MP2141Q Datasheet: Synchronous Step-Down Converter





MP2141Q Datasheet PDF Download

Part Number MP2141Q
Description Synchronous Step-Down Converter
Manufacture MPS
Total Page 22 Pages
PDF Download Download MP2141Q Datasheet PDF

Features: MP2141Q 1.5A, Synchronous Step-Down Conv erter with VSEL Pin DESCRIPTION The MP 2141Q is a monolithic, step-down, switc h-mode converter with built-in, interna l power MOSFETs. The MP2141Q achieves 1 .5A of continuous output currents from a 2.3V to 5.5V input voltage with excel lent load and line regulation. The cons tant-on-time (COT) control scheme provi des fast transient response and eases l oop stabilization. Fault protections in clude cycle-bycycle current limiting an d thermal shutdown. The MP2141Q is idea l for a wide range of applications incl uding high performance DSPs, wireless p ower, portable and mobile devices, and other low-power systems. The MP2141Q re quires a minimal number of readily avai lable, standard, external components an d is available in an ultra-small SOT563 package. FEATURES  PFM Quiescent C urrent: 20μA  EN for Power Sequenci ng  VSEL for PFM/PWM  Wide 2.3V t o 5.5V Operating Input Range  Fixed Output Voltage: 0.61V/1.8V  Up to 1.5A of Output Current  120mΩ and 80mΩ.

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MP2141Q
1.5A, Synchronous Step-Down Converter
with VSEL Pin
DESCRIPTION
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-by-
cycle 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.
FEATURES
PFM Quiescent Current: 20μA
EN for Power Sequencing
VSEL for PFM/PWM
Wide 2.3V to 5.5V Operating Input Range
Fixed Output Voltage: 0.61V/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
VIN
5V
C1
10μF
EN
PFM PWM
VIN SW
OUT
MP2141Q-18
or MP2141Q-06
EN
VSEL
GND
L1
0.47μH
VOUT
1.8V/1.5A
or 0.61V/1.5A
C2
22μF
100.000
95.000
90.000
85.000
80.000
75.000
70.000
65.000
60.000
55.000
50.000
Efficiency vs. Output Current
VIN=3.6V
Base on VLS252010HBX-R47M(DCR=29mΩ)
Vout=1.8V
Vout=0.61V
0.001
0.010
0.100
IOUT (A)
1.000
MP2141Q Rev. 1.0
www.MonolithicPower.com
2/6/2018
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2018 MPS. All Rights Reserved.
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