AP3377 USB PD3.1 Sink Controllers

Diodes AP33771C and AP33772S USB Type-C® Power Delivery (PD) 3.1 extended power range (EPR) sink controllers are embedded into equipment that use a USB Type-C socket as the power supply source. The products comply with USB PD specification Rev. 3.1 V1.2 and support PD3.1 EPR/AVS up to 28 V and SPR/PPS up to 21 V.

The AP33771C has a preloaded power menu, making it simpler to use; the AP33772S includes an I2C interface that provides greater flexibility for more sophisticated designs. Both devices have built-in application firmware that automatically carries out the PD3.1 negotiation procedure with the attached USB PD3.1-compliant charger to obtain the required power levels. They also drive an external LED (driven by one of their GPIOs) to clearly indicate charging states and potential fault situations.

The AP33771C’s power menu consists of six different output voltages and eight different output currents, both set by external resistors. It supports USB-C-to-USB-C cable compensation and Type-A source charging.

The AP33772S, using I²C interface and GPIO pins, communicates with a host MCU to determine a more flexible power profile and other intelligent power-related management functions.

The AP33771C is available in the small footprint W-DFN3030-14 (3 mm x 3 mm) package, and the AP33772S is available in the small footprint W-QFN4040-24 (4 mm x 4 mm) package.