MPQ2169
6V, Dual 1.4A/1.4A or 2A/0.8A
Low Quiescent Current,
Synchronous Buck with PG and SS
AEC-Q100 Qualified
DESCRIPTION
The MPQ2169 is an internally compensated,
dual, PWM, synchronous, step-down regulator
that operates from a 2.7V to 6V input and
generates an output voltage as low as 0.6V.
The MPQ2169 can be configured as a
1.4A/1.4A or 2A/0.8A output current regulator
and is ideal for powering portable equipment
that runs on a single-cell lithium-ion (Li+)
battery due to its low 60µA quiescent current.
The MPQ2169 integrates dual, 60mΩ, high-side
switches and 25mΩ synchronous rectifiers to
achieve high efficiency without an external
Schottky diode. The MPQ2169 has peak-
current-mode control and internal compensation
and is capable of low dropout configurations.
Both channels can operate at 100% duty cycle.
Full protection features include cycle-by-cycle
current limit and thermal shutdown.
The MPQ2169 requires a minimal number of
readily
available,
standard,
external
components and is available in QFN-18
(2mmx3mm) and QFN-18 (2.5mmx3.5mm)
packages.
FEATURES
2.7V to 6V Operating Input Range
1.4A/1.4A or 2A/0.8A Continuous Current
60mΩ/25mΩ R
DS(ON)
Programmed Frequency up to 3MHz
External Sync Clock up to 3MHz
180° Phase-Shifted Operation
Power Good (PG) Indicators
External Soft Start (SS) and Track
Adjustable Advanced Asynchronous Mode
(AAM) or Forced Continuous Conduction
Mode (FCCM)
Peak Efficiency >90%
Output Adjustable from 0.6V to 5.5V
100% Duty Cycle Operation
60µA Quiescent Current
Cycle-by-Cycle Over-Current Protection
(OCP)
Short-Circuit Protection (SCP) with Hiccup
Mode and Valley Current Detection
Thermal Shutdown
Available in QFN-18 (2mmx3mm) and QFN-
18 (2.5mmx3.5mm) Packages
Available in a Wettable Flank Package
Available in AEC-Q100 Grade-1
APPLICATIONS
Infotainment
Cluster
Telematics
Battery-Power Devices
Portable Instruments
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.
MPQ2169 Rev. 1.0
www.MonolithicPower.com
8/23/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
1
MPQ2169 - 6V, DUAL1.4A/1.4A OR 2A/0.8A, SYNC, BUCK REGULATOR W/ PG AND SS
TYPICAL APPLICATION
VIN
VIN1
VIN2
VCC
SW1
V
OUT1
MPQ2169
FB1
SS1
SS2
EN1
EN2
EN1
EN2
PG1
PG2
FREQ
CCM
AGND PGND1 PGND2
FB2
SW2
V
OUT2
MPQ2169 Rev. 1.0
www.MonolithicPower.com
8/23/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
2
MPQ2169 - 6V, DUAL1.4A/1.4A OR 2A/0.8A, SYNC, BUCK REGULATOR W/ PG AND SS
ORDERING INFORMATION
Part Number*
MPQ2169GDE-AEC1**
MPQ2169GRHE-AEC1**
Package
QFN-18 (2mmx3mm)
QFN-18 (2.5mmx3.5mm)
Top Marking
See Below
See Below
* For Tape & Reel, add suffix –Z (e.g.: MPQ2169GRHE–Z).
** Wettable Flank
TOP MARKING
(MPQ2169GDE-AEC1)
TOP MARKING
(MPQ2169GRHE-AEC1)
BJL: Product code of MPQ2169GDE-AEC1
Y: Year code
WW: Week code
LLL: Lot number
AZZ: Product code of MPQ2169GRHE-AEC1
Y: Year code
WW: Week code
LLL: Lot number
PACKAGE REFERENCE
TOP VIEW
PG2
18
TOP VIEW
EN2
18
EN2 FREQ EN1 PG1
17
16
15
14
FREQ
17
EN1
16
PG2
1
15
PG1
PGND2
1
13
PGND1
PGND2
2
14
PGND1
SW2
2
3
12
11
SW1
VIN1
SW2
VIN2
3
13
SW1
VIN2
4
12
VIN1
SS2
4
10
SS1
SS2
5
11
SS1
FB2
6
7
8
9
10
FB1
7
5
6
8
FB2 AGND VCC CCM FB1
9
AGND
VCC
CCM
QFN-18 (2mmx3mm)
QFN-18 (2.5mmx3.5mm)
MPQ2169 Rev. 1.0
www.MonolithicPower.com
8/23/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
3
MPQ2169 - 6V, DUAL1.4A/1.4A OR 2A/0.8A, SYNC, BUCK REGULATOR W/ PG AND SS
PIN FUNCTIONS
QFN-18
(2x3)
Pin #
1
QFN-18
(2.5x3.5)
Pin #
2
Name
Description
Power ground for channel 2.
