Diodes Incorporated
W DFN3030 14

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

W QFN4040 24 Type A1

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

Back to USB Type-C and USB Power Delivery IC


USB PD Controller supporting full PPS range (3.3.~21V)

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The AP43771V is a highly integrated USB Type-C® power delivery controller targeted for USB Type-C adapters and charger applications. It is compatible with Qualcomm® QC4/4+/QC5 protocol, which supports USB power delivery specification Rev3.0 V1.2 (including optional PPS support). The AP43771V can support PPS APDO (Augmented Power Data Object) with 20mV/step voltage resolution and 50mA/step current resolution for power management. Also embedded is cable-loss compensation and SOP command for e-Marker detection. The AP43771V can provide a robust protection scheme with built-in OVP/OCP/SCP/OTP features. Supporting emerging multiple Type-C PD applications, the AP43771V (W-QFN4040-24 (Type A1)) can be used for implementing smart power-sharing scheme. It monitors the status of other I2C interface connected ports and leverages the embedded MCU for command execution through I2C interface to re-allocate the desired power profile for each Type-C port. Rich power functions are embedded on the chip to reduce total BOM. A one-time-programmable ROM is provided for main firmware, and a multi-time-programmable ROM is provided for user-configuration data.


  • Compatible with USB PD Rev3.0 V1.2
  • USB-IF PD3.0/PPS Certificated TID = 1090028
  • Qualcomm QC4/4+ Protocol Certificated
  • OTP (One-Time-Programmable) for Main Firmware
  • MTP (Multi-Time-Programmable) for System Configuration
  • Built-In Regulator for CV and CC Control
  • Support SCP/OTP/OVP/UVP with Auto Restart
  • Support Power Saving Mode
  • External N-MOSFET Control for VBUS Power Delivery
  • Support e-Marker Cable Detection
  • Operating Voltage Range: 3.3V to 24V
  • Fewest External Component Count
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device 
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • Type-C USB Adapters/Chargers
  • USB PD Converters

Product Specifications

Product Parameters

Compliance (Only Automotive(Q) supports PPAP) Standard
Protocols Supported USB PD3.0/3.1/PPS/QC3.0/4/4+/5 (MCU + OTP + Hardwired)
Power Role DFP (Downstream-Facing Port) Source
I2C Support Yes (QFN4040-24)
SR Controller Embedded No
VBUS MOS Embedded Yes (QFN4040-24)
VCC Maximum Rating 24
VCC UVLO (V) 2.7