VLM10555-2 Datasheet, PDF (3/4 Pages) TDK Electronics – Inductors for Power Supply Circuit Wound/STD • magnetic shielded

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Inductors for Power Supply Circuit
Wound/STD • Magnetic Shielded
Conformity to RoHS Directive
VLM Series VLM10555-3
FEATURES
• Low loss and large current capability design.
• High magnetic shield construction should actualize high resolu-
tion for EMC protection.
• Magnetic coupling type core with low magnetic flux leakage and
a three-terminal structure.
• Available for automatic mounting in tape and real package.
SHAPES AND DIMENSIONS
R45M
10.6±0.2
APPLICATIONS
Note book type and mobile computers, amusement equipment,
DVD players, VRMs, plasma displays, etc.
Dimensions in mm
RECOMMENDED PC BOARD PATTERN CIRCUIT DIAGRAM
1
3
2
2.7 3.9
11.5
Dimensions in mm
ELECTRICAL CHARACTERISTICS
Part No.
Inductance
(nH)
Inductance
tolerance
(%)
Test frequency
(kHz)
DC resistance
(mΩ )
max. typ.
Rated current(A)^∗
Based on inductance change
max.
[at 25°C]
[at 100°C]
Based on
temperature rise
typ.
VLM10555T-R33M180-3
330
±20
100
1.2
0.95
34
30
18
VLM10555T-R45M110-3
450
±20
100
2.6
2.2
40
34
11
VLM10555T-R56M120-3
560
±20
100
2.5
2.1
34
26
12
VLM10555T-R70M120-3
700
±20
100
2.5
2.1
26
21
12
VLM10555T-1R2M100-3
1200
±20
100
3.2
2.7
18
15
10
∗ _{Rated current: Value obtained when current flows and the temperature has risen to 40°C or when DC current flows and the nominal value of inductance}
has fallen by 30%, whichever is smaller.
• Operating temperature range: –40 to +125°C (Including self-temperature rise)
• Test equipment WK 3260B PRECISION MAGNETICS ANALYZER, WK 3265B 25A DC BIAS UNIT, or equivalent
TYPICAL ELECTRICAL CHARACTERISTICS
INDUCTANCE CHANGE vs. DC SUPERPOSITION
CHARACTERISTICS
1400
1200
1000
800
600
400
200
0
0
5
10 15 20 25 30 35 40
DC current(A)
330nH[at 25˚C]
450nH[at 25˚C]
560nH[at 25˚C]
700nH[at 25˚C]
1200nH[at 25˚C]
330nH[at 100˚C]
450nH[at 100˚C]
560nH[at 100˚C]
700nH[at 100˚C]
1200nH[at 100˚C]
TEMPERATURE RISE CHARACTERISTICS
60
55
330nH
450nH
50
560nH
45
700nH
1200nH
40
35
30
25
20
15
10
5
0
0 2 4 6 8 10 12 14 16 18 20
DC current(A)
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
• All specifications are subject to change without notice.
001-03 / 20110925 / e531_vlm