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IC manufacturers Monolithic Power Systems

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reference designMP2122

Monolithic Power Systems MP2122

6V,2A, Low Quiescent Current Dual, SYNC Buck Regulator

Overview

TopologyBuck Converter
Input voltage5 V
Switching frequency800-1200 kHz
Output 11.8 V / 2 A
Output 21.2 V / 2 A
IC revision1.01

Description

The MP2122 is an internally-compensated, 1MHz fixed-frequency, dual PWM, synchronous, step-down regulator. The MP2122 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 MP2122 integrates dual 80mΩ high-side switches and 35mΩ 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 MP2122 is available in an 8-pin TSOT23-8 package.

Features

  • Dual 2A-Output Current

  • 93% Peak Efficiency

  • 80% Light-Load Efficiency

  • Wide 2.7V-to-6V Operating Input Range
  • 80mΩ and 35mΩ 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, Portable Instruments
  • DVD Drivers

More information

Products

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Data­sheet
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Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
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744311150
SPECWE-HCI SMT Flat Wire High Current Inductor, 1.5 µH, 13.8 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance1.5 µH
Performance Rated Current13.8 A
Saturation Current @ 10%4.5 A
Saturation Current @ 30%14 A
DC Resistance6.6 mΩ
Self Resonant Frequency72 MHz
MaterialSuperflux 
Packaging Unit1000 
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