STUSB1702 Datasheet USB Type-C source controller with TX/RX line driver and BMC Features Type-C attach and cable orientation detection Power role support: source Integrated power switch for V supply: CONN programmable current limit up to 600 mA overcurrent, overvoltage, and thermal protection undervoltage lockout IC interface and interrupt Integrated V voltage monitoring BUS Integrated V and V discharge path BUS CONN Integrated BMC transceiver V switch gate driver BUS Short-to-V protection on CC pins (22 V) and V pins (28 V) BUS BUS Accessory mode support Dual power supply (V and/or V ): SYS DD V = 3.0 V 5.5 V SYS V = 4.1 V 22 V DD Temperature range: -40 C up to 105 C ESD: 4 kV HBM - 1.5 kV CDM AEC-Q100 qualified Compliant with: Maturity status link USB Type-C rev 1.2 STUSB1702 USB PD rev 2.0 Device summary Compatible with: Order code STUSB1702YQTR USB PD rev 3.0 AEC-Q100 Yes QFN24 EP 4x4 mm Applications Package wettable flanks Car charger, car infotainment Temp. range - 40 C up to 105 C Smart plugs, wall adapters, and chargers Marking 1702Y Power hubs and docking stations Any Type-C source device Description The STUSB1702 is a generic IC, in a 20 V technology it addresses a USB Type-C port management on the host side. It is designed for a broad range of applications and can handle the following USB Type-C functions: attach detection, plug orientation detection, host to device connection, V support, and V CONN BUS configuration. It also provides a USB PD TX/RX line driver and BMC (bi-phase mark coding) transceiver which allow USB PD negotiation and an alternate mode through an external MCU. DS12664 - Rev 1 - July 2018 www.st.com For further information contact your local STMicroelectronics sales office.STUSB1702 Functional description 1 Functional description The STUSB1702 is a USB Type-C controller IC. It is designed to interface with the Type-C receptacle on host side. It is used to establish and manage the source-to-sink connection between two USB Type-C host and device ports. The STUSB1702 major role is to: 1. Detect the connection between two USB Type-C ports (attach detection) 2. Establish a valid source-to-sink connection 3. Determine the attached device mode 4. Resolve cable orientation and twist connections to establish USB data routing (MUX control) 5. Configure and monitor V power path BUS 6. Manage V power capability: USB default, Type-C medium or Type-C high current mode BUS 7. Configure V when required CONN 8. Support USB PD negotiation The STUSB1702 also provides: Low power standby mode IC interface and interrupt Start-up configuration customization: static through NVM and/or dynamic through IC High voltage protection Accessory mode detection Figure 1. Functional block diagram VREG 1V2 VDD VSYS GND VREG 2V7 RESET SCL Power Supply Power On I2C Interface VREG 1V2 Generation VREG 2V7 Oscillator NVM Reset & SDA VPU I2C REGx Controller Registers ALERT RESET I2C REGx VDD1V2 VPU VDD2V7 RESET CLK I2C REGx CC1GND CC1 VBUS SENSE VCONN Monitoring CC Lines CC Control VBUS Monitoring VCONN VBUS EN SRC & Power Switches Interface Logic & Control CC2 A B SIDE CC2GND BMC Transceiver BMC Clock Recovery Tx Enc. / Rx Dec. MISO MOSI TX EN SCLK NSS High voltage pins DS12664 - Rev 1 page 2/38