DESCRIPTION
The MPQ4228-C integrates a monolithic, stepdown
switch-mode converter with a single USB
current-limit switch, as well as a Type-C 5V @
3A mode configuration channel for USB ports. It
achieves 3A of output current across a wide
input supply range, with excellent load and line
regulation.
The USB switch’s output is current-limited. The
USB port supports charging downstream port
(CDP) schemes. The USB port also supports
USB Type-C 5V @ 3A DFP mode.
Fault condition protections include hiccup
current limiting, output over-voltage protection
(OVP), DP/DM/CC1/CC2 short-to-battery
protection, and thermal shutdown (TSD).
The MPQ4228-C requires a minimal number of
readily available, standard external components,
and is available in a QFN-22 (4mmx4mm)

package.
FEATURES
 Supports BC1.2 CDP Mode
 Supports USB Type-C 5V @ 3A DFP Mode
 USB_OUT, DP/DM, CC1/CC2 Pins Shortto-
Battery Protection
 Wide 4.2V to 36V Continuous Operating
Input Range
 Passes Apple MFI R33 Certification Test
 Passes USB-IF Type-C Certification Test
 Selectable Switching Frequency (420kHz
and 2.2MHz with Spread Spectrum)
 Integrated High Bandwidth USB2.0 Data
Switch with OVP
 Adjustable Line Drop Compensation
 Accurate 3.55A and 2.85A USB Current
Limit
 Integrated 20mΩ Low RDS(ON) USB Switch
 145°C Internal Load-Shedding Entry
Temperature
 EN Shutdown Discharge Function
 Fault Indication for OCP, OVP, and OTP
 Frequency Synchronization from 200kHz to
2.2MHz
 Hiccup Current Limit for both Buck and USB
 OVP for USB Switch
 ±8kV IEC 61000-4-2 Contact Discharge
ESD Rating for CC1 and CC2 Pins
 ±8kV IEC 61000-4-2 Contact Discharge
ESD Rating with External Small ESD
Diodes on DP and DM Pins
 ±15kV IEC 61000-4-2 Air Discharge ESD
Rating for DP, DM, CC1, and CC2 Pins
 Available in a QFN-22 (4mmx4mm)
Package with Wettable Flanks
 Available in AEC-Q100 Grade 1

APPLICATIONS
 USB Charging Downstream Ports (CDP)
 USB Type-C DFP Ports
 USB Hubs