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IC manufacturers Monolithic Power Systems

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reference designMP38115

Monolithic Power Systems MP38115

Ultra Low Voltage, 4A, 5.5V Synchronous Step-Down Switching Regulator

Overview

TopologyBuck Converter
Input voltage1.1-5.5 V
Switching frequency1200-1800 kHz
Output 11.5 V
Output 24.95 V / 4 A
Output 31.8 V
Output 41.2 V
Output 52.5 V
Output 63.3 V
IC revision0.92

Description

The MP38115 is an internally compensated 1.5MHz fixed frequency PWM synchronous step-down regulator. MP38115 operates from a 1.1V to 5.5V input and generates an output voltage as low as 0.8V.The MP38115 integrates a 60mΩ high-side switch and a 60mΩ synchronous rectifier for high efficiency without an external Schottky diode. With peak current mode control and internal compensation, the MP38115 basedsolution delivers a very compact footprint with a minimum component count.The MP38115 is available in a small 3mm x 3mm 10-lead QFN package.

Features

  • 4A Output Current
  • Input Operation Range: 1.1V to 5.5V
  • 60mΩ Internal Power MOSFET Switches
  • All Ceramic Capacitor Design
  • Up to 95% Efficiency
  • 1.5MHz Fixed Switching Frequency
  • Adjustable Output from 0.8V to 0.9xVIN
  • Internal Soft-Start
  • Frequency Synchronization Input
  • Power Good Output
  • Cycle-by-Cycle Current Limiting
  • Hiccup Short Circuit Protection
  • Thermal Shutdown
  • 3mm x 3mm 10-lead QFN Package

Typical applications

  • Network Equipment
  • Printers
  • µP/ASIC/DSP/FPGA Core and I/O Supplies
  • Telecom Equipment
  • Point of Load Regulators
  • LCD TVs

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744310055
SPECWE-HCI SMT Flat Wire High Current Inductor, 0.52 µH, 19.2 A
Simu­lation
Availability
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Downloads9 files

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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
Inductance0.52 µH
Performance Rated Current19.2 A
Saturation Current @ 10%8.5 A
Saturation Current @ 30%20 A
DC Resistance3.7 mΩ
Self Resonant Frequency140 MHz
MaterialSuperflux 
Packaging Unit1500 
–Check availability
744310095
SPECWE-HCI SMT Flat Wire High Current Inductor, 0.95 µH, 14.4 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-HCI SMT Flat Wire High Current Inductor
Inductance0.95 µH
Performance Rated Current14.4 A
Saturation Current @ 10%5 A
Saturation Current @ 30%13 A
DC Resistance6.2 mΩ
Self Resonant Frequency90 MHz
MaterialSuperflux 
Packaging Unit1500 
–Check availability