CEP8122A单路识别IC.pdf

~ 1 ~ ChipExtra Semiconductor CEP8122 Rev 1.0, March, 2015 USB Charging Port Controller FEATURES ? Supports Battery Charging Specification 1.2 ? Supports Chinese Communications Industry Standard YD/T 1591-2009 ? Auto detect and charge for Apple, Samsung, and BC compliant devices, ? Ultra low power consumption Application - USB universal wall charger - Car charger - Power bank - Wall wart PIN ASSIGNMENT Figure 1 –CEP8122 Pinout DESCRIPTION The CEP8122 is a USB fast-charging controller which complies with USB Battery Charging Specification (abbrev. as BC). Before the USB BC is released, most handheld devices have different charging mechanisms that are not compliant with each other. Generally speaking, old wall-chargers are useless when you have new handheld devices. Now with a USB enabled wall-charger, it provides unified charging mechanism by traditional USB current supply (0.5A) when charging devices through USB ports. With a USB enabled wall-charger which complies with USB BC, it provides unified charging mechanism by more USB current supply (up to 1.5A) when charging devices through USB ports, so called “fast-charging” mechanism. In another word, CEP8122 is a high performance solution for “fast-charging” mechanism and it saves at most 66% of charging time. In addition, the CEP8122 will automatically detect and charge not only USB BC compliant devices, but also Apple/Samsung/RIM devices. This feature implies wide range of end product applications and provides design flexibility for system manufactures. NO CEP8122 TYPE DESCRIPTION 1 SEL I Charging mode select (internal pull-up) 1: Auto 2.4A mode 0: Auto 1A mode 2 GND P Ground 3 P5V P 5V input 4 DP I/O D+ data line to USB connector 5 DM I/O D- data line to USB connector Table 1 – CEP8122 Pin Assignment ~ 2 ~ ChipExtra Semiconductor