The FA3210 is a USB charging port controller and power switch with an integrated USB 2.0 high-speed data line (D+/D-) switch. FA3210 provides the electrical signatures on D+/D- to support charging schemes listed under Feature Description. FA tests charging of popular mobile phones, tablets, and media devices with the FA3210 to ensure compatibility with both BC1.2 compliant, and non-BC1.2 compliant devices. In addition to charging popular devices, the FA3210 also supports two distinct power management features, namely, power wake and port power management (PPM) through the /STATUS pin. Power wake allows for power supply control in S4/S5 charging and PPM the ability to manage port power in a multi-port application. Additionally, the system wake up (from S3) with a mouse/keyboard (both low speed and full speed) is fully supported in the FA3210. The FA3210 78mΩ power-distribution switch is intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. Two programmable current thresholds provide flexibility for setting current limits and load detect thresholds.


  • D+/D- CDP/DCP Modes per USB Battery Charging Specification 1.2 (BC1.2)
  • D+/D- Shorted Mode per Chinese Telecommunication Industry Standard YD/T 1591-2009
  • Supports Non-BC1.2 Charging Modes by Automatic Selection:
    • ■ D+/D- Apple Divider Modes 2.0V/2.7V and 2.7V/2.0V
    • ■ D+/D- Samsung 1.2V Mode
  • Supports Sleep-Mode (S3) Charging and Mouse/Keyboard Wakeup
  • Load Detection for Power Supply Control in S4/S5 Charging and Port Power Management in all Charge Modes
  • Compatible with USB 2.0 and 3.0 Power Switch Requirements
  • Integrated 78mΩ (Typical) High-Side MOSFET
  • Adjustable Current-Limit up to 3A (Typical)
  • Operating Range: 4.5V to 5.5V
  • Max Device Current:
    • ■ 2μA When Device Disabled
    • ■ 270μA When Device Enabled
  • 8kV ESD Rating on DM/DP Pins
  • QFN 3x3mm²-16L Package
  • UL Listed File No. E501281 and CB certified


Part No. Vin_min (V) Vin_max (V) RON (mΩ) Output Discharge OTP OCP Load Detection Current Limit BC1.2 Charging Mode Sleep-Mode Charging Sleep-Mode Wake Up
4.5 5.5 78 SDP, CDP, DCP_Shorted, DCP Auto with Divider1~2, Samsung 1.2V Mode Mouse/Keyboard