36V, 6A, Step-Down Converter with Programmable
Frequency and Spread Spectrum Option, Dual USB
Charging Ports, 135°C Load-Shedding Temp
AEC-Q100 Qualified
MPQ4488T
DESCRIPTION
The MPQ4488T integrates a monolithic, step-
down, switch-mode converter with two USB
current-limit switches and charging port
identification circuitry for each port. The
MPQ4488T achieves 6A of output current with
excellent load and line regulation over a wide
input supply range.
The output of each USB switch is current-
limited. Both USB ports support DCP schemes
for battery charging specification (BC 1.2),
divider mode, 1.2V/1.2V mode, and USB Type-
C 5V @ 3A DFP mode, eliminating the need for
outside user interaction.
Full protection features include hiccup current
limiting, output over-voltage protection (OVP),
and thermal shutdown.
The MPQ4488T requires a minimal number of
readily
available,
standard,
external
components and is available in a QFN-26
(5mmx5mm) package.
FEATURES
Wide 6V to 36V Operating Input Voltage
Range
Selectable Output Voltage: 5.1V, 5.17V, and
5.3V
90mV Line Drop Compensation
Accurate USB1/USB2 Output Current Limit
18mΩ/15mΩ Low R
DS(ON)
Internal Buck
Power MOSFETs
13mΩ/13mΩ Low R
DS(ON)
Internal
USB1/USB2 Power MOSFETs
Frequency Adjustable (250kHz to 2.2MHz)
Frequency
Spread
Spectrum
for
MPQ4488TGU-FD-AEC1/MPQ4488TGU-
FD2-AEC1
Forced Continuous Conduction Mode (CCM)
Operation
135°C Load Shedding Entry Temperature
Hiccup Current Limit for both Buck and USB
Supports DCP Schemes for BC1.2, Divider
Mode, and 1.2V/1.2V Mode
Supports USB Type-C 5V @ 3A DFP Mode
±8kV HBM ESD Rating for USB, DP, and
DM Pins
Available in a QFN-26 (5mmx5mm)
Package
Available in AEC-Q100 Grade 1
USB Dedicated Charging Ports (DCP)
USB Type-C Charging Ports
APPLICATIONS
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under Quality
Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
TYPICAL APPLICATION
VIN
12V
+
C1A
C1
100µF 50µF
IN
EN
MPQ4488T
OUT_SEL
FREQ
C
3
1µF
VCC
220nF
L1
Vout=5.17V
BST SW
4.7µH C2A
+
C2
OUT
270µF
30µF
USB1
C5
4.7µF
DM1
DP1
CC2
CC1
USB2
Type-C
C4
100
96
USB1
3A
92
88
84
C6
4.7µF
C7
1nF
DM2
DP2
CC4
CC3
AGND PGND
Type-C
USB2
3A
C8
1nF
80
0
1
2
3
4
5
6
7
MPQ4488T Rev. 1.1
www.MonolithicPower.com
12/27/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
1
MPQ4488T – STEP-DOWN CONVERTER W/ DUAL USB CHARGING PORTS, AEC-Q100
ORDERING INFORMATION
Part Number
MPQ4488TGU-AEC1*
MPQ4488TGU-FD-AEC1**
MPQ4488TGU-FD2-AEC1***
Package
QFN-26 (5mmx5mm)
Top Marking
See Below
MSL Rating
1
* For Tape & Reel, add suffix –Z (e.g.: MPQ4488TGU-AEC1–Z)
** For Tape & Reel, add suffix –Z (e.g.: MPQ4488TGU-FD-AEC1–Z)
***For Tape & Reel, add suffix –Z (e.g.: MPQ4488TGU-FD2-AEC1–Z)
DEVICE COMPARISON INFORMATION
Part Number
MPQ4488TGU-AEC1
MPQ4488TGU-FD-AEC1
MPQ4488TGU-FD2-AEC1
Frequency Spread Spectrum
No
Yes, fundamental fs is 450kHz
Yes, fundamental fs is 250kHz
TOP MARKING
MPS: MPS prefix
YY: Year code
WW: Week code
MP4488: part number
LLLLLLL: Lot number
Note: Above top marking is for MPQ4488T and MPQ4488T-FD2.
MPS: MPS prefix
YY: Year code
WW: Week code
MP4488T: part number
LLLLLLL: Lot number
FD: Part number suffix
Note: Above top marking is for MPQ4488T-FD.
MPQ4488T Rev. 1.1
www.MonolithicPower.com
12/27/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
2
MPQ4488T – STEP-DOWN CONVERTER W/ DUAL USB CHARGING PORTS, AEC-Q100
PACKAGE REFERENCE
TOP VIEW
QFN-26 (5mmx5mm)
MPQ4488T Rev. 1.1
www.MonolithicPower.com
12/27/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
3
MPQ4488T – STEP-DOWN CONVERTER W/ DUAL USB CHARGING PORTS, AEC-Q100
PIN FUNCTIONS
QFN 5x5
Pin #
Name
Description
Configuration channel.
CC1 is used to detect connections and configure the interface
1
CC1
across the USB1 Type-C cables and connectors. Once a connection is established, CC1
or CC2 is reassigned to provide power over the VCONN pin of the plug.
2
USB1
USB1 output.
3, 15, 25
OUT
Buck output.
OUT is the power input for USB1 and USB2.
Supply voltage.
IN is the drain of the internal power device and provides power to the
entire chip. The MPQ4488T operates from a 6 - 36V input voltage. An input capacitor
4, 14
IN
(C
IN
) prevents large voltage spikes from appearing at the input. Place C
IN
as close to the
IC as possible.
Power ground.
PGND is the reference ground of the regulated output voltage. PGND
5, 13
PGND
requires extra care during the PCB layout. Connect PGND with copper traces and vias.
