MPM3686GRU Datasheet, PDF (1/19 Pages) MPS Industries, Inc. – 18V 20A Step-Down Power Module in 12x15x4mm QFN

The Future of Analog IC Technology
DESCRIPTION
The MPM3686 is an easy-to-use fully integrated
20A step-down DC/DC power module. It
integrates the DC/DC converter, power inductor,
input/output capacitors and the necessary
resistors/capacitors in a compact QFN
12mmX15mmX4mm package. This total power
solution needs as few as two external
components (one resistor and one capacitor) to
work. MPM3686 can deliver 20A output current
over a wide input supply voltage range with
excellent load and line regulation.
The MPM3686 uses Constant-On-Time (COT)
control to provide fast transient response and
ease the loop stabilization.
The default under voltage lockout threshold is
internally set around 4.1V, but a resistor
network on the enable pin can increase this
threshold. The MPM3686 has an internal LDO
to power the control circuits and the integrated
power devices. This LDO can be disabled by an
external 5V to boost the efficiency.
The MPM3686 has an internal about 3ms soft
start (SS) timer. It can be increased with an
extra SS capacitor. An open drain power good
signal indicates that the output voltage is within
nominal voltage range.
The MPM3686 has fully integrated protection
features that include over-current protection,
over-voltage protection and thermal shutdown.
MPM3686
18V 20A Step-Down Power Module
in 12x15x4mm QFN
FEATURES
 Complete 20A DC-to-DC Solution
 Wide Input Voltage Range from 2.5V:
-- 2.5V to 18V with External 5V Bias
-- 4.5V to 18V with Internal Bias
 1% Reference Voltage Over 0˚C to 70˚C
Junction Temperature Range
 Adaptive COT Control for Ultrafast
Transient Response
 Programmable Switching Frequency from
200KHz to 1MHz
 Support Pre-Bias Start Up
 Programmable Soft-Start Time with Default
3ms
 Non-latch OCP, OVP and Thermal
Shutdown
 Output Adjustable from 0.65V to 5V
 QFN-65 (12mmx15mmx4mm) Package
APPLICATIONS
 Telecom and Networking Systems
 Base Stations
 Servers
 Personal Video Recorders
 Flat Panel Television and Monitors
 Distributed Power Systems
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” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
MPM3686 Rev. 1.02
www.MonolithicPower.com
1
10/13/2016
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