APPLICATION NOTE R19AN0054EJ0100 R9A02G011 Rev.1.0 Nov 9, 2018 RTK-251-1PowerBank3 Instruction Manual Introduction The RTK-251-1PowerBank3 is a 3cell (series connected) Li-ion battery power bank reference board having one USB TM Type-C port. The USB Type-C port supports the Dual Role Power (DRP) Feature. When the power bank is in Sink mode, the power bank requests 5, 9, 15, 20V which is supported by a USB Power Delivery (USB PD) provider such as a USB PD AC adapter. When the power bank is in Source mode, as long as an installed battery has enough power budget, it will supply 5, 9, 12, 15, 20V which is requested by a USB PD consumer product such as a Tablet, PC, or smartphone. The RTK-251-1PowerBank3 works as DRP device and automatically detects Power provider such as a USB PD AC adapter and Power consumer such as a Tablet, PC, and smartphone that is connected to this board. Also, it changes own power role depending on the remaining battery capacities. The battery remaining capacities are always displayed on LEDs. The RTK-251-1PowerBank3 board is USB-IF PD3.0 certified and the functions and capabilities are fixed in the setting at that time. Target Device USB Power Delivery Controller (PDC): R9A02G011 Buck-Boost Battery Charger (BB-Charger): ISL95538B R19AN0054EJ0100 Rev.1.0 Page 1 of 14 Nov 9, 2018 R9A02G011 RTK-251-1PowerBank3 Instruction Manual Contents 1. Features .......................................................................................................................... 3 1.1 USB-IF PD3.0 certified configurations ...................................................................................... 5 2. Functions ........................................................................................................................ 6 2.1 Battery charging .......................................................................................................................... 6 2.2 LED function ................................................................................................................................ 7 2.3 Protection functions ................................................................................................................... 8 3. Board Setup and how to use ......................................................................................... 9 3.1 Required materials to use this board...................................................................................... 9 3.2 Board settings ........................................................................................................................... 10 3.3 Battery power connection ........................................................................................................ 11 3.3.1 Operation example of Source mode............................................................................... 11 3.3.2 Operation example of Sink mode.................................................................................... 12 4. Optional functions ........................................................................................................ 13 R19AN0054EJ0100 Rev.1.0 Page 2 of 14 Nov 9, 2018