Document Number: MC34825 Freescale Semiconductor Rev 4.0, 9/2014 Technical Data Micro-USB Interface IC 34825 Supporting Universal Charging Solution and Wired Accessories The 34825 is designed to support the Universal Charging Solution INTERFACE IC (UCS) recommended by the OMTP (Open Mobile Terminal Platform), as well as to use the same 5-pin micro or mini-USB connector for other wired accessories. The 34825 supports various types of external power supplies to charge the battery, such as a dedicated AC/DC adapter or a USB port. It has functions built-in to identify the type of the power supply, and sets low or high charging current, based on the current capability of the power supply. The 34825 monitors the power supply, and offers an up to 28 V of overvoltage protection (OVP) to the cell phone against failed power supplies. The 34825 also contains analog switches to multiplex the five pins, to support UART and high speed (PB-FREE) USB data communication, mono or stereo audio headset with or without 98ASA00716D a microphone and a cord remote controller, manufacturing or research- 20-PIN QFN and-development (R/D) test cables, and other accessories. The 34825 monitors both the VBUS status and the resistance Applications between the ID pin and the ground to identify the accessory being Cell phones plugged into the mini or micro-USB connector. A high-accuracy 5-bit MP3/MP4 players ADC is offered to distinguish 32 levels of ID resistance that are Portable voice recorders assigned to buttons in a cord remote controller or to identification (ID) resistors of accessories. After identifying the attached accessory, the USB universal charging solution (USC-OMTP) 34825 sends an interrupt signal to a host IC and the host IC can Supports mini/micro - USB connector 2 configure the analog switches via an I C serial bus for further actions. UART and USB high speed communication When the accessory is detached from the cell phone, an interrupt signal Remote control/accessories IDs is also sent to inform the host. This device is powered using SMARTMOS technology. Features Identifies various types of power supplies to set low or high battery- charging current levels Internal power switch to offer OVP against up to 28 V failed power supply input Supports stereo/mono headset with or without microphone and remote controller with pure passive components Supports USB or UART R/D test cables High-speed (480 Mbps) USB 2.0 compliant Supports 32 ID resistance values with a high accuracy 5-bit ADC Accessory attachment and detachment detection with an interrupt signal to the host IC 2 I C interface 10 A quiescent current in Standby mode Baseband 34825 VDDIO GPIO VDD Charger INT LI+ I2C SDA I2C I2C SCL RXD ISET UART TXD OUT D+ V VBUS BUS USB XCVR D- SPK L ID ID AUDIO SPK R DP D+ MIC DM D- GND GND USB Connector Figure 1. 34825 Simplified Application Diagram Freescale Semiconductor, Inc., 2010 - 2014. All rights reserved.ORDERABLE PARTS ORDERABLE PARTS Table 1. Orderable Part Variations (1) Temperature (T ) Package Part Number A MC34825EP -40 C to 85 C 3.0 mm x 3.0 mm UTQFN Notes 1. To order parts in Tape and Reel, add the R2 suffix to the part number. 34825 Analog Integrated Circuit Device Data 2 Freescale Semiconductor