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TS1910A bảng dữ liệu(PDF) 5 Page - Taiwan Semiconductor Company, Ltd |
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TS1910A bảng dữ liệu(HTML) 5 Page - Taiwan Semiconductor Company, Ltd |
5 / 8 page TS1910A 680kHz/1.2MHz High Voltage Boost Converter 5/8 Version: A12 Compensation Table Frequency(Hz) L1 (H) VIN (V) VOUT (V) R6 ( Ω) C7 (F) 680K (FREQ=Low) 6.8u 2.5~4.4 5 10K 1.2n 2.5~5.5 7 15K 470p 2.5~5.5 9 27K 270p 2.5~5.5 12 56K 150p 2.5~5.5 15 150K 120p 2.5~5.5 18 110K 100p 2.5~5.5 21 150K 82p 2.5~5.5 24 100K 47p 1.2M (FREQ=High) 4.7u 2.5~4.0 5 33K 1n 2.5~5.5 7 39K 390p 2.5~5.5 9 39K 220p 2.5~5.5 12 100K 100p 2.5~5.5 15 130K 68p 2.5~5.5 18 150K 56p 2.5~5.5 21 220K 47p 2.5~5.5 24 390K 39p Application Information Setting the Output Voltage Application circuit item shows the basic application circuit with TS1910A adjustable output version. The external resistor sets the output voltage according to the following equation: VOUT=1.238V x (1+R2/R8) For most applications, R8 is a suggested a value by 10~30KΩ. Place the resistor-divider as close to the IC as possible to reduce the noise sensitivity. Soft Start Capacitor The soft-start function begins from SS pin Voltage=0V to VCC with a 7uA (typ.) constant current charging to the soft- start capacitor, so the capacitor should be large enough to let the output voltage reach regulation inside the soft-start cycle. Typical value of soft-start capacitor range is from 4.7nF to 100nF. After the cycle finished, the load can start to draw maximum current as required. Frequency Select Pin (FREQ) The frequency select pin FREQ allows to set the switching frequency of the device to 680 KHz (FREQ = low) or 1.2 MHz (FREQ = high). Higher switching frequency improves load transient response but reduces slightly the efficiency. The other benefits of higher switching frequency are a lower output ripple voltage. Usually, it is recommended to use 1.2 MHz switching frequency unless light load efficiency is a major concern. |
Số phần tương tự - TS1910A |
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Mô tả tương tự - TS1910A |
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