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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SC284P датащи(PDF) 1 Page - Semtech Corporation |
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SC284P датащи(HTML) 1 Page - Semtech Corporation |
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1 / 22 page  POWER MANAGEMENT Dual Channel 2.5MHz, 2.0A Synchronous Buck with Automatic Power Save SC284P © 204 Semtech Corporation Features V IN Range — 2.75 – 5.5V V OUT Selectable — .0 - 3.3V Up to 2A Output Current for Each Channel Package with Ultra-Small Footprint : 3 x 3 x 0.6(mm) Switching Frequency — 2.5MHz Efficiency Up to 94% High Light-load Efficiency via Automatic PSAVE Mode Low Output Noise in CCM Excellent Transient Response Start Up into Pre-Biased Output 00% Duty-Cycle Low Dropout Operation Shutdown Current — <µA Internal Soft-Start Input Under-Voltage Lockout Output Over-Voltage, Current Limit Protection Over-Temperature Protection V OUT Further Adjustable Using External Resistors PGOOD Feature Lead-free, Halogen-free, and RoHS/WEEE Compliant Applications Wireless Access Point/Router/Modem Femtocell Set-Top Box Point-Of-Sale Projector Description The SC284P is a dual channel 2A synchronous step-down regulator designed to operate with an input voltage range of 2.75 to 5.5 Volts. Each channel offers seven pre-determined output voltages via three control pins programmable from .0 to 3.3 Volts. The control pins allow for on-the-fly voltage changes, enabling system designers to implement dynamic power savings. The SC284P is also capable of adjusting the output voltage via an external resistor divider. The SC284P is optimized for maximum efficiency over a wide range of load currents. During full load operation, the device operates in PWM mode with fixed 2.5MHz oscillator frequency, allowing the use of small surface mount external components. As the load decreases, the regulator will transition into Power Save mode maintaining high efficiency. Connecting CTL0 — CTL2 to logic low forces the device into shutdown mode reducing the supply current to less than µA. Connecting any of the control pins to logic high enables the converter and sets the output voltage according to Table . Other features include under- voltage lockout, soft-start to limit inrush current, and over-temperature protection. Typical Application Circuit Revision 2. SC284P CTL0A CTL1A CTL2A PGOODA CTL0A CTL1A CTL2A PGOODA CTL0B CTL1B CTL2B PGOODB CTL0B CTL1B CTL2B PGOODB AVINA VINA CAVINA 10nF RAVINA 1Ω PVINA AVINB VINB CAVINB 10nF RAVINB 1Ω PVINB PGNDB AGNDB PGNDA AGNDA CINA 10µF CINB 10µF COUTA 22µF LXA VOUTA VOUTA LA 2.2µH LB 2.2µH COUTB 22µF LXB VOUTB VOUTB |
Аналогичный номер детали - SC284P |
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Аналогичное описание - SC284P |
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