MP2141Q
1.5A, Synchronous Step-Down Converter
with VSEL Pin
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP2141Q is a monolithic, step-down,
switch-mode converter with built-in, internal
power MOSFETs. The MP2141Q achieves
1.5A of continuous output currents from a 2.3V
to 5.5V input voltage with excellent load and
line regulation.
The constant-on-time (COT) control scheme
provides fast transient response and eases loop
stabilization. Fault protections include cycle-bycycle current limiting and thermal shutdown.
The MP2141Q is ideal for a wide range of
applications including high performance DSPs,
wireless power, portable and mobile devices,
and other low-power systems.
The MP2141Q requires a minimal number of
readily
available,
standard,
external
components and is available in an ultra-small
SOT563 package.
PFM Quiescent Current: 20μA
EN for Power Sequencing
VSEL for PFM/PWM
Wide 2.3V to 5.5V Operating Input Range
Fixed Output Voltage: 1.8V
Up to 1.5A of Output Current
120mΩ and 80mΩ Internal Power MOSFET
Switches
Output Discharging
Short-Circuit Protection (SCP) with Hiccup
Mode
Stable with Low ESR Output Ceramic
Capacitors
100% Duty Cycle
Available in a SOT563 Package
APPLICATIONS
DDR/Codec
Portable Instruments
Battery-Powered Devices
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.
TYPICAL APPLICATION
EFFICIENCY(%)
Efficiency vs. Output Current
100.000
95.000
90.000
85.000
80.000
75.000
70.000
65.000
60.000
55.000
50.000
VIN=3.6V, VOUT = 1.8V
Ba s e on VLS252010HBX‐R47M(DCR=29mΩ)
0.001
0.010
0.100
1.000
10.000
IOUT (A)
MP2141Q Rev. 1.01
www.MonolithicPower.com
2/27/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
1
MP2141Q – 1.5A SYNCHRONOUS STEP-DOWN SWITCHER WITH VSEL
ORDERING INFORMATION
Part Number*
Package
Top Marking
VOUT Range
MP2141QGTF-18
SOT563
See Below
Fixed 1.8V
* For Tape & Reel, add suffix –Z (e.g. MP2141QGTF-18–Z);
TOP MARKING
AZH: Product code of MP2141QGTF-18
Y: Year code
LLL: Lot number
PACKAGE REFERENCE
TOP VIEW
VSEL 1
6
OUT
GND
2
5
EN
VIN
3
4
SW
SOT563
MP2141Q Rev. 1.01
www.MonolithicPower.com
2/27/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
2
MP2141Q – 1.5A SYNCHRONOUS STEP-DOWN SWITCHER WITH VSEL
ABSOLUTE MAXIMUM RATINGS
(1)
Supply voltage (VIN) ....................................... 6V
VSW ................................ -0.3V (-5V for
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