TPS65251RHAR Fetola Litsamaiso tsa Voltage PMU e nang le 3 DC/DC Converters
♠ Tlhaloso ea Sehlahisoa
| Sehlahisoa Tšobotsi | Boleng ba Tšobotsi |
| Moetsi: | Lisebelisoa tsa Texas |
| Sehlopha sa Sehlahisoa: | Ho fetola Voltage Regulators |
| RoHS: | Lintlha |
| Mounting Style: | SMD/SMT |
| Sephutheloana / Taba: | VQFN-40 |
| Topology: | Buck |
| Output Voltage: | 800 mV ho isa ho 17 V |
| Sephetho sa Hona Joale: | 3 A |
| Nomoro ea Liphetho: | 3 Sephetho |
| Input Voltage, Min: | 4.5 V |
| Kenya Voltage, Max: | 18 V |
| Quiscent Current: | 1 mA |
| Fetoha Maqhubu: | 300 kHz ho 2.2 MHz |
| Mocheso o fokolang oa ho sebetsa: | - 40 C |
| Boholo ba Thempereichara ea Tšebetso: | + 125 C |
| Letoto: | TPS65251 |
| Sephutheloana: | Reel |
| Sephutheloana: | Khaola Theipi |
| Sephutheloana: | MouseReel |
| Lebitso: | Lisebelisoa tsa Texas |
| Development Kit: | TPS65251EVM |
| Matla a Kena: | 4.5 ho isa ho 18 V |
| Ha e Mamelle Mongobo: | Ee |
| Phepelo ea Hona Joale: | 20 mA |
| Mofuta oa Sehlahisoa: | Ho fetola Voltage Regulators |
| Bongata ba Pakete ea Feme: | 2500 |
| Sehlopha-potlana: | PMIC - Li-IC tsa Tsamaiso ea Matla |
| Boima ba Yuniti: | 0.003527 oz |
♠ TPS65251 4.5-V ho 18-V Input, High-Hajoale, Synchronous Step-down Three Buck Switcher Ka FET e Kopantsoeng
TPS65251 e na le li-converter tse tharo tse pharalletseng tse fapaneng tse fapaneng tse sebetsang hantle haholo. Li-converter li etselitsoe ho nolofatsa ts'ebeliso ea tsona ha li ntse li fa moqapi khetho ea ho ntlafatsa ts'ebeliso ea bona ho latela ts'ebeliso e reriloeng.
Li-converter li ka sebetsa ka mekhoa ea 5-, 9-, 12- kapa 15-V 'me li na le li-transistors tsa matla tse kopantsoeng. Motlakase o hlahisoang o ka behoa ka ntle ho sebelisoa mochine o thibelang ho thibela boleng leha e le bofe pakeng tsa 0.8 V le haufi le phepelo ea ho kenya letsoho. E 'ngoe le e' ngoe ea likarolo tsa converter e nolofalletsa phini e lumellang ho lieha ho qala ka sepheo sa ho latellana, pini e qalang e bonolo e lumellang nako e bonolo ea ho qala ka ho khetha capacitor e qalang, le pin ea moeli (RLIMx) e lumellang moqapi ho fetola moeli oa hona joale ka ho khetha mohanyetsi oa ka ntle le ho ntlafatsa khetho ea inductor. Mokhoa oa hona joale oa ho laola o lumella matšeliso a bonolo a RC.
Maqhubu a ho fetoha ha li-converter a ka beoa ka sehanyetsi sa kantle se hokahaneng le pin ea ROSC kapa a ka hokahanngoa le oache e kantle e hokahantsoeng le phini ea SYNC ha ho hlokahala. Li-switching regulators li etselitsoe ho sebetsa ho tloha ho 300 kHz ho isa ho 2.2 MHz. 180° kantle ho ts'ebetso lipakeng tsa Buck 1 le Buck 2, 3 (Buck 2 le 3 run in phase) e fokotsa litlhoko tsa ho kenya letsoho.
• Phahamiso e pharalletseng ea Phepelo ea Motlakase (4.5 ho isa ho 18 V)
• 0.8 V, 1% Ho nepahala ha Reference
• Continuous Loading: 3 A (Buck 1), 2 A (Buck 2 le 3)
• Boholo ba Hona Joale: 3.5 A (Buck 1), 2.5 A (Buck 2 le 3)
• Fetola Frequency 300 kHz ho isa ho 2.2 MHz E Behiloe ke External Resistor
• E inehetseng nolofalletsa bakeng sa Buck ka 'ngoe
• External Synchronization Pin bakeng sa Oscillator
• External Noble/Sequencing le Soft-Start Pins
• Moeli o Fetohang oa Hona Joale o Behiloeng ke Mohanyetsi oa Kantle
• Soft-Start Pins
• Taolo ea Mokhoa oa Hona Joale Ka Potoloho e Bonolo ea Matšeliso
• Powergood
• Mokhoa oa boikhethelo oa Mokhoa o Tlase oa Matla bakeng sa Meroalo e Leseli
• Sephutheloana sa VQFN, 40-Pin 6 mm × 6 mm RHA
• Seta Mabokose a ka Holimo
• DVD ea Blu-ray
• DVR • DTV
• Audio / Video ea Koloi
• Khamera ea Tšireletso
