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LC709511FQD-A00TWG Datasheet(PDF) 7 Page - ON Semiconductor |
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LC709511FQD-A00TWG Datasheet(HTML) 7 Page - ON Semiconductor |
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7 / 25 page  LC709511F www.onsemi.com 7 DVDD P‐ LC709511F GND TEST1 TEST2 Application board Power supply or Battery P+ Writing tool DVDD TEST1 REFERENCE SOFTWARE Writing tool This device has non-volatile memory, and can implement the function of each USB port by writing software. It is capable of writing on user application board with dedicated writing tool. Figure 3 shows a connection between the application board and the writing tool. Please refer to an application note for the details of the tool. Figure 3: Connection example to write software USB Support Appropriate software enables various functions of USB ports. ON semiconductor provides some software as reference. It is active to download them from the homepage of ON Semiconductor. The explanation about the functions of two Reference software are as follows. They are distinguished by the type name which is FW02 and FW05. FW02 Micro-B Sink, Type-A Source 2-ch, Quick Charge 3.0 HVDCP, USB detection, Smart switch, Boost auto start-up, External Boost-IC. FW05 Type-C Sink/Source, Type-A Source, Quick Charge 3.0 HVDCP, USB detection, Smart switch, Boost auto start-up, External Boost-IC. The Relationship between the Reference software and the USB port functions is shown in Table 4 and Figures 4, 5 and 6 USB1 port of FW02 is a power sink for Buck charge. And it contains USB Detection functions of BC1.2 and divided mode. USB2 port is a power source for Boost charge. Quick Charge 3.0 are only enabled for USB2 port. Another power source that is USB3 supports DCP and Divided mode. The USB3+/- pins are Smart switch, they will switch to DCP or Divided mode so that connected device can receive maximum power. USB3 port is boosted by an external Boost-IC. This device runs the Boost-IC when it detects the plug insertion to USB3 port. USB1 port of FW05 is capable of controlling USB Type-C and Quick Charge 3.0 and BC1.2. It can be dual-role, source or sink. The CC1x and CC2x pins will detect the connection and the role. When the role is a sink, the USB1+/- pins will detect source capacity according to BC1.2, Divided mode or Type-C current. When the role is a source, it behaves as Quick Charge 3.0 HVDCP. In the Type-C port Buck charge with Dead battery and Electronically marked cable are supported. Power Bank application Figure 7 and 8 show typical Power Bank application with FW02 and FW05 each. Buck charge mode: Built-in battery charging via USB. Boost charge mode: Charging the device from built-in battery via USB. Table 4 Reference software vs USB functions Reference software USB Port USB Type D+/- pins Buck Charge Boost Charge Quick Charge 3.0 HVDCP USB Detection Smart switch Boost auto start-up External Boost-IC FW02 USB1 Micro-B USB1+ USB1- USB2 Type-A USB2+ USB2- USB3 Type-A USB3+ USB3- FW05 USB1 Type-C USB1+ USB1- (Source mode) (Sink mode) (Note 3) USB3 Type-A USB3+ USB3- (Note 3) Communication channel detects the Sink connection. |
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