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reference designMP2188

Monolithic Power Systems MP2188

Dual 3A, 5.5V, 1.2MHz, COT Synchronous Step-Down Switchers With Auto Output Discharge

Overview

TopologyBuck Converter
Input voltage3.6-5.5 V
Output 11.8 V / 3 A
Output 21.1 V / 3 A
IC revision1.0

Description

The MP2188 is a monolithic, step-down, switch-mode dual converter with internal power MOSFETs. It can achieve up to 3A continuous output current from a 2.5V–to-5.5V input voltage with excellent load and line regulation. The output voltages of two channels are 1.1V and 1.8V respectively.

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 MP2188 is available in small 2.2mmx2.6mm QFN-16 package and requires only a minimal number of readily available standard external components.

The MP2188 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
  • -Fixed Output Voltages: 1.1V & 1.8V
  • -Adjustable Output Voltage from 0.8V by external FB Resistor
  • -100% Duty Cycle in Dropout
  • -Up to 3A Output Current
  • -Low IQ: 80µA
  • -60mΩ and 30mΩ 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 2.2mm x 2.6mm QFN-16 Package

Typical applications

  • Handheld/Battery-powered Systems
  • Wireless/Networking Cards
  • Solid State Drives(SSD)
  • Low Voltage I/O System Power

More information

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L(µH)
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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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