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ST735SCD 数据表(PDF) 3 Page - STMicroelectronics |
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ST735SCD 数据表(HTML) 3 Page - STMicroelectronics |
3 / 11 page ST735S/ST735T 3/11 ORDERING CODES TYPICAL APPLICATION CIRCUIT NOTE: 1) All capacitors are X7R ceramic 2) C5 can be omitted if are used higher values for the input and output capacitors (suggested C2=47µF, C1=100µF). 3) R1 and R2 must be placed is ST735T applications only. Their values are calculated by the following formula R2=(|VOUT|/VREF)xR1.For R1 can be chosen any value between 2k Ω and 20kΩ APPLICATION CIRCUIT To achieve the best performances from switching power supply topology, particular care to layout drawing is needed, in order to minimize EMI and obtain low noise. Moreover, jitter free operation ensures the full device functionality. Layout design proposed on demoboard helps to lower the developing time. Wire lengths must be minimized, filter and bypass capacitors must be low ESR type, placed as close as possible to the integrated circuit. The 4.7 µF (or 6.8µF) inductor must be chosen built on a core, taking care that saturation current should be higher than the peak LX switch current. See the Peak Inductor Current vs Output Current graph. PRINTED DEMOBOARD (not in scale) TYPE DIP-8 SO-8 SO-8 (T&R) ST735S ST735SCN ST735SCD ST735SCD-TR ST735T ST735TCN ST735TCD ST735TCD-TR |
类似零件编号 - ST735SCD |
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类似说明 - ST735SCD |
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