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reference designMP2158

Monolithic Power Systems MP2158

1A, 6V, 1.5MHz, 17μA IQ, COT Synchronous Step Down Switcher In Ultra-small 2x1.5mm QFN

Overview

TopologyBuck Converter
Input voltage2.5-6 V
Output 11.2 V / 1 A
IC revision1.0

Description

The MP2158 is a monolithic step-down switch mode converter with built-in internal power MOSFETs. It achieves 1A continuous output current from a 2.5V to 6V input voltage with excellent load and line regulation. The outputvoltage can be regulated as low as 0.6V.

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

The MP2158 is available in the small QFN8 2.0x1.5mm package and requires a minimum number of readily available standard external components.

The MP2158 is ideal for a wide range of applications including High Performance DSPs, FPGAs, PDAs, and portable instruments.

Features

  • Very Low IQ: 17μA
  • Default 1.5MHz Switching Frequency
  • EN and Power Good for Power Sequencing
  • Ultra-small 2.0x1.5mm QFN8 Package
  • Wide 2.5V to 6V Operating Input Range Output Adjustable from 0.6V
  • Up to 1A Output Current
  • 118mΩ and 88mΩ Internal Power MOSFET Switches
  • Cycle-by-Cycle Over Current Protection
  • Short Circuit Protect with Hiccup Mode
  • Stable with Low ESR Output Ceramic Capacitors

Typical applications

  • Low Voltage I/O System Power
  • Portable Instruments
  • Battery Powered Devices
  • Wireless Cards
  • 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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