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RT9945 Datasheet(PDF) 5 Page - Richtek Technology Corporation |
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RT9945 Datasheet(HTML) 5 Page - Richtek Technology Corporation |
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5 / 33 page  RT9945 5 DS9945-01 April 2011 www.richtek.com Function Block Diagram ON/OFF Control & I 2C Interface Li-lon Linear Charger Control Thermal Shutdown UVLO Buck1 Reset Buck2 LDO1 LDO2 LDO3 LDO4 320ms Debounce HP_PWR FB1 PGND1 LX1 LX2 PGND2 FB2 nCHG_S VOUT5 VOUT2 PWR_EN VOUT1 VOUT3 ISETA ISETU PWR_ID TIMER BATT VOUT4 PWR_ON PWR_HOLD nRESET PWR_IN VSYS VIN1 LDO5 VIN3 VIN2 BUCK1 OK 2µA 320ms Debounce 2µA nPBSTAS TS SW Control Circuit nINT + - LBI 1V VSYS nLBO DATA CLK S2 S1 GND |
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