LPR4012-223BML [COILCRAFT]
Coupled Inductors; 耦合电感
| 型号： | LPR4012-223BML |
| 厂家： | 
Coilcraft lnc. |
| 描述： | Coupled Inductors |
| 文件： | 总2页 (文件大小：206K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Document 713-1
For DC-DC converters
and other applications
Coupled Inductors–LPR4012
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.
Primary (L1)
SRF
typ3
(MHz)
inductance2 Turns
DCR max (Ohms)
Isat(A)4
Irms(A)5
Partnumber1
± 20% (µH)
ratio
L1
L2
10% drop 20% drop 30% drop 20°C rise 40°C rise
LPR4012-202AML_
LPR4012-202BML_
LPR4012-202DML_
LPR4012-202LML_
LPR4012-103BML_
2.0
2.0
2.0
2.0
10.0
1 :1.5
1 :2
1 :3
1 :10
1 :2
0.240
0.240
0.240
0.240
0.600
0.255
0.400
1.15
9.64
1.55
61.5
49.4
31.0
7.43
19.5
1.71
1.71
1.71
1.71
0.62
1.73
1.73
1.73
1.73
0.64
1.74
1.74
1.74
1.74
0.65
1.10
1.10
1.10
1.10
0.52
1.45
1.45
1.45
1.45
0.70
LPR4012-103DML_
LPR4012-223BML_
LPR4012-223DML_
10.0
22.0
22.0
1 :3
1 :2
1 :3
0.600
1.16
1.16
3.71
3.65
7.08
12.8
11.2
8.00
0.62
0.43
0.43
0.64
0.45
0.45
0.65
0.46
0.46
0.52
0.43
0.43
0.70
0.57
0.57
1. Please specify termination and packaging codes:
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.
Specifications subject to change without notice.
Please check our website for latest information.
Document713-1 Revised10/05/09
© Coilcraft, Inc. 2009
Document 713-2
Coupled Inductors – LPR4012 Series
Core material Ferrite
Weight 54 – 64 mg
+
D
VOUT
C
AUX
Terminations RoHS compliant silver-palladium-platinum-glass frit.
L2
Other terminations available at additional cost.
–
+
Ambient temperature –40°C to +85°C with Irms current, +85°C to
+125°C with derated current
+
L1
Storage temperature Component: –40°C to +125°C.
Packaging: –40°C to +80°C
SW
V
VOUT
IN
C
D
Winding to winding isolation 100 V
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
–
–
Typical Buck Converter with auxiliary output
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Mean Time Between Failures (MTBF) 26,315,789 hours
Failures in Time (FIT) 38 per one billion hours
+
+
D
Packaging 1000/7″reel; 3500/13″ reel Plastic tape: 12 mm wide,
0.25 mm thick, 8 mm pocket spacing, 1.32 mm pocket depth
Recommended pick and place nozzle OD: 4 mm; ID: ≤ 2 mm
C
L1
VOUT
L2
V
IN
PCB washing Only pure water or alcohol recommended
C
–
PWM
–
Current Derating
Typical Flyback Converter
120
110
100
90
80
70
60
50
40
30
Dot indicates pin 1
1
2
4
1
2
4
3
0.155 ±0.003
3,94 ±0,076
L1
L2
XXXX
3
Dash
number
20
Isat
Irms
0.0433 ±0.004
1,10 ±0,10
10
0
Recommended
Land Pattern
0.155 ±0.003
3,94 ±0,076
-40 -20
0
20
40
60
80
100 120 140
Ambient temperature (°C)
1
4
45°
typ
0.031
0,78
0.103 0.049
2,606 1,24
0.174
4,40
3
2
0.049
1,24
0.060
1,52
0.103
2,606
0.174
4,40
inches
mm
Dimensions are in
Specifications subject to change without notice.
Please check our website for latest information.
Document713-2 Revised10/05/09
© Coilcraft, Inc. 2009
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