Connect PGND2 with larger copper
areas to the negative terminals of the input and output capacitors.
PGND2 must be connected to PGND1 on board externally.
Switch node connection to the inductor for channel 2.
SW2
connects to the internal high- and low-side power MOSFET switches
of the channel 2 buck.
Input supply for channel 2.
Place a decoupling capacitor to ground
close to VIN2 to reduce switching spikes.
Soft start for channel 2.
Feedback for channel 2.
FB2 is the input to the error amplifier of
channel 2. An external resistive divider connects FB2 between the
output and ground. The voltage on FB2 is compared with the internal
0.6V reference to set the regulation voltage of channel 2.
Analog ground.
Connect AGND to PGND1 and PGND2 externally on
the board.
Power supply to the internal regulator for both channels.
Decouple VCC with a 0.1 - 1µF capacitor between VCC and AGND.
AAM or forced CCM control.
Pull CCM high to enter forced CCM
mode. Pull CCM low to enter AAM mode at light load. Do not float
CCM.
Feedback for channel 1.
FB1 is the input to the error amplifier of
channel 1. An external resistive divider connects FB1 between the
output and GND. The voltage on FB1 is compared with the internal
0.6V reference to set the regulation voltage of channel 1.
Soft start for channel 1.
Input supply for channel 1.
Place a decoupling capacitor to ground
close to VIN1 to reduce switching spikes.
Switch node connection to the inductor for channel 1.
SW1
connects to the internal high- and low-side power MOSFET switches
of the channel 1 buck.
Power ground of channel 1.
Connect PGND1 with larger copper
areas to the negative terminals of the input and output capacitors.
PGND1 must connected to PGND2 on board externally.
Power good for channel 1.
Enable control for channel 1.
Frequency set.
Connect a resistor to GND to set the switching
frequency. The switching frequency can be synchronized by an
external clock via FREQ.
Enable control for channel 2.
Power good for channel 2.
PGND2
2
3
4
5
3
4
5
6
SW2
VIN2
SS2
FB2
6
7
8
7
8
9
AGND
VCC
CCM
9
10
11
12
10
11
12
13
FB1
SS1
VIN1
SW1
13
14
15
16
17
18
14
15
16
17
18
1
PGND1
PG1
EN1
FREQ
EN2
PG2
MPQ2169 Rev. 1.0
www.MonolithicPower.com
8/23/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
4
MPQ2169 - 6V, DUAL1.4A/1.4A OR 2A/0.8A, SYNC, BUCK REGULATOR W/ PG AND SS
ABSOLUTE MAXIMUM RATINGS
(1)
Supply voltage (V
IN
) .................................... 6.5V
V
SW
........................................ -0.3V to V
IN
+ 0.3V
All other pins ................................-0.3V to +6.5V
Junction temperature ................................150°C
Lead temperature .....................................260°C
Storage temperature .................. -65°C to 150°C
Continuous power dissipation (T
A
= +25°C)
(2)
QFN-18 (2mmx3mm) ............................... 1.78W
QFN-18 (2.5mmx3.5mm) ........................... 2.5W
Thermal Resistance
(3)
θ
JA
θ
JC
QFN-18 (2mmx3mm)..............70……15….°C/W
QFN-18 (2.5mmx3.5mm)........50……12….°C/W
NOTES:
1) Exceeding these ratings may damage the device.
2) 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 device to go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) Measured on JESD51-7, 4-layer PCB.
Recommended Operating Conditions
Supply voltage (V
IN
) ........................... 2.7V to 6V
Output voltage (V
OUT
) ...................... 0.6V to 5.5V
Operating junction temp. .......... -40°C to +125°C
MPQ2169 Rev. 1.0
www.MonolithicPower.com
8/23/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
5
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