FSA831 Datasheet | onsemi

Features USB Detection Sw itch Type V BUS Package Ordering Inf ormation USB Battery Charging Rev. 1.2 Supports Data Contact Detect (DCD) Dead Battery Provision (DBP) w ith 30-Minute Timer Isolation Sw itch Closes for Charging Dow nstream Port (CDP) Standard Dow nstream Port (SDP) 28V Over-Voltage Tolerance -2V Under-Voltage Tolerance 10-Lead Micro Pak™ 1.6 x 2.1mm, 0.5mm Pitch FSA831L10X Applications - MP3, Mobile Internet Device (MID), Cell Phone, PDA, Digital Camera, Notebook and Netbook Description The FSA831 is a charger-detection IC w ith an integrated isolation sw itch for use w ith a micro/mini USB port. The FSA831 detects battery chargers and is pliant w ith USB Battery Charging Specification, Rev 1.2 (BC1.2). The algorithm incorporates Data Contact Detection (DCD), w hich ensures that the shorter, inner pins of the USB connector are making contact prior to continuing w ith battery charger detection. The device determines if a Dedicated Charging Port (DCP), Charging Dow nstream Port (CDP), or a typical PC host, called a Standard Dow nstream Port (SDP), is connected. If a charger is detected, the FSA831 determines w hether the charger is a DCP or CDP. For SDP and CDP detection, an internal isolation sw itch is closed to connect the D+/D- lines of the USB cable to the resident USB transceiver w ithin the portable device. The FSA831 conforms to all the constraints for the Dead Battery Provision (DBP) w ithin the BC1.2 specification, including a 30-minute timer that cannot exceed 45 minutes, per BC1.2. Related Resources Typical Application System on Chip (So C) CHG_AL_N GOOD_BAT USB PHY DM_HOST DP_HOST SW_OPEN Li+ Charger CHG_DET Bat Regulator and Sw itch V BUS Control DM_CON DP_CON Charger Detect USB Port VBUS_IN DD+ ID GND Figure 1. Mobile Phone Exam ple © 2011 Semiconductor ponents Industries, LLC. October-2017, Rev. 2 Publication Order Number: FSA831/D Pin Configurations CHG_DET...