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RT9971 Datasheet(PDF) 7 Page - Richtek Technology Corporation |
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RT9971 Datasheet(HTML) 7 Page - Richtek Technology Corporation |
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7 / 22 page  7 DS9971-01 April 2011 www.richtek.com RT9971 Function Block Diagram Timing Diagram CH5 and CH6 Timing Diagram SW5O (to CCD +) EN5 10ms SW5I EN6 Depends on loading Depends on loading Depends on loading 10ms VOUT_CH6 (to CCD -) CH1 C-Mode Step-Up + - 0.8V REF CH2 C-Mode Step-Up or Step-Down + - 0.8V REF CH5 C-Mode Step-Up PWM + - 1.25V REF OK VOUT7 FB5 LX5 SW5I VDDM GND FB1 COMP1 LX1 LX2 PVDD1 COMP2 PVDD2 FB2 SW5O CH6 C-Mode Inverting PVDD6 LX6 + - FB6 CH7 C-Mode Step-Up PWM + - 0.25V REF CFB7 LX7 EN7 Enable Mode Sequence EN134 EN5 EN6 Negative Charge Pump CP CN PNEG RTC LDO SW1 VOUT1 1.25V REF VREF SW5 SEL VDDM RTC Reset RTC_R RTC_PWR CH4 C-Mode Step-Down PVDD4 LX4 FB4 + - 0.8V REF CH3 C-Mode Step-Down PVDD3 LX3 FB3 + - 0.8V REF EN2 |
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