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MP5402M Datasheet(PDF) 9 Page - Monolithic Power Systems

Part No. MP5402M
Description  5A, 36V, Frequency Selectable Step-Down Converter with Smart Dual USB Charging Ports
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Maker  MPS [Monolithic Power Systems]
Homepage  http://www.monolithicpower.com
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MP5402M Datasheet(HTML) 9 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
9
10/10/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
PIN FUNCTIONS
QFN 4x4
Pin #
Name
Description
1, 2
USB1
USB1 output.
3, 15, 25
OUT
Buck output. OUT is the power input for USB1 and USB2. The internal circuit
senses OUT voltage and regulates it at 5V.
4, 14
IN
Supply voltage. The MP5402M operates from a 7V to 36V input voltage. CIN
prevents large voltage spikes at the input. Place CIN as close to the IC as
possible. IN is the drain of the internal power device and also provides the
power supply for the entire chip.
5, 6, 12, 13
PGND
Power ground. PGND is the reference ground of the regulated output voltage.
PGND requires extra care during PCB layout. Connect to GND with copper
traces and vias.
7
FREQ
Frequency selection. Floating FREQ sets the frequency at 150kHz. Pulling
FREQ to ground sets the frequency at 250kHz. Pulling FREQ to 5V sets the
frequency at 350kHz.
8
EN
On/off control input.
9, 10, 26
SW
Switch output. Use a wide PCB trace to make the connection.
11
BST
Bootstrap. A 0.1μF capacitor is connected between SW and BST to form a
floating supply across the high-side switch driver.
16, 17
USB2
USB2 output.
18
AGND
Analog ground. Connect AGND to PGND.
19
VCC
Internal 5V LDO regulator output. Decouple with a 0.22µF capacitor.
20
VDROP
Line drop compensation selection. Refer to the EC table for detailed
specifications.
21
DM2
D- data line to USB connector. Input/output is used for handshaking with
portable devices.
22
DP2
D+ data line to USB connector. Input/output is used for handshaking with
portable devices.
23
DP1
D+ data line to USB connector. Input/output used for handshaking with
portable devices.
24
DM1
D- data line to USB connector. Input/output is used for handshaking with
portable devices.


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