6
AGND
Analog ground.
Connect AGND to PGND.
7
VCC
Internal 4.5V LDO regulator output.
Decouple VCC with a 1µF capacitor.
8, 9, 26
SW
Switch output.
Use a wide PCB trace to make the connection.
Bootstrap.
A 0.22µF capacitor is connected between SW and BST to form a floating
10
BST
supply across the high-side switch driver.
Buck output voltage set.
Setting OUT_SEL to a low, floating, or high connection can
11
OUT_SEL
set three different output voltages: 5.1V, 5.17V, or 5.3V.
Switching frequency program input.
Connect a resistor from FREQ to GND to set the
switching frequency. Float FREQ or connect FREQ to VCC for the default 450kHz
frequency. Connect FREQ to ground for a 250kHz internal frequency.
For the MPQ4488TGU-FD-AEC1, float FREQ or connect FREQ to VCC to achieve a
±10% frequency spread spectrum based on 450kHz. Connect a resistor from FREQ to
GND or pull FREQ to GND to set the switching frequency without a frequency spread
spectrum.
For the MPQ4488TGU-FD2-AEC1, float FREQ or connect FREQ to VCC to achieve a
±10% frequency spread spectrum based on 250KHz. Connect a resistor from FREQ to
GND or pull FREQ to GND to set the switching frequency without a frequency spread
spectrum.
USB2 output.
Configuration channel.
CC4 is used to detect connections and configure the interface
across the USB2 Type-C cables and connectors. Once a connection is established, CC3
or CC4 is reassigned to provide power over the VCONN pin of the plug.
Configuration channel.
CC3 is used to detect connections and configure the interface
across the USB2 Type-C cables and connectors. Once a connection is established, CC3
or CC4 is reassigned to provide power over the VCONN pin of the plug.
D- data line to USB2 connector.
DM2 is the input/output used for handshaking with
portable devices.
D+ data line to USB2 connector.
DP2 is the input/output used for handshaking with
portable devices.
On/off control input.
EN has an internal auto pull-up with an 8µA current source.
D+ data line to USB1 connector.
DP1 is the input/output used for handshaking with
portable devices.
D- data line to USB1 connector.
DM1 is the input/output used for handshaking with
portable devices.
4
12
FREQ
16
17
USB2
CC4
18
19
20
21
22
23
CC3
DM2
DP2
EN
DP1
DM1
MPQ4488T Rev. 1.1
www.MonolithicPower.com
12/27/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
MPQ4488T – STEP-DOWN CONVERTER W/ DUAL USB CHARGING PORTS, AEC-Q100
PIN FUNCTIONS
(continued)
QFN 5x5
Pin #
24
Name
CC2
Description
Configuration channel.
CC2 is used to detect connections and configure the interface
across the USB1 Type-C cables and connectors. Once a connection is established, CC1
or CC2 is reassigned to provide power over the VCONN pin of the plug.
(1)
ABSOLUTE MAXIMUM RATINGS
Thermal Resistance
θ
JA
θ
JC
Supply voltage (V
IN
) ...................... -0.4V to +40V
V
SW
.................................... -0.3V (-5V for <10ns)
to V
IN
+ 0.3V (43V for <10ns)
V
BST
.....................................................V
SW
+ 5.5V
V
EN
........................................... -0.3V to +10V
(2)
V
OUT
, V
USB
..................................... -0.3V to +6.5V
All other pins ................................ -0.3V to +5.5V
Continuous power dissipation (T
A
= +25°C)
(3) (8)
QFN-26 (5mmx5mm) ................................ 6.25W
Junction temperature ................................ 150°C
Lead temperature...................................... 260°C
Storage temperature .................-65°C to +150°C
QFN-26 (5mmx5mm)
JESD51-7
(7)
............................. 44 .... 9 .... °C/W
50mmx50mm 4-Layer PCB
(8)
.. 20 .... 2 .... °C/W
NOTES:
1) Absolute maximum ratings are rated under room temperature
unless otherwise noted. Exceeding these ratings may
damage the device.
2) For details on EN’s ABS max rating, please refer to the EN
Control section on page 11.
3) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
θ
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX) = (T
J
(MAX)-T
A
)/θ
JA
. Exceeding the maximum allowable power
dissipation produces an excessive die temperature, causing
the regulator to go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage. Measured on a 4-layer PCB (50mmx50mm).
4) HBM, per JEDEC specification JESD22-A114; CDM, per
JEDEC specification JESD22-C101, AEC specification AEC-
Q100-011. JEDEC document JEP155 states that 500V HBM
allows safe manufacturing with a standard ESD control
process. JEDEC document JEP157 states that 250V CDM
allows safe manufacturing with a standard ESD control
process.
5) HBM, with regard to GND.
6) The device is not guaranteed to function outside of its
operating conditions.
7) The value of
θ
JA
given in this table is only valid for comparison
with other packages and cannot be used for design purposes.
These values were calculated in accordance with JESD51-7
and simulated on a specified JEDEC board. They do not
represent the performance obtained in an actual application.
8) Measured on a four-layer PCB board, 50mmx50mm.
ESD Rating
(4)
CC1/CC2/CC3/CC4 (HBM)
(5)
...............
±5.5kV
DP1/DP2/DM1/DM2/USB1/USB2 (HBM)
(5)
±8kV
All other pins (HBM) ...................................
±2kV
All pins (CDM) ........................................
±750V
Recommended Operating Conditions
(6)
Operation input voltage range ............ 6V to 36V
Output current ........... 3A for USB1, 3A for USB2
Operating junction temp. (T
J
) ....-40°C to +125°C
MPQ4488T Rev. 1.1
www.MonolithicPower.com
12/27/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
5
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