LDS0705-4R7M-R COOPER | Alldatasheet
Document overview
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Technical content
Description
- 125°C maximum temperature operation
- 7.8mm x 7.0mm x 5.0mm shielded drum core
- Ferrite core material
- Metalized core mounting utilizes board space
- Inductance range from 0.82µH to 470µH
- Current range from 8.57 Amps to 0.368 Amps
- Frequency range up to 1MHz
Applications
- Buck or Boost Inductor
- Noise filtering and output filter chokes
- Battery Power, DC-DC converters
- Notebook power, PDA’s, Hand held computers
- DVD players
- Cellular phones Environmental Data
- Storage temperature range: -40°C to +125°C
- Operating temperature range: -40°C to +125°C (range is application specific)
- Solder reflow temperature: +260°C max. for 10 seconds maximum Packaging
- Supplied in tape and reel packaging, 1000 per reel LDS0705 Series Shielded Power Inductors Part Number Rated OCL (1) Irms(2) Isat (3) DCR ( Ω) K-factor Inductance µH Amperes Amperes @20°C (4) (µH) (Typical) (1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc. (2) Irms: DC current for an approximate ∆T of 30°C without core loss. Derating is necessary for AC currents. PCB layout, trace thickness and width, air-flow, and proximity of other heat generating components will affect the temperature rise. It is recommended that the temperature of the part not exceed 125°C under worst case operating conditions verified in the end application. (3) Isat Amperes peak for approximately 15% rolloff (@25°C) (4) K-factor: Used to determine B p-p for core loss (see graph). B p-p = K*L*∆I, B p-p(mT), K: (K factor from table), L: (Inductance in µH), ∆I (Peak to peak ripple current in Amps). (5) Part Number Definition: LDS0705-xxx-R LDS0705 = Product code and size; -xxx = Inductance value in uH; R = decimal point; If no R is present, third character = # of zeros. M = Inductance tolerance +/- 20% -R suffix = RoHS compliant RoHS 2002/95/EC
Temperature Rise vs. Watt Loss Total Loss (W) Temp. Rise (° C) Parts packaged on 13" Diameter reel, 1,000 parts per reel. Packaging Information Dimensions are in millimeters. xxx = Inductance in uH. R = decimal point. If no R is present third character = # of zeros. wwllyy = Date code, R = Revision level. RECOMMENDED PCB LAYOUT SCHEMATIC TOP VIEW XXX wwllyy R SIDE VIEWBOTTOM VIEW 7.0±0.2 7.8±0.2 5.0 Max. 7.0 3.0 2.0 2.0 Typ. Mechanical Diagrams
OCL vs. Isat 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 110% 120% 0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200% % of Isat % of OCL -40 Inductance Characteristics LDS0705 Series Shielded Power Inductors Core Loss 1MHz 500kHz 300kHz 200kHz 100kHz 50kHz 0.0001 0.001 0.01 0.1 100 1 10 100 1000 Bp-p (mT) Core Loss (W) Visit us on the Web at www.cooperbussmann.com 1225 Broken Sound Pkwy. Suite F Boca Raton, FL 33487 Tel: +1-561-998-4100 Toll Free: +1-888-414-2645 Fax: +1-561-241-6640 This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Electronic Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Electronic Technologies also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Life Support Policy: Cooper Electronic Technologies does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. PM-4142 3/07 © Cooper Electronic Technologies 2007