Diodes Incorporated
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AP43770 (Not Recommended for new design)

NRND = Not Recommended for New Design

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The AP43770 is a USB Type-C power delivery controller dedicated to power source applications with legacy capability. It is compliant with USB Type-C specification rev1.2 and USB power delivery (PD) specification Rev3.0 V1.1.

The AP43770 can support PPS APDO with 20mV/step resolution and 50mA/step current resolution for power management. Also, it supports Qualcomm Quick Charge 4 for mobile market. In addition, cable-loss compensation and SOP command for e-Marker detection are embedded too.

In consideration of customer applications, AP43770 supports options for non-PD protocols like BC 1.2, QC3.0/QC2.0, and other legacy protocols with auto-detection and maintains backwards compatibility with the existing environment. There are rich power-features embedded on the chip and can be configured through CC channel.


  • Compliant with USB PD Rev3.0 V1.1
  • Support VOUT 20mV/Step from 3V to 20V
  • Support Current Limit 50mA/Step up to 6A
  • USB PD Transceiver with High Noise Immunity
  • Built-In CC/CV Controller
  • Support e-Marker Cable Detection
  • Built-In VCONN Switch with OCP Protection
  • Cable Compensation for Different Load Condition
  • Programmable for Configuration and ID Code
  • Support OCP/SCP/OTP/UVP with Auto-Restart
  • Built-In 5V/1.8V LDO
  • Low Standby Current : 550μA
  • Maximum 32V Input Voltage Rating
  • Support Non-USB PD Protocol Options
  • Qualcomm QC 3.0/2.0 Built-In
  • BC 1.2 Legacy Built-In
  • TID(11090017) for USB PD 3.0 PPS Compliance Test
  • Package: TSSOP-16
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)


• AC Adapters
• Car Chargers
• USB PD Converter
• Power Hubs
• Power Banks

Product Specifications

Product Parameters

Current Sense Reference(5V/9V/12V) N/A
OperatingCurrent (µA) 4500
Protocol Compatible USB PD3.0
VCC UVLO (V) 2.8
VCC Maximum Rating 25
Voltage Sense Reference(5V/9V/12V) N/A

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