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AS3525 Datasheet(PDF) 10 Page - ams AG |
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AS3525 Datasheet(HTML) 10 Page - ams AG |
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10 / 194 page  AS3525-A/-B C22O22 Data Sheet, Confidential © 2005-2009, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved. www.austriamicrosystems.com Revision 1.13 10 - 194 5.2 Hard-Disk-Player The following schematic shows a typical hard-disk-player application of the AS3525-A using the CTBGA224 package. A single Li+ battery powers the complete system. The Li+ cell can be charged either from a DC-supply or the USB connector. Linear regulators, which are connected to this battery voltage (BVDD), provide the supply voltages for the analog functions, the USB-2.0-Phy, the digital periphery and the SDRAM interface. A highly efficient Charge-Pump Step-Down-Converter supplies the digital core. All chip functions are available in this package variant. For lowest power consumption, it is recommended to use low voltage external SDRAMs (PVDD=1.8V). Figure 3 Hard Disk Player |
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