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IC manufacturers Monolithic Power Systems

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reference designMP2149

Monolithic Power Systems MP2149

6V, 1A, Low Quiescent Current Dual, SYNC Buck Regulator

Overview

TopologyBuck Converter
Input voltage2.7-6 V
Switching frequency800-1200 kHz
Output 12.5 V / 1 A
Output 23.3 V / 1 A
IC revision1.01

Description

The MP2149 is an internally-compensated, 1MHz fixed-frequency, dual PWM, synchronous, step-down regulator. The MP2149 operates from a 2.7V-to-6V input, generates an output voltage as low as 0.608V, and has a 45μAquiescent current that makes it ideal for powering portable equipment that runs on a single cell lithium-ion (Li+) battery.

The MP2149 integrates dual 100mΩ high-side switches and 40mΩ synchronous rectifiers for high efficiency without an external Schottkydiode. Peak-current mode control and internal compensation limits the minimum number of readily-available external components.

Fault-condition protections include cycle-by-cycle current limiting and thermal shutdown.

The MP2149 is available in an 8-pin TSOT23-8 package.

Features

  • Dual 1A-Output Current

  • 93% Peak Efficiency

  • 80% Light-Load Efficiency

  • Wide 2.7V-to-6V Operating Input Range
  • 100mΩ and 40mΩ Internal Power MOSFET
  • 1MHz Fixed Switching Frequency
  • Adjustable Output from 0.608V to VIN
  • 180° Phase-Shifted Operation
  • 100% Duty-Cycle Operation
  • 45μA Quiescent Current
  • Cycle-by-Cycle Over-Current Protection
  • Short-Circuit Protection with Hiccup Mode
  • Thermal Shutdown
  • Available in an 8-pin TSOT23-8 Package

Typical applications

  • Battery-Powered Devices
  • Smartphones and Feature Phones
  • Small/Handhold Devices
  • DVD Drivers
  • Portable Instruments

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT(A)
RDC max.(mΩ)
fres(MHz)
Size
Version
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
Material
Qty.
SamplesAvailability & Sample
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744310200
SPECWE-HCI SMT Flat Wire High Current Inductor, 2 µH, 8.7 A
Simu­lation
Availability
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Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

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ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance2 µH
Performance Rated Current8.7 A
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DC Resistance15.62 mΩ
Self Resonant Frequency58 MHz
Size7030 
VersionSMT 
Saturation Current @ 10%3 A
Saturation Current @ 30%9 A
DC Resistance14.2 mΩ
MaterialSuperflux 
Packaging Unit1500 
–Check availability
744777002
SPECWE-PD SMT Power Inductor, 2.2 µH, 6.9 A
Simu­lation
Availability
–
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Inductance2.2 µH
Performance Rated Current6.9 A
Saturation Current6.5 A
DC Resistance20 mΩ
Self Resonant Frequency60 MHz
Size7345 
VersionStandard 
Saturation Current @ 10%6.5 A
Saturation Current @ 30%8 A
–
–
Packaging Unit1000 
–Check availability