MPQ8636
High Efficiency, 4/10/20A, 18V
Synchronous, Step-Down Converter
The Future of Analog IC Technology
Input
FEATURES
Part Number Package OVP
Voltage
Wide 4.5V-to-18V Operating Input Range
Non-
MPQ8636GLE-4 QFN(3x4mm) 4.5V to 18V
Latch
4A/10A/20A Output Current
MPQ8636GLE-
Optimal Low R (ON) Internal Power
DS
QFN(3x4mm) 4.5V to 18V Latch-off
10
MOSFETs Per Device
MPQ8636HGLE- Non-
QFN(3x4mm) 4.5V to 18V
Proprietary Switching-LossReduction
10 Latch
Technique
MPQ8636GVE- Non-
QFN(5x4mm) 4.5V to 18V
20 Latch Adaptive COT for Ultrafast Transient
Response
0.5% Reference Voltage Over 0C to 70C
DESCRIPTION
Junction Temperature Range
The MPQ8636 is a fully-integrated, high-
Programmable Soft-Start Time
frequency, synchronous, rectified, step-down,
Pre-Bias Start-Up
switch-mode converter. It offers a very compact
Programmable Switching Frequency from
solution to achieve 4A/10A/20A output current
200kHz to 1MHz
over a wide input supply range, with excellent
Non-Latch OCP, OVP, and Thermal
load and line regulation. The MPQ8636 operates
Shutdown
at high efficiency over a wide output-currentload
Output Adjustable from 0.611V to 13V
range.
APPLICATIONS
The MPQ8636 uses Constant-On-Time (COT)
Telecom and Networking Systems
control to provide a fast transient response and
ease loop stabilization. Base Stations
Servers
An external resistor programs the operating
Personal Video Recorders
frequency from 200kHz to 1MHz, and the
Flat-Panel Televisions and Monitors
frequency keeps nearly constant as input
Distributed Power Systems
supply varies with the feed-forward
compensation.
All MPS parts are lead-free, halogen free, and adhere to the RoHS
directive. For MPS green status, please visit MPS website under Quality
Assurance.
The default under-voltage lockout threshold is
MPS and The Future of Analog IC Technology are Registered
internally set at 4.1V, but a resistor network on
Trademarks of Monolithic Power Systems, Inc.
the enable pin can increase this threshold. The
soft-start pin controls the output-voltage startup
ramp. An open-drain power-good signal
indicates that the output is within nominal
voltage range.
It has fully-integrated protection features that
include over-current protection, over-voltage
protection and thermal shutdown.
The MPQ8636 requires a minimal number of
readily-available standard external components
and is available in a 16-Pin QFN 3mm4mm or a
29-Pin QFN 5mm4mm package.
MPQ8636 Rev. 1.32 www.MonolithicPower.com 1
6/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2017 MPS. All Rights Reserved. MPQ8636 4/10/20A, 18V, SYNCHRONOUS, STEP-DOWN CONVERTER
TYPICAL APPLICATION
V
IN
BST
IN
C3
L1
R
C1 FREQ
V
SW OUT
FREQ
R4 C4
MPQ8636-10
R1 C2
EN
ON/OFF
MPQ8636H-10
FB
VCC
R2
C5 R3
SS
C6
PG
PGND AGND
MPQ8636 Rev. 1.32 www.MonolithicPower.com 2
6/7/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2017 MPS. All Rights Reserved.