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IC manufacturers Monolithic Power Systems

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reference designMP2159

Monolithic Power Systems MP2159

1A, 6V, 1.5MHz, 17μA IQ, COT Synchronous Step Down Switcher In 8-pin TSOT23

Overview

TopologyBuck Converter
Input voltage2.5-6 V
Output 11.2 V / 1 A
IC revision1.03

Description

The MP2159 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 MP2159 is available in the small TSOT23-8 package and requires a minimum number of readily available standard external components.

The MP2159 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
  • Wide 2.5V to 6V Operating Input Range
  • Output Adjustable from 0.6V
  • Up to 1A Output Current
  • 100% Duty Cycle in Dropout
  • 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
  • Available in a TSOT23-8 Package

Typical applications

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

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
IR(A)
ISAT,10%(A)
ISAT,30%(A)
SamplesAvailability & Sample
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744777001
SPECWE-PD SMT Power Inductor, 1 µH, 8.6 A
Simu­lation
Availability
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Downloads9 files

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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 
Rated Current6.84 A
Saturation Current @ 10%8.3 A
Saturation Current @ 30%10.2 A
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7447730
SPECWE-PD2 SMT Power Inductor, 1 µH, 5.55 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-PD2 SMT Power Inductor
Inductance1 µH
Performance Rated Current5.55 A
Saturation Current5.72 A
DC Resistance49 mΩ
Self Resonant Frequency110 MHz
Size4532 
–
Rated Current4 A
Saturation Current @ 10%5.72 A
Saturation Current @ 30%6.6 A
–Check availability