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SI3454 Datasheet(PDF) 2 Page - Silicon Laboratories |
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SI3454 Datasheet(HTML) 2 Page - Silicon Laboratories |
2 / 57 page Si3454 2 Rev. 1.1 Functional Block Diagrams DC-DC Converter Block Diagram VDDA VDD VDRAINn Rsn DRAINn Measure AMUX PGA Drive Control HV SIO Temp Sensor AMUX SPI SRAM POR WDT 50MHz TIMERS SCL SDAO INT RESET SDAI SHDN Gate Drive Xn Detect Xn (/4) MCU HVIO 10 Bit 500Khz Detect Drive Gate Drive GATEn SENSEn Bandgap C8051 MCU Core OTP r ADC n 0.25 n VDD (+3.3V) Detection MUX n KSENSx VPWR (+52V) DGND Measure n n (NOTE: Only one port shown) DC-DC Controller CAP SWO A0 A2 A3 A1 AGND DCEN AUTO ISENSE VPWR CAP SWO AGND DCEN Regulator 4.3V 3.3V VDDA The case shown has both the DC-DC converter and series regulator enabled. To enable ONLY the series regulator, tie SWO to VPWR. External components are unnecessary. ISENSE |
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