MPQ4559-AEC1
Industrial Grade, 1.5A, 2MHz, 55V
Step-Down Converter
AEC-Q100 Qualified
DESCRIPTION FEATURES
The MPQ4559 is a high frequency step-down Guaranteed Industrial Temp Range Limits
switching regulator with integrated internal high-
Wide 3.8V to 55V Operating Input Range
side high voltage power MOSFET. It provides
250m Internal Power MOSFET
1.5A output with current mode control for fast loop
Up to 2MHz Programmable Switching
response and easy compensation.
Frequency
140A Quiescent Current
The wide 3.8V to 55V input range accommodates
Ceramic Capacitor Stable
a variety of step-down applications, including
Internal Soft-Start
those in automotive input environment. A 12A
shutdown mode supply current allows use in Up to 95% Efficiency
battery-powered applications.
Output Adjustable from 0.8V to 52V
Available in QFN (3mm x 3mm) and
High power conversion efficiency over a wide
SOIC8E with Exposed Pad Packages
load range is achieved by scaling down the
AEC-Q100 Qualified
switching frequency at light load condition to
reduce the switching and gate driving losses.
APPLICATIONS
The frequency foldback helps prevent inductor
High Voltage Power Conversion
current runaway during startup and thermal
Automotive Systems
shutdown provides reliable, fault tolerant
Industrial Power Systems
operation.
Distributed Power Systems
By switching at 2MHz, the MPQ4559 is able to Battery Powered Systems
prevent EMI (Electromagnetic Interference) noise
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
problems, such as those found in AM radio and status, please visit MPS website under Quality Assurance. MPS and The
Future of Analog IC Technology are Registered Trademarks of Monolithic
ADSL applications.
Power Systems, Inc.
The MPQ4559 is available in small 3mm x 3mm
QFN10 and SOIC8 with exposed pad packages..
TYPICAL APPLICATION
MPQ4559 Rev. 1.01 www.MonolithicPower.com 1
5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2016 MPS. All Rights Reserved. MPQ4559 1.5A, 2MHz, 55V STEP-DOWN CONVERTER AEC-Q100 QUALIFIED
ORDERING INFORMATION
Part Number Package Top Marking
MPQ4559DN*
SOIC8E MP4559DN
MPQ4559DQ** QFN10 (3X3mm) ADD
MPQ4559DQ-AEC1 QFN10 (3X3mm) ADD
* For Tape & Reel, add suffix Z (e.g. MPQ4559DNZ)
For RoHS Compliant Packaging, add suffix LF (e.g. MPQ4559DNLFZ)
* For Tape & Reel, add suffix Z (e.g. MPQ4559DQZ)
For RoHS Compliant Packaging, add suffix LF (e.g. MPQ4559DQLFZ)
PACKAGE REFERENCE
QFN10 SOIC8 (Exposed Pad)
(1) (4)
ABSOLUTE MAXIMUM RATINGS Thermal Resistance
JA JC
Supply Voltage (V ) .................... 0.3V to +60V
IN SOIC8 (Exposed Pad) ............ 50 ...... 10 ... C/W
Switch Voltage (V ) ............ 0.5V to V + 0.5V
SW IN QFN10 (3X3mm)5012 C/W
BST to SW .................................... 0.3V to +5V
Notes:
All Other Pins ................................ 0.3V to +5V
1) Exceeding these ratings may damage the device
(2)
Continuous Power Dissipation (T = +25C)
A
2) The maximum allowable power dissipation is a function of the
maximum junction temperature T (MAX), the junction-to-
SOIC8E.2.5W J
ambient thermal resistance , and the ambient temperature
JA
QFN10 (3X3mm).2.5W
TA. The maximum allowable continuous power dissipation at
Junction Temperature .............................. 150C
any ambient temperature is calculated by P (MAX)=(T (MAX)-
D J
T )/ . Exceeding the maximum allowable power dissipation
A JA
Lead Temperature ................................... 260C
will cause excessive die temperature, and the regulator will go
Storage Temperature .............. 65C to +150C
into thermal shutdown. Internal thermal shutdown circuitry
(3)
protects the device from permanent damage.
Recommended Operating Conditions
3) The device is not guaranteed to function outside of its
Supply Voltage V .......................... 3.8V to 55V operating conditions.
IN
4) Measured on JESD51-7 4-layer board.
Output Voltage V ........................ 0.8V to 52V
OUT
Operating Junct. Temp (T ) ..... 40C to +125C
J
MPQ4559 Rev. 1.01 www.MonolithicPower.com 2
5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2016 MPS. All Rights Reserved.