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reference designMP2148

Monolithic Power Systems MP2148

1A Synchronous Step-down Converter with 11µA Iq in Ultra-Small 1x1.5mm QFN

Overview

TopologyBuck Converter
Input voltage5 V
Switching frequency1650-2750 kHz
Output 11.2 V / 1 A
IC revision1.11

Description

The MP2148 is a monolithic, step-down, switch-mode converter with built-in internal power MOSFETs. It achieves 1A continuous output current from a 2.3V-to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V.

The Constant-On-Time control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-by-cycle current limiting and thermal shutdown.

The MP2148 is available in an ultra-small QFN-6 (1.0mmx1.5mm) package and requires a minimal number of readily available standard external components.

The MP2148 is ideal for a wide range of applications including high performance DSPs, wireless power, portable and mobile devices, and other low-power systems.

Features

  • -Low IQ: 11μA
  • -2.2MHz Switching Frequency
  • -EN for Power Sequencing
  • -Power Good Only for Fixed Output Version
  • -Wide 2.3V-to-5.5V Operating Input Range
  • -Output Adjustable from 0.6V
  • -Up to 1A Output Current
  • -120mΩ and 80mΩ Internal Power MOSFET Switches
  • -Output Discharge
  • -Short-Circuit Protection with Hiccup Mode
  • -Stable with Low ESR Output Ceramic Capacitors
  • -Available in a QFN-6 (1.0mmx1.5mm) Package

Typical applications

  • Portable and Mobile Devices
  • Low Voltage I/O System Power
  • •Wireless/Networking Cards
  • Battery Powered /Wearable Devices

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438322010
SPECWE-MAPI SMT Power Inductor, 1 µH, 2.65 A
Simu­lation
Availability
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Downloads10 files

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CAD files ZIP

Electric models ZIP

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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1 µH
Performance Rated Current2.65 A
Saturation Current @ 30%4.4 A
DC Resistance107 mΩ
Self Resonant Frequency100 MHz
Operating Voltage80 V
MountSMT 
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