DESCRIPTION

The MPQ4475-E integrates a monolithic, stepdown,

switch-mode converter with a single USB

current-limit switch and charging port

identification circuit. The MPQ4475-E achieves

2.5A of continuous output current with excellent

load and line regulation over a wide input

supply range.

The output of the USB switch is current-limited.

The MPQ4475-E provides a USB-dedicated

charging port (DCP), which supports battery

charging specification 1.2 (BC1.2), divider

mode, and 1.2V/1.2V mode without the need for

outside user interaction. The output voltage has

programmable line drop compensation.

Full protection features include hiccup current

limiting, output over-voltage protection (OVP),

and thermal shutdown.

The MPQ4475-E requires a minimal number of

readily available, standard, external

components and is available in a QFN-25

(4mmx4mm) package.

FEATURES

 Hiccup Over-Current Mode for CR Load

 Wide 7V to 36V Operating Input Voltage

Range

 Fixed 5V Output Voltage with Line Drop

Compensation

 Accurate USB Output Current Limit

 40mΩ/32mΩ Low RDS(ON) Internal Buck

Power MOSFETs

 24mΩ Low RDS(ON) Internal USB Power

MOSFET

 350kHz / 250kHz / 120kHz Frequency

Selectable

 Frequency Dithering for 120kHz

 Programmable Line Drop Compensation

 Output Over-Voltage Protection (OVP)

 Hiccup Current Limit

 Supports DCP Scheme for BC1.2, Divider

Mode, and 1.2V/1.2V Mode

 ±8kV HBM ESD Rating for USB, DP, and

DM Pins

 Available in a QFN-25 (4mmx4mm)

Package

 Available in AEC-Q100 Grade 1

APPLICATIONS

 Automotive USB Smart Charging Ports