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reference designMP2144

Monolithic Power Systems MP2144

2A, 5.5V, 1.2MHz, 40μA IQ, COT Synchronous Step Down Switcher

Overview

TopologyBuck Converter
Input voltage2.5-5.5 V
Output 11.2 V / 2 A
IC revision1.03

Description

The MP2144 is a monolithic, step-down, switchmode converter with internal power MOSFETs. It can achieve up to 2A continuous output current from a 2.5V–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 condition protections include cycle-by-cycle current limiting and thermal shutdown.The MP2144 is available in small TSOT23-8 package and requires only a minimal number of readily available standard external components.The MP2144 is ideal for a wide range of applications including high-performance DSPs, FPGAs, smartphones, portable instruments, and DVD drivers.

Features

  • Wide 2.5V-to-5.5V Operating Input Range
  • Output Voltage as Low as 0.6V
  • 100% Duty Cycle in Dropout
  • Up to 2A Output Current
  • Low IQ: 40µA
  • 90mΩ and 60mΩ Internal Power MOSFET Switches
  • Default 1.2MHz Switching Frequency
  • EN and Power-Good for Power Sequencing
  • Cycle-by-Cycle Over-Current Protection
  • Auto Discharge at Power-Off
  • Short-Circuit Protect with Hiccup Mode
  • Stable with Low-ESR Output Ceramic Capacitors
  • Available in a TSOT23-8 Package

Typical applications

  • Wireless cards
  • Handheld/Battery-powered Systems
  • Low Voltage I/O System Power
  • Networking Cards

More information

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L(µH)
IRP,40K(A)
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744777001
SPECWE-PD SMT Power Inductor, 1 µH, 8.6 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Inductance1 µH
Performance Rated Current8.6 A
Saturation Current10.2 A
DC Resistance10 mΩ
Self Resonant Frequency100 MHz
Size7345 
VersionStandard 
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