MPQ4347/4347J
36V, 4A, Ultra-Low Quiescent Current,
Synchronous Step-Down Converter,
AEC-Q100 Qualified
o Junction Temperature Operation from
-40°C to +150°C
o Available in AEC-Q100 Grade 1
DESCRIPTION
The MPQ4347/4347J is
a
configurable-
frequency (350kHz to 2.5MHz), synchronous,
step-down switching regulator with an integrated
internal high-side and low-side MOSFET (HS-
FET and LS-FET, respectively). The device
provides 4A of highly efficient output current
(IOUT) with fixed-frequency, zero-delay pulse-
width modulation (PWM) control to optimize
transient response.
•
Increases Battery Life:
o 1μA Low Shutdown Supply Current
o 3μA Sleep Mode Quiescent Current (IQ)
o AAM Mode Increases Efficiency Under
Light Loads
High Performance for Improved Thermals:
o Internal 60mΩ High-Side MOSFET and
35mΩ Low-Side MOSFET
Optimized for EMC/EMI:
o Configurable 350kHz to 2.5MHz
Switching Frequency (fSW)
•
•
The wide 3.3V to 36V input voltage (VIN) range
with 42V load dump support accommodates a
variety of step-down applications in an
automotive input environment. The 1μA
shutdown mode quiescent current allows the
device to be used in battery-powered
applications.
o Symmetric VIN Pinout
o Frequency Spread Spectrum Modulation
o CISPR25 Class 5 Compliant
o MeshConnectTM Flip-Chip Package
Additional Features:
•
High power conversion efficiency across the
wide load range is achieved by scaling down the
switching frequency (fSW) under light-load
conditions to reduce the switching and gate
driving losses.
o Fixed Output Options (1): 1V, 1.1V, 1.8V,
2.5V, 3.0V, 3.3V, 3.7V, 3.8V, 5V
o Power Good (PG) Output
o Synchronize to External Clock
o Synchronized to Clock Ouput
o External Soft Start
An open-drain power good (PG) signal indicates
whether the output is within 94% to 106% of its
nominal voltage.
o Over-Current Protection (OCP) with
Hiccup Mode
o Available in a QFN-17 (3mmx4mm)
Package (MPQ4347)
o Available in a QFN-19 (3mmx4mm)
Package with Wettable Flanks
(MPQ4347J)
Thermal shutdown provides reliable, fault-
tolerant operation. A high duty cycle and low-
dropout mode are provided for automotive cold-
crank conditions.
The MPQ4347 is available in a QFN-17
(3mmx4mm) package. The MPQ4347J is
available in a QFN-19 (3mmx4mm) package with
wettable flanks.
APPLICATIONS
•
•
•
Automotive Clusters
Automotive Infotainment
Advanced Driver Assistance Systems
(ADAS)
FEATURES
•
Designed for Automotive Applications:
o Survives 42V Load Dump
•
Industrial Power Systems
o Supports 3.1V Cold Crank
o Low-Dropout (LDO) Mode
o 4A Continuous Output Current (IOUT
o Continuous Operation Up to 36V
o Zero-Delay Pulse-Width Modulation
(PWM) Control
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.
)
Note:
1) See the Ordering Information section on page 3 for the exact
availability of each fixed output version. Additional output
voltages may be available. Contact MPS for details.
o 20ns Minimum On Time
MPQ4347/4347J Rev. 1.0
10/27/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2022 MPS. All Rights Reserved.
MonolithicPower.com
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