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MP5402M Datasheet(PDF) 13 Page - Monolithic Power Systems

Part No. MP5402M
Description  5A, 36V, Frequency Selectable Step-Down Converter with Smart Dual USB Charging Ports
Download  17 Pages
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Maker  MPS [Monolithic Power Systems]
Homepage  http://www.monolithicpower.com
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MP5402M Datasheet(HTML) 13 Page - Monolithic Power Systems

 
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MP5402M – STEP-DOWN CONVERTER WITH SMART DUAL USB CHARGING PORTS
MP5402M Rev.1.0
www.MonolithicPower.com
13
10/10/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
Since the trace resistance is different for
different
cables,
the
MP5402M
provides
selectable line drop compensation through
VDROP. The line drop compensation amplitude
increases linearly as the load current increases;
it also has an upper limitation.
USB Output Over-Voltage Protection
In order to protect the device at the cable
terminal, each USB switch output has an
independently dynamic over-voltage protection
threshold. Based on different USB loading
currents, the MP5402M adjusts the OVP
threshold accordingly.
The intelligent line drop compensation and
dynamic over-voltage protection control scheme
ensure that the voltage at the cable terminal
meets the 4.75V-5.25V specifications.
USB Output Discharge
Each USB portion involves a discharge function
that provides a resistive discharge path for the
external output capacitor. The function is active
when the part is disabled (input voltage is under
UVLO, EN off) and is done in a very limited time.
Auto Detection
The MP5402M integrates the USB dedicated
charging port auto-detect function. This function
recognizes most mainstream portable devices. It
supports the following charging schemes:
USB battery charging specification BC1.2/
Chinese
telecommunications
industry
standard YD/T 1591-2009
Divider mode
1.2V/1.2V mode
The auto-detect function is a state machine that
supports all of the DCP charging schemes above.
SYSTEM
Thermal Shutdown (TSD)
Thermal shutdown prevents the chip from
operating at exceedingly high temperatures.
When the silicon die temperature exceeds 165°C,
the
entire
chip
shuts
down.
When
the
temperature falls below its lower threshold
(145°C, typically), the chip is enabled.


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