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AS3715 数据表(PDF) 30 Page - ams-OSRAM AG |
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AS3715 数据表(HTML) 30 Page - ams-OSRAM AG |
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30 / 159 page  ams Datasheet Page 29 [v1-03] 2015-Aug-10 Document Feedback AS3715 − Detailed Description – Power Management Functions Figure 29: LDO External Components LDO External Components: Shows the external component parameter of the linear regulators. Universal IO LDO Regulators Description 6 universal IO range LDOs offer a wide input (1.8V to 5.5V ) as well as a wide output (0.8 to 3.3V) voltage range to be used for general purpose peripheral supply Up to 300mA possible output currents are offered with good noise and regulation performance and very low quiescent current even suitable for stand-by power supply. LDO7 & 8 offer in addition a load switch function, if the lowest possible drop-out without regulation is needed. Figure 30: Universal IO LDO Block Diagram Universal IO LDO Block Diagram: Shows the internal structure of the universal IO PMOS linear regulators. Symbol Parameter Conditions Min Typ Max Unit COUT_LDO1;2 Output capacitor Ceramic X5R or X7R ldoX_limit = 0 15 μF Ceramic X5R or X7R ldoX_limit =1 25 μF CVIN_LDO12 Input capacitor Ceramic X5R or X7R 2 μF VIN_LDOx LDOx Er ror Amplifier Vr ef 1.8V or 0.8V CVIN_LDOx COUT_LDOx PMOS Power Device VSS_LDOx |
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