MP21148 Datasheet: Step-down Converter





MP21148 Step-down Converter Datasheet

Part Number MP21148
Description Step-down Converter
Manufacture MPS
Total Page 14 Pages
PDF Download Download MP21148 Datasheet PDF

Features: MP21148 1A, Synchronous, Step-Down Conve rter with CCM DESCRIPTION The MP21148 is a monolithic, step-down, switch-mode converter with built-in, internal powe r MOSFETs. It can achieve 1A of continu ous output current from a 2.3V-to-5.5V input voltage with excellent load and l ine regulation. The output voltage can be regulated as low as 0.6V. The consta nt-on-time control scheme in forced CCM provides a fast transient response, lo w output voltage ripple, and eases loop stabilization. Fault protections inclu de cycle-bycycle current limiting and t hermal shutdown. The MP21148 is availab le in an ultra-small QFN-6 (1.0mmx1.5mm ) package and requires a minimal number of readily available, standard, extern al components. The MP21148 is ideal for a wide range of applications including high-performance DSPs, wireless power, portable and mobile devices, and other low-power systems. FEATURES  2.4MH z Switching Frequency  EN for Power Sequencing  Wide 2.3V-to-5.5V Operating Input Range  Output Adjus.

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MP21148
1A, Synchronous, Step-Down Converter
with CCM
DESCRIPTION
The MP21148 is a monolithic, step-down,
switch-mode converter with built-in, internal
power MOSFETs. It can achieve 1A of
continuous output current from a 2.3V-to-5.5V
input voltage with excellent load and line
regulation. The output voltage can be regulated
as low as 0.6V.
The constant-on-time control scheme in forced
CCM provides a fast transient response, low
output voltage ripple, and eases loop
stabilization. Fault protections include cycle-by-
cycle current limiting and thermal shutdown.
The MP21148 is available in an ultra-small
QFN-6 (1.0mmx1.5mm) package and requires
a minimal number of readily available, standard,
external components.
The MP21148 is ideal for a wide range of
applications including high-performance DSPs,
wireless power, portable and mobile devices,
and other low-power systems.
FEATURES
2.4MHz Switching Frequency
EN for Power Sequencing
Wide 2.3V-to-5.5V Operating Input Range
Output Adjustable from 0.6V
Up to 1A of Output Current
120mΩ and 80mΩ Internal Power MOSFET
Switches
Output Discharging
100% Duty Cycle
Short-Circuit Protection (SCP) with Hiccup
Mode
Stable with Low ESR Output Ceramic
Capacitors
Available in a QFN-6 (1.0mmx1.5mm)
Package
Continuous Conduction Mode (CCM)
APPLICATIONS
Wireless/Networking Cards
Portable and Mobile Devices
Battery-Powered /Wearable Devices
Low-Voltage I/O System Power
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
VIN SW
OUT
MP21148
EN FB
GND
L1
1μH
R1
200k
R2
200k
VOUT
1.2V/1A
C2
10μF
MP21148 Rev. 1.1
www.MonolithicPower.com
2/16/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
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