FEATURES
 USB Type-C DRP with PD protocol Supported
– Compliant with USB Type-C Specification
Reversion 2.1
– Compliant with USB PD Specification
Reversion 3.1
 Bidirectional PD protocol for Type-C with 28 V
EPR FPDO and EPR AVS Supported
 Integrated VCONN Power for eMarker Detection
 Integrated N-MOSFET drive with soft start
 Multiple DPDM Charging Protocols Implemented
– BC1.2 DCP and Divider 3
– QC2.0, QC3.0, AFC, FCP, UFCS
 Up to 35 V Maximum Voltage Rating at USB
Type-C Connector Pins
 Programmable Constant Voltage and Constant
Current Control
 Integrated dead battery function for power
requesting as SINK
 Fault Protections including VIN OCP, SCP, UVP,
OVP and CC OVP, OCP, DPDM OVP, OTP, TSD
and so on
 32-bit RISC-V MCU with 32 kB MTP Memory
 Integrated I
2C and UART module for system
communication
 Integrated deep sleep mode for power saving
 ±4 kV HBM ESD Rating for all of Type-C
Connector Pins

APPLICATIONS
Travel Adaptor
Car Charger
Battery Powered Devices

GENERAL DESCRIPTION
HUSB251 is designed for a USB Type-C DRP product.
It can support up to multiple PDOs with programmable
voltage and current for different applications, such as
PPS PDOs, EPR PDOs. All of PDOs are fully
compliant with USB PD 3.1 Specification Rev.1.8
Besides, HUSB251 implements DPDM charging
protocols for source. Both D+ and D- pins can be
configured to support QC2.0, QC3.0, AFC, FCP, UFCS
and divider 3 mode which provide excellent
compatibility for the legacy devices.
It integrates an GATE driver to enable between VBUS
and VIN to protect the devices connected with Type-C
connector.
The high voltage tolerance and protections at CC1,
CC2, D+ and D- pins provides more reliability for the
system.