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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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RT9705B 데이터시트(PDF) 4 Page - Richtek Technology Corporation |
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RT9705B 데이터시트(HTML) 4 Page - Richtek Technology Corporation |
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4 / 12 page  RT9705B 4 DS9705B-03 April 2011 www.richtek.com Function Block Diagram Control Logic + - + - Charge Pump Charge Pump + - + - + + + - VDD UVLO VIN2 UVLO VIN1 UVLO Thermal Sense Internal VDD Q1 is OFF EN1 EN2 V TH 0.5V VOUT VIN1 VIN2 STAT VIN2 VIN1 ILIM D0 D1 0.1V Q2 is OFF VOUT>VIN Q2 is ON Current Sence V f = 0 V f = 0 Q1 Q2 GND Timing Diagram 10% 90% tr tPLH1 tf tPHL1 VOUT D0-D1 Q1, Q2 Off Q1, Q2 Enabled Q1, Q2 Off 10% 90% 0V 3.3V 3.4V 4.8V tt 5V D0-D1 Q1 Enabled Q2 Enabled VOUT 3.3V 3.4V 5V 4.65V D0-D1 Q1Enabled Q2 Enabled Q1 Enabled tPLH2 tPHL2 VOUT (a) (b) (c) |
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