Diodes Incorporated

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

Back to Quick Charging Protocol Decoders, Controllers, and Switchers


QC2.0 decoder

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The AP4370 is a decoding IC compatible to Qualcomm High Voltage Dedicated Charging Port (HVDCP) Quick Charge (QC) 2.0 protocol. It decodes the different combinations of D+/D- signals, generated by the portable device, into the related configurations of V1/V2, which can be used to change either voltage reference or voltage feedback divider resister for the controller IC to make the further constant voltage/constant current control. The AP4370 has over voltage discharge feature to accelerate output voltage decline transition. The AP4370 automatically provides 5V output configuration for the connected portable device that is not compatible to Qualcomm QC 2.0 protocol.

The AP4370 is packaged in TSOT26 and SOT26 packages.


  • Compatible to Qualcomm HVDCP Quick Charge 2.0 Protocol
  • Class A: 5V/9V/12V
  • Ultra Low Static Current: 80μA at 5V VCC
  • Wide VCC Supply Voltage: 4.5V to 15V
  • Over Voltage Discharge Feature to Accelerate Output Voltage
  • Decline Transition
  • Small Profile: TSOT26/SOT26 SMD Package in Accordance with
  • Level 3 of IPC/JEDEC J-STD-033A
  • Totally Lead-free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device


  • Chargers 
  • Adapters
  • Power Supplies
  • AC-DC

Product Specifications

Product Parameters

Protocols Supported QC2.0 (Hardwired)
Power Role Source
VCC Maximum Rating 25 V
VCC UVLO (V) 3.6 V

Related Content


Technical Documents

Recommended Soldering Techniques