katundu katundu:
| TYPE | Fotokozani |
| gulu | Integrated Circuit (IC) PMIC - Voltage Regulators - DC DC Switching Regulators |
| wopanga | Texas Instruments |
| mndandanda | - |
| Phukusi | Tape ndi Reel (TR)Shear Band (CT)Digi-Reel® Custom Reel |
| katundu udindo | zilipo |
| Ntchito | Buck |
| makonda otuluka | basi |
| topology | Buck |
| mtundu wotuluka | chosinthika |
| Chiwerengero cha zotuluka | 3 |
| Mphamvu yamagetsi - Kulowetsa (Mphindi) | 4.5V |
| Mphamvu yamagetsi - Kulowetsa (Max) | 18v ndi |
| Mphamvu yamagetsi - Kutulutsa (mphindi / kukhazikika) | 0.8V |
| Mphamvu yamagetsi - Zotulutsa (Zapamwamba) | 18v ndi |
| Zamakono - Zotuluka | 3a, 2a |
| pafupipafupi - kusintha | 300kHz ~ 2.2MHz |
| Synchronous Rectifier | Inde |
| Kutentha kwa ntchito | -40°C ~ 125°C (TJ) |
| mtundu woyika | Surface Mount Type |
| Phukusi/Enclosure | 40-VFQFN Yowonekera Pad |
| Supplier Chipangizo Packaging | 40-VQFN (6x6) |
| Nambala yoyambira yazinthu | Chithunzi cha TPS65251 |
Gulu la Zachilengedwe ndi Zogulitsa kunja:
| MAKHALIDWE | Fotokozani |
| Udindo wa RoHS | Zogwirizana ndi ROHS3 |
| Moisture Sensitivity Level (MSL) | 3 (maola 168) |
| REACH status | Zopanda REACH |
| Mtengo wa ECCN | NDI 99 |
| HTSUS | 8542.39.0001 |
TPS65251 4.5-V mpaka 18-V Lowetsani, High-Panopa, Synchronous Kutsika-Pansi Zitatu Buck
Switcher Ndi Integrated FET
1
1 Zinthu
1
•
Wide Inpuly Voltage Range (4.5 mpaka 18 V)
•
0,8 V, 1% Zolondola Zolemba
•
Kukwezera Kupitilira: 3 A (Buck 1),
2 A (Buck 2 ndi 3)
•
Pakalipano: 3.5 A (Ndalama 1),
2.5 A (Buck 2 ndi 3)
•
Kusintha kosinthika pafupipafupi
300 kHz mpaka 2.2 MHz Yokhazikitsidwa ndi External Resistor
•
Odzipatulira Yambitsani kwa Buck Iliyonse
•
Pini Yolumikizira Kunja ya Oscillator
•
Kunja Yambitsani/Kutsatizana ndi Mapini Oyambira Ofewa
•
Malire Apano Osinthika Okhazikitsidwa Ndi External Resistor
•
Zikhomo Zoyambira Zofewa
•
Kuwongolera Kwamakono Ndi Malipiro Osavuta
Dera
•
Powergood
•
Mwasankha Kugwiritsa Ntchito Mphamvu Zochepa Pakuwala
Katundu
•
Phukusi la VQFN, 40-Pin 6 mm × 6 mm RHA
2 Mapulogalamu
•
Khazikitsani Mabokosi Apamwamba
•
Blu-ray DVD
•
DVR
•
DTV
•
Galimoto Audio/Video
•
Kamera yachitetezo
3 Kufotokozera
TPS65251 imakhala ndi mawonekedwe atatu osakanikirana
zolowetsa zosiyanasiyana zosintha mwachangu kwambiri.The
otembenuza amapangidwa kuti azisavuta kugwiritsa ntchito
pamene akupatsa mlengi mwayi woti akwaniritse bwino
kugwiritsa ntchito molingana ndi zomwe mukufuna.
Otembenuza amatha kugwira ntchito mu 5-, 9-, 12- kapena 15-V
machitidwe ndipo ali ndi ma transistors ophatikizika amagetsi.The
mphamvu yamagetsi imatha kukhazikitsidwa kunja pogwiritsa ntchito resistor
kugawa kwa mtengo uliwonse pakati pa 0.8 V ndi pafupi ndi
zolowetsa.Aliyense Converter zimalola pini kuti
kumapangitsa kuti kuchedwetsedwe kuyambirenso kutsata zolinga,
pini yoyambira yofewa yomwe imalola kuti nthawi yoyambira ikhale yofewa
kusankha capacitor yofewa, ndi malire apano
(RLIMx) pini yomwe imathandizira wopanga kusintha zomwe zilipo
malire posankha chopinga chakunja ndikuwongolera
kusankha kwa inductor.The panopa mode ulamuliro amalola a
malipiro osavuta a RC.
Kusintha pafupipafupi kwa otembenuza kumatha
kukhazikitsidwa ndi chopinga chakunja cholumikizidwa ndi ROSC
pini kapena ikhoza kulumikizidwa ku wotchi yakunja
cholumikizidwa ndi SYNC pini ngati pakufunika.Kusintha
owongolera adapangidwa kuti azigwira ntchito kuchokera ku 300 kHz mpaka
2.2 MHz.180 ° kunja kwa gawo la ntchito pakati pa Buck
1 ndi Buck 2, 3 (Buck 2 ndi 3 kuthamanga mu gawo)
amachepetsa zofunikira zosefera.
