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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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SC284 bảng dữ liệu(PDF) 1 Page - Semtech Corporation |
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SC284 bảng dữ liệu(HTML) 1 Page - Semtech Corporation |
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1 / 20 page  POWER MANAGEMENT Dual Channel 2.5MHz, 1.8A Synchronous Step-Down Regulator SC284 Features V IN Range — 2.9 – 5.5V V OUT Selectable — 0.8 - 3.3V Up to .8A Output Current for Each Channel Ultra-Small Footprint, <mm Height Solution Switching Frequency — 2.5MHz Efficiency Up to 94% Excellent Light Load Efficiency Low Output Noise Across Load Range Excellent Transient Response Start Up into Pre-Bias 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 Adjustable Output Voltage Package — 3 x 3 x 0.6(mm) UT20 Temperature Range — -40 to +85°C Lead-free, halogen-free, and RoHS/WEEE compliant Applications Desktop Computing Set-Top Box LCD TV Network Cards Printer Description The SC284 is a dual channel .8A synchronous step- down regulator designed to operate with an input voltage range of 2.9 to 5.5 Volts. Each channel offers fifteen pre-determined output voltages via four control pins programmable from 0.8 to 3.3 Volts. The control pins allow for on-the-fly voltage changes, enabling system designers to implement dynamic power savings. The SC284 is also capable of adjusting the output voltage via an external resistor divider. The device operates with a fixed 2.5MHz oscillator frequency, allowing the use of small surface mount external components. Connecting CTL0 — CTL3 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. The SC284 is available in a 3 x 3 x 0.6 (mm) MLPQ-UT20 package and has a rated temperature range of -40 to +85°C. Typical Application Circuit Revision 2.0 SC284 CTL0A CTL1A CTL2A CTL3A CTL0A CTL1A CTL2A CTL3A CTL0B CTL1B CTL2B CTL3B CTL0B CTL1B CTL2B CTL3B AVINA VINA CAVINA10nF RAVINA1Ω PVINA AVINB VINB CAVINB10nF RAVINB1Ω 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 |
Số phần tương tự - SC284 |
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Mô tả tương tự - SC284 |
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