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SC220 Folha de dados(PDF) 1 Page - Semtech Corporation |
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SC220 Folha de dados(HTML) 1 Page - Semtech Corporation |
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1 / 14 page  POWER MANAGEMENT SC220 x SC220Q 20MHz, 650mA, X-EMI™-Enabled Synchronous Step-Down Regulator Features Patented X-EMITM Inductor Technology Enables Trace Inductors in PC Board Material Excellent EMI Performance Efficiency up to 90% 9µA Quiescent Current under Very Light Loads Wide Input Voltage Range — 2.7V to 5.5V Adjustable Output Voltage Down to .0V Output DC Current — up to 650mA High Light-load Efficiency via Automatic PSAVE Mode Ultra-fast Transient Response — <µs Temperature Range — -40 to +85°C Shutdown Current — 0.µA (typical) Requires Tiny 220nH Inductor Requires Only μF of Output Capacitance External Switching Frequency Synchronization Protection Features Including Over-Current Protection Output Short-Circuit Protection Thermal Shutdown Protection Offered in SOIC 8 Lead Package Lead-free, halogen-free, and RoHS/WEEE Compliant AEC-Q00 Qualified Version Available Applications HDTV, Set Top Boxes, Gaming Consoles POL Applications White Goods Automotive AEC-Q00 Qualified Applications Description The SC220/Q is a 20MHz X-EMI™()-enabled step-down regulator optimized for power low voltage rails from 2.7 to 5.5V input voltage. X-EMI™ inductor technology enables inductors to be drawn directly on the PC board. This technology meets or exceeds the EMI performance of chip inductors and eliminates the need for discrete inductors. The SC220/Q uses a unique constant frequency, self- oscillating control loop architecture to provide excellent transient performance. Under light loads, the device operates in Power Save mode(PSAVE) maintaining a typical quiescent current of 9µA. At moderate to heavy loads, this part operates in PWM mode with a constant switching frequency of 20MHz. This high switching fre- quency offers the advantages of using small and low cost external components like a µF external capacitor and a small 220nH inductor (including X-EMITM PCB trace inductors). The device provides adjustable output voltages down to .0V and an output current up to 650mA. An EN pin can be used to synchronize to an external source and includes de-glitching to reduce noise sensitivity. The SC220/Q is available in SOIC 8 lead package. The SC220Q is an AEC-Q00 qualified version. Note : Purchase of SC220/Q includes royalty-free right to use X-EMITM inductor technology with no addi- tional cost. Typical Application Circuit January 5, 203 SC220 SC220Q AG ND SW VO UT VIN L, 220nH COUT 1 µF EN Enable FB AVIN PVIN CIN 1 µF R1 R2 PG ND VOUT=1.8V up to 650m A 2.7~5.5V |
Nº de peça semelhante - SC220_13 |
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Descrição semelhante - SC220_13 |
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