Document 661-1
Shielded Coupled Inductors LPD3015
Halogen
Free
• Only 1.4 mm high and 3 mm square
• Ideal for use in flyback, multi-output buck, SEPIC and Zeta
applications.
• High inductance, high efficiency and excellent current
handling
• Can also be used as two single inductors connected in
series or parallel or as a common mode choke.
AEC
Q200 +85°C
+
+
D
L1
C
L2
VOUT
C
VIN
–
SW
–
Typical Flyback Converter
D
L2
+
VOUT
C
AUX
–
+
+
VIN
1
L1
4
D
SW
VOUT
C
–
–
Typical Buck Converter with auxiliary output
L2
2
L1
3
D
+
L1
VIN
C
L2
Q
–
+
C1
C
–
Typical SEPIC schematic
+
+
–
Dimensions are in
L2
C1
Q
VIN
VOUT
L1
C
D
Typical Zeta schematic
C
VOUT
–
inches
mm
Specificationssales@coilcraft.com
subject to change without notice.
US +1-847-639-6400
Please check our
website for latest information.
UK +44-1236-730595
sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
Document 661-1 Revised 12/22/21
©
© Coilcraft
Coilcraft Inc.
Inc. 2021
2021
This
This product
product may
may not
not be
be used
used in
in medical
medical or
or high
high
risk
applications
without
prior
Coilcraft
approval.
risk applications without prior Coilcraft approval.
Specification
Specification subject
subject to
to change
change without
without notice.
notice.
Please
Please check
check web
web site
site for
for latest
latest information.
information.
Document 661-2
Coupled Inductors for SEPIC - LPD3015 Series
Isat (A)6 Irms (A)
Coupling Leakage
2
3
4
5
Inductance DCR max SRF typ coefficient
L typ
10%
20%
30%
both
one
Part number1
windings7 winding8
±20% (µH) (Ohms)
(MHz)
typ
(µH)
drop
drop drop
Halogen
Free
AEC
Q200 +85°C
LPD3015-391MR_
LPD3015-561MR_
LPD3015-102MR_
LPD3015-152MR_
LPD3015-182MR_
0.39 0.071 289
0.56 0.079 235
1.0 0.129 160
1.5 0.204 140
1.8 0.273 135
0.89
0.93
0.95
0.96
0.96
0.08 3.2 3.3 3.4
0.08 2.7 2.8 2.8
0.09 2.0 2.1 2.2
0.11 1.6 1.7 1.8
0.13 1.5 1.6 1.6
1.45 2.05
1.37 1.94
1.08 1.52
0.86 1.20
0.78 1.10
LPD3015-222MR_ 2.2 0.300 110
LPD3015-332MR_ 3.3 0.337 90
LPD3015-472MR_ 4.7 0.503
79
LPD3015-682MR_ 6.8 0.622
58
LPD3015-103MR_ 10 1.040
48
0.97 0.14 1.5 1.6 1.6
0.75 1.05
0.98 0.16 1.0 1.1 1.2
0.67 0.94
0.98 0.18
0.86
0.87
0.88 0.54
0.76
0.98 0.22
0.77
0.78
0.79 0.49
0.69
0.99 0.28
0.58
0.59
0.60 0.38
0.53
LPD3015-153MR_ 15
LPD3015-183MR_ 18
LPD3015-223MR_ 22
LPD3015-333MR_ 33
LPD3015-473MR_ 47
0.99 0.37
0.49
0.50
0.51 0.32
0.46
0.99 0.42
0.46
0.47
0.48 0.31
0.44
0.99 0.48
0.42
0.43
0.44 0.28
0.40
0.99 0.63
0.34
0.35
0.36 0.23
0.32
0.99 0.81
0.28
0.29
0.30 0.19
0.27
1.420
35
1.550
33
1.89 30
2.84 23
4.03 17
LPD3015-683MR_ 68 6.11 14 0.99 1.13
0.24
0.25
0.26 0.16
0.22
LPD3015-104MR_
100 8.54 11 0.99 1.50
0.20
0.21
0.22 0.13
0.19
LPD3015-124MR_
120 9.23 9.0 0.99 1.76
0.19
0.20
0.20 0.13
0.18
LPD3015-154MR_
150 12.40 8.0 0.99 2.22
0.16
0.17
0.18 0.11
0.16
LPD3015-184MR_
180 15.32 7.5 0.99 2.79
0.15
0.16
0.17 0.10
0.14
LPD3015-224MR_
220 18.56 6.0 0.99 3.56
0.13
0.14
0.15 0.09
0.13
LPD3015-334MR_
330 27.70 5.0 0.99 5.18
0.11
0.12
0.12 0.07
0.10
1. When ordering, please specify termination and packaging codes:
Coupled Inductor Core and Winding Loss Calculator
LPD3015-334MRC
Termination: R = Matte tin over nickel over silver
Special order, added cost: Q = RoHS tin-silver-copper (95.5/4/0.5) or P = non-RoHS tin-lead (63/37)
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (1000 parts per full reel). Quantities less than
full reel available: in tape (not machine ready) or
with leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part
numbering system, Coilcraft is eliminating the need
for multiple packaging codes. When ordering, simply change the last letter of your part number from
B to C.
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (3500 parts
per full reel).
2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms,
0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads
are connected in parallel, inductance is the same value. When leads
are connected in series, inductance is four times the value.
3. DCR is for each winding. When leads are connected in parallel, DCR
is half the value. When leads are connected in series, DCR is twice the
value.
4. SRF measured using an Agilent/HP 4191A or equivalent. When leads
are connected in parallel, SRF is the same value.
5. Leakage Inductance is for L1 and is measured with L2 shorted
6. DC current at 25°C that causes the specified inductance drop from its
value without current. It is the sum of the current flowing in both windings.
7. Equal current when applied to each winding simultaneously that
causes a 40°C temperature rise from 25°C ambient. This information is
for reference only and does not represent absolute maximum ratings.
8. Maximum current when applied to one winding that causes a 40°C
temperature rise from 25°C ambient. This information is for reference
only and does not represent absolute maximum ratings.
9. Electrical specifications at 25°C.
Refer to Doc 639 “Selecting Coupled Inductors for SEPIC Applications.”
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
This web-based utility allows you to enter frequency, peak-to-peak
(ripple) current, and Irms current to predict temperature rise and
overall losses, including core loss. Go to online calculator.
Core material Ferrite
Core and winding loss Go to online calculator
Weight 45 – 52 mg
Terminations RoHS compliant matte tin over nickel over silver.
Other terminations available at additional cost.
Ambient temperature –40°C to +85°C with (40°C rise) Irms current.
Maximum part temperature +125°C (ambient + temp rise).
Storage temperature Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Winding to winding isolation 100 Vrms, one minute
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at
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