product properties:
| TYPE | TSANANGURA |
| category | Integrated Circuit (IC) PMIC - Voltage Regulators - DC DC Switching Regulators |
| mugadziri | Texas Instruments |
| series | - |
| Package | Tepi uye Reel (TR)Shear Band (CT)Digi-Reel® Custom Reel |
| chigadzirwa chimiro | mudura |
| Function | Buck |
| kubuda kwekugadzirisa | just |
| topology | Buck |
| kubuda mhando | inochinjika |
| Nhamba yezvabuda | 3 |
| Voltage - Input (Mini) | 4.5V |
| Voltage - Input (Max) | 18V |
| Voltage - Kubuda (min/yakagadziriswa) | 0.8V |
| Voltage - Inobuda (Yakanyanya) | 18V |
| Zvazvino - Output | 3A, 2A |
| Frequency - chinja | 300kHz ~ 2.2MHz |
| Synchronous Rectifier | Ehe |
| Kushanda tembiricha | -40°C ~ 125°C (TJ) |
| kuiswa mhando | Surface Mount Type |
| Package/Enclosure | 40-VFQFN Yakafumurwa Pad |
| Supplier Device Packaging | 40-VQFN (6x6) |
| Basic chigadzirwa nhamba | TPS65251 |
Nzvimbo uye Export Classification:
| ATTRIBUTES | TSANANGURA |
| RoHS chimiro | Inoenderana neROHS3 yakatarwa |
| Moisture Sensitivity Level (MSL) | 3 (168 maawa) |
| SVITSA chimiro | Zvigadzirwa zvisiri-REACH |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
TPS65251 4.5-V kusvika 18-V Input, Yepamusoro-Yazvino, Synchronous Nhanho-Pazasi Matatu Buck
Shandura Iine Yakabatanidzwa FET
1
1 Zvinoumba
1
•
Wide Input Supply Voltage Range (4.5 kusvika 18 V)
•
0.8 V, 1% Yakarurama Reference
•
Inoenderera Inorodha: 3 A (Buck 1),
2 A (Buck 2 ne3)
•
Yakakura Yazvino: 3.5 A (Buck 1),
2.5 A (Buck 2 ne3)
•
Adjustable Switching Frequency
300 kHz kusvika 2.2 MHz Set by External Resistor
•
Yakatsaurirwa Inogonesa kune Imwe neimwe Buck
•
External Synchronization Pin yeOscillator
•
Zvekunze Gonesa/Kutevedzana uye Nyoro-Kutanga Pini
•
Inogadziriswa Yazvino Muganho Wakaiswa Nekunze Resistor
•
Soft-Start Pins
•
Yazvino-Modhi Kudzora NeKuripira Nyore
Circuit
•
Powergood
•
Optional Low-Power Mode Operation yeChiedza
Mitoro
•
VQFN Package, 40-Pin 6 mm × 6 mm RHA
2 Applications
•
Seta Mabhokisi Epamusoro
•
Blu-ray DVD
•
DVR
•
DTV
•
Mota Audio/Vhidhiyo
•
Chengetedzo Kamera
3 Tsanangudzo
Iyo TPS65251 inoratidzira matatu akaenzana akafara
yekuisa siyana yakakwirira inoshanda buck converters.The
ma converter akagadzirirwa kurerutsa mashandisirwo awo
uku uchipa mugadziri sarudzo yekuwedzera yavo
kushandiswa zvinoenderana nechinangwa chekushandisa.
Vashanduri vanogona kushanda mu5-, 9-, 12- kana 15-V
masisitimu uye ane yakasanganiswa magetsi transistors.The
kubuda kwemagetsi kunogona kuiswa kunze uchishandisa resistor
divider kune chero kukosha pakati pe0.8 V uye pedyo ne
kuiswa kwekuisa.Yese inoshandura maficha anogonesa pini iyo
inobvumira kunonoka kutanga kwezvinangwa zvekutevedzana,
nyoro-yekutanga pini inobvumira inogadziriswa yakapfava-yekutanga nguva
kusarudza iyo yakapfava-kutanga capacitor, uye muganhu wezvino
(RLIMx) pini inogonesa mugadziri kugadzirisa zvazvino
muganhu nekusarudza yekunze resistor uye optimize iyo
sarudzo ye inductor.Ikozvino maitiro ekutonga anobvumira a
nyore RC muripo.
Iyo inoshandura frequency yevashanduri inogona kana
inogadzikwa neyekunze resistor yakabatana neROSC
pini kana inogona kuwiriraniswa kune yekunze wachi
yakabatana neSYNC pini kana zvichidikanwa.The switching
regulators akagadzirirwa kushanda kubva ku300 kHz kuenda
2.2 MHz.180 ° kunze kwechikamu chekushanda pakati peBuck
1 uye Buck 2, 3 (Buck 2 uye 3 inomhanya muchikamu)
inoderedza zvinodiwa sefa.
