EVQ4491M-RE-00A
2.5A, 36V, Frequency Selectable
Step-Down Converter
with Single USB Charging Port
EVQ4491M-RE-00A Rev. 1.0 www.MonolithicPower.com 1
1/19/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EVQ4491M-RE-00A Evaluation Board is
designed to demonstrate the capabilities of
MPS’ MPQ4491M. MPQ4491M integrates a
monolithic step-down switch mode converter
and one USB current limit switch with charging
port identification circuit. It achieves 2.5A
continuous output current over a wide input
supply range with excellent load and line
regulation.
The output of USB switch is current limited.
MPQ4491M provides a USB Dedicate Charging
Port (DCP) which supports Battery Charging
Specification 1.2 (BC1.2), the Divider Mode,
and 1.2V/1.2V Mode without the need of
outside user interaction.
ELECTRICAL SPECIFICATION
Parameter Symbol Value Units
Input Voltage V
IN
7-36 V
Output Voltage
V
USB
5
V
Switching Frequency
Fs 250
kHz
Output Current
I
USB
2.5
A
FEATURES
EMI Reduction Technique
14V Typical Operating Input Voltage
36V Max. Operating Input Voltage
Fixed 5V Output Voltage with Line Drop
Compensation
Accurate Output Current Limit
350kHz/250kHz/150kHz Frequency
Selectable
Programmable Line Drop Compensation
Supporting DCP schemes for BC1.2,
Divider Mode, and 1.2V/1.2V Mode
APPLICATIONS
USB Dedicated Charging Port (DCP)
Automotive Cigarette Lighter Adapters
Power Supply for Linear Chargers
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. Fo
MPS green status, please visit MPS website under Quality Assurance. “MPS”
and “The Future of Analog IC Technology” are Registered Trademarks o
Monolithic Power Systems, Inc.
ADAM (Analog Digital Adaptive Modulation), AAM (….) areTrademarks of
Monolithic Power Systems, Inc.
EVQ4491M-RE-00A EVALUATION BOARD
(L x W x H) 6.5cm x 6cm x 1.7cm
Board Number MPS IC Number
EVQ4491M-RE-00A
MPQ4491MGRE-AEC1
(QFN-25)
