Document 661-1
Shielded Coupled Inductors
LPD3015
• 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.
+
D
+
L1
V
IN
C
SW
L2
C
V
OUT
–
–
Typical Flyback Converter
+
C
V
OUT
AUX
L2
+
Dot indicates pin 1
1
4
D
–
+
SW
D
V
IN
L1
C
V
OUT
1
0.118 ±0.003
*
3,00 ±0,076
L1
2
L2
4
–
–
Typical Buck Converter with auxiliary output
3
2
XXX X
Dash
number
Internal
code
3
+
L1
V
IN
D
C1
Q
+
C
V
OUT
0.118 ±0.003
*
3,00 ±0,076
0.055 ±0.004
*
1,4 ±0,1
1
4
C
L2
–
Typical SEPIC schematic
–
0.094 0.040
2,38 1,02
0.022
0,54
45°
typ
0.130
3,30
+
Q
V
IN
+
C1
L2
D
C
V
OUT
C
L1
0.039
0,99
2
3
–
*
Dimensions are of the case not including
the termination. For maximum overall
dimensions including the termination, add
0.005 in / 0.13 mm.
For optional tin-lead and tin-silver-copper
terminations, dimensions are for the
mounted part. Dimensions before mounting
can be an additional 0.005 in / 0.13 mm.
0.040
1,02
0.094
2,38
0.130
3,30
Typical Zeta schematic
–
Dimensions are in
inches
mm
Specifications subject to change
US
+1-847-639-6400 sales@coilcraft.com
without notice.
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 01/24/18
© Coilcraft Inc. 2018
© Coilcraft Inc. 2018
This product may not be used in medical or high
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Specification subject to change without notice.
Please check web site for latest information.
Please check web site for latest information.
Document 661-2
Coupled Inductors for SEPIC - LPD3015 Series
Part number
1
LPD3015-391MR_
LPD3015-561MR_
LPD3015-102MR_
LPD3015-152MR_
LPD3015-182MR_
LPD3015-222MR_
LPD3015-332MR_
LPD3015-472MR_
LPD3015-682MR_
LPD3015-103MR_
LPD3015-153MR_
LPD3015-183MR_
LPD3015-223MR_
LPD3015-333MR_
LPD3015-473MR_
LPD3015-683MR_
LPD3015-104MR_
LPD3015-124MR_
LPD3015-154MR_
LPD3015-184MR_
LPD3015-224MR_
LPD3015-334MR_
Inductance
2
±20% (µH)
0.39
0.56
1.0
1.5
1.8
2.2
3.3
4.7
6.8
10
15
18
22
33
47
68
100
120
150
180
220
330
DCR
(Ohms)
0.071
0.079
0.129
0.204
0.273
0.300
0.337
0.503
0.622
1.040
1.420
1.550
1.89
2.84
4.03
6.11
8.54
9.23
12.40
15.32
18.56
27.70
max
3
SRF
(MHz)
289
235
160
140
135
110
90
79
58
48
35
33
30
23
17
14
11
9.0
8.0
7.5
6.0
5.0
typ
4
Coupling Leakage
coefficient
L typ
5
typ
(µH)
0.89
0.93
0.95
0.96
0.96
0.97
0.98
0.98
0.98
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.08
0.08
0.09
0.11
0.13
0.14
0.16
0.18
0.22
0.28
0.37
0.42
0.48
0.63
0.81
1.13
1.50
1.76
2.22
2.79
3.56
5.18
10%
drop
3.2
2.7
2.0
1.6
1.5
1.5
1.0
0.86
0.77
0.58
0.49
0.46
0.42
0.34
0.28
0.24
0.20
0.19
0.16
0.15
0.13
0.11
Isat
(A)
6
20%
30%
drop
drop
3.3
2.8
2.1
1.7
1.6
1.6
1.1
0.87
0.78
0.59
0.50
0.47
0.43
0.35
0.29
0.25
0.21
0.20
0.17
0.16
0.14
0.12
3.4
2.8
2.2
1.8
1.6
1.6
1.2
0.88
0.79
0.60
0.51
0.48
0.44
0.36
0.30
0.26
0.22
0.20
0.18
0.17
0.15
0.12
Irms
(A)
both
one
windings
7
winding
8
1.45
1.37
1.08
0.86
0.78
0.75
0.67
0.54
0.49
0.38
0.32
0.31
0.28
0.23
0.19
0.16
0.13
0.13
0.11
0.10
0.09
0.07
2.05
1.94
1.52
1.20
1.10
1.05
0.94
0.76
0.69
0.53
0.46
0.44
0.40
0.32
0.27
0.22
0.19
0.18
0.16
0.14
0.13
0.10
1. When ordering, please specify
termination
and
packaging
codes:
LPD3015-334MRC
Termination: R
= Matte tin over nickel over silver
Special order, added cost:
Q
= RoHS tin-silver-cop-
per (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).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge),
use code letter D instead.
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.
Coupled Inductor Core and Winding Loss Calculator
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 <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
1000/7″ reel; 3500/13″ reel Plastic tape: 12 mm wide,
0.26 mm thick, 8 mm pocket spacing, 1.65 mm pocket depth
Recommended pick and place nozzle
OD: 3 mm; ID:
≤
1.5 mm
PCB washing
Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See
Doc787_PCB_Washing.pdf.
Specifications subject to change without notice.
US
+1-847-639-6400 sales@coilcraft.com
Please check
sales@coilcraft-europe.com
UK
+44-1236-730595
our website for latest information.
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 661-2
Revised 01/24/18
© Coilcraft Inc. 2018
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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