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SP7685EB Datasheet(PDF) 10 Page - Exar Corporation |
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SP7685EB Datasheet(HTML) 10 Page - Exar Corporation |
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10 / 13 page  10 Date: 6/20/06 Rev T SP7685, 1.2A Buck/BoostCharge Pump LED Driver © 2006 Sipex Corporation EVALUATION BOARD CIRCUIT LAYOUT Table 2: Resistor values and sizes Watt pulsed power, more than enough for this application. For other applications, the P FLASH power can be calculated and resistor size selected. The R SENSE resistor is recom- mended to be size 0603 for most applica- tions. The range of typical resistor values and sizes are shown here in Table 2. COMPONENT SELECTION Part Reference Value Tolerance Size Manufacturers RSET 33kΩ 5% 0402 any RSET 39kΩ 5% 0402 any RSET 43kΩ 5% 0402 any RSET 47kΩ 5% 0402 any RSET 56kΩ 5% 0402 any RSET 62kΩ 5% 0402 any RSET 68kΩ 5% 0402 any RSET 82kΩ 5% 0402 any RSET 100kΩ 5% 0402 any RSET 110kΩ 5% 0402 any RSET 120kΩ 5% 0402 any RSET 150kΩ 5% 0402 any RSENSE 0.22Ω 5% 0603 Panasonic or Vishay RSENSE 0.27Ω 5% 0603 Panasonic or Vishay RSENSE 0.33Ω 5% 0603 Panasonic or Vishay RSENSE 0.39Ω 5% 0603 Panasonic or Vishay RSENSE 0.47Ω 5% 0603 Panasonic or Vishay RSENSE 0.56Ω 105% 0604 Panasonic or Vishay RSENSE 0.68Ω 205% 0605 Panasonic or Vishay |
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