futhi abe nama-transistors amandla ahlanganisiwe.I
i-voltage ephumayo ingasethwa ngaphandle kusetshenziswa i-resistor
isihlukanisi kunoma yiliphi inani eliphakathi kuka-0.8 V naseduze kwe-
ukunikezwa kokufaka.Isiguquli ngasinye sinezici ezivumela iphini lokho
ivumela ukuqalisa ukubambezeleka ngezinjongo zokulandelanisa,
iphinikhodi yokuqala ethambile evumela isikhathi sokuqala esithambile esilungisekayo
ukukhetha i-soft-start capacitor, kanye nomkhawulo wamanje
(RLIMx) iphinikhodi evumela umklami ukuthi alungise okwamanje
khawulela ngokukhetha i-resistor yangaphandle futhi uthuthukise i-
ukukhetha kwe-inductor.Ukulawulwa kwemodi yamanje kuvumela a
isinxephezelo se-RC esilula.
Imvamisa yokushintsha yeziguquli ingaba noma
isethwe nge-resistor yangaphandle exhunywe ku-ROSC
pin noma ingavunyelaniswa newashi langaphandle
ixhunywe kuphinikhodi ye-SYNC uma kudingeka.Ukushintsha
izilawuli zenzelwe ukusebenza kusuka ku-300 kHz kuya
2.2 MHz.180° ngaphandle kokusebenza kwesigaba phakathi kwe-Buck
1 kanye ne-Buck 2, 3 (I-Buck 2 kanye ne-3 igijima esigabeni)
kunciphisa izimfuneko zokuhlunga okokufaka.
