LPR4012-202AML Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Coupled Inductors

Document 713-1
Coupled Inductors–LPR4012 ForDC-DCconverters
and other applications
The LPR4012 miniature shielded coupled inductors are
only 1,1 mm high and 4 mm square. The excellent
coupling coefficient (k = 0.95) makes them ideal for use
as flyback transformers in DC-DC converters or as
coupled inductors in buck regulators to provide multiple
outputs. The wide selection of turns ratios makes them
suitable for a variety of voltage step-up and step-down
applications. They can also be used in autotransformer
applications.
The high Isat and low DCR ratings of these low profile
parts provide high efficiency and excellent current han-
dling in a rugged, low cost design.
Custom inductance values and turn ratios are available
upon request.
Part number¹
Primary (L1)
inductance²
± 20% (µH)
LPR4012-202AML_
2.0
LPR4012-202BML_
2.0
LPR4012-202DML_
2.0
LPR4012-202LML_
2.0
LPR4012-103BML_
10.0
LPR4012-103DML_
10.0
LPR4012-223BML_
22.0
LPR4012-223DML_
22.0
Turns
ratio
1 : 1.5
1:2
1:3
1 : 10
1:2
1:3
1:2
1:3
DCR max (Ohms)
L1
L2
0.240
0.240
0.240
0.240
0.600
0.255
0.400
1.15
9.64
1.55
0.600 3.71
1.16
3.65
1.16
7.08
1. Please specify termination and packaging codes:
SRF
typ³
(MHz)
61.5
49.4
31.0
7.43
19.5
12.8
11.2
8.00
Isat (A)⁴
10% drop 20% drop 30% drop
1.71
1.73
1.74
1.71
1.73
1.74
1.71
1.73
1.74
1.71
1.73
1.74
0.62
0.64
0.65
0.62
0.64
0.65
0.43
0.45
0.46
0.43
0.45
0.46
Irms (A)⁵
20°C rise 40°C rise
1.10
1.45
1.10
1.45
1.10
1.45
1.10
1.45
0.52
0.70
0.52
0.70
0.43
0.57
0.43
0.57
LPR4012-223XMLC
Termination: L = RoHS compliant Silver-palladium-platinum-glass frit.
Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or
S = 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 is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent.
3. SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
4. DC current applied to L1, at which the inductance drops the specified amount from its value without current.
5. Current applied to L1 that causes the specified temperature rise from 25°C ambient.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Document 713-1 Revised 10/05/09