The FUSB15101 is a highly integrated USB Power Delivery (PD)
power source controller that can control the opto−coupler in the
secondary side of an AC−DC adapter or a DC−DC port power
regulator.
The FUSB15101 enables a complete solution for USB power
sources through optimized hardware peripherals and complete
open−source embedded firmware all in a compact solution.
It integrates a highly efficient Arm Cortex−M0+ processor with
custom designed peripherals to seamlessly support USB PD 3.1 source
applications. The FUSB15101 supports the PPS specification in USB
PD, with a minimum of 3.3 V and a maximum of 21 V output voltage
control. It includes Constant Voltage (CV) and Constant Current Limit
(CL) control blocks, various protection mechanisms and high voltage
tolerance on connector pins.

Key Features
• 32−bit Arm Cortex−M0+ Processor
• 32 KB OTP (One Time Programmable) Program Memory
• USB PD 3.1 with PPS Support
 Power Management Unit with VIN Support from 3.3 V to 24 V
 Integrated VCONN Supply for Interrogating E−Marked Cables
• Idle and Sleep Modes to Meet CoC and DoE Requirements
• Peripherals
 USB Type−C / PD Detection and Communication Layer
 VBUS NMOS Gate Driver for Load Switch Control
 VBUS Discharge Functionality
 Programmable Constant Voltage & Constant Current Control
 Two 10−bit DAC’s for Precise Voltage and Current Control
 Two NTC Temperature Measurements
 10−bit ADC for Voltage, Current and Temperature Reporting
 Two General Purpose 32−bit Timers
 Watchdog Timer (WDT)
 I2C Master/Slave Peripheral
 UART on D+/− Pins
• Output Fault Protection
 Over−Voltage
 Under−Voltage
 Over−Current
 Over−Temperature
• 20−pin QFN Package (4 mm x 4 mm, 0.5 P)

Typical Applications
• Wall Chargers for Mobile Phones and
Tablets and Computing Devices
• AC−DC USB PD Compliant Adapters
• Power Banks
• Cigarette Lighter Adapters