Murata Commercializes Ultra-Small Micro DC-DC Converters with Low EMI Noise

Murata Commercializes Ultra-Small Micro DC-DC Converters with Low EMI Noise

10/5/2010

Murata Manufacturing Co., Ltd.

President/ Statutory Representative Director: Tsuneo Murata

Overview

Murata Manufacturing Co., Ltd., has successfully commercialized the “micro DC-DC converters,” a series of ultra-small DC-DC converters with low EMI noise levels, which are targeted at mobile phones and other mobile devices.

Background

The increasing sophistication contained in the functions of mobile devices has made it necessary for the power to be supplied separately with each individual function circuit. With a view to tackling the market demand to (1) reduce the component mounting area, (2) take steps to counter EMI noise and (3) conserve energy, Murata has applied its unique circuit design technology and multilayer process technology to develop and commercialize ultra-small micro DC-DC converters with low EMI noise levels. DC-DC converters serve to convert DC voltages into other DC voltages. Murata plans to continue contributing to the optimization of the power supply peripheral circuit design of mobile devices.

Features

  • The inductor, a ferrite substrate containing the EMI filter function and a power IC have all been integrated to achieve a small size.
    (The new converters have an on-board footprint that is 60% less compared to when a discrete converter is mounted.)
  • The wiring connections have been reduced to the shortest possible lengths by integrating the power IC and inductor.
  • An EMI reduction function has been incorporated to suppress harmonic noise.
    (Radiation noise: 30 dB reduction)
  • A line-up of converters is available to flexibly accommodate output voltages in a range from 0.8V to 4.0V.
  • High-efficiency step-down synchronous rectification type, with PWM/PFM automatic switching control.

Applications

Mobile phones, digital still cameras, portable media players and all types of other compact mobile devices

Part Number

LXDC2HL Series

Electric Characteristics

Electric characteristics (Ta=25°C)

Operating input voltage Vin: 2.3V~5.5V
Output voltage Vout: 0.8V~4.0V (Fixed)
Output current Iout (Max) : 600mA
Switching frequency fosc: 3.0MHz

Ratings

Maximum applied voltage Vin: 6.3V
Operating temperature range Top: -40℃~85℃
Storage temperature range Tstd: -40℃~85℃

External Size

Top View

Top View

Side View

Side View
Code Dimension
L 2.5 ± 0.2mm
W 2.0 ± 0.2mm
T 1.1mm (Max)

Production

Production begins in October 2010


About Murata

Murata Manufacturing Co., Ltd. is a worldwide leader in the design, manufacture and sale of ceramic-based passive electronic components & solutions, communication modules and power supply modules. Murata is committed to the development of advanced electronic materials and leading edge, multi-functional, high-density modules. The company has employees and manufacturing facilities throughout the world. For more information, visit Murata's website at www.murata.com