750311385 Wurth Electronics Inc, 750311385 Datasheet - Page 17
![TRANS FLYBACK LT3748 15UH SMD](/photos/15/55/155522/750311385_sml.jpg)
750311385
Manufacturer Part Number
750311385
Description
TRANS FLYBACK LT3748 15UH SMD
Manufacturer
Wurth Electronics Inc
Series
WE-FBr
Type
For DC/DC Convertersr
Specifications of 750311385
Applications
Flyback Converters
Intended Chipset
LT3573, LT3574, LT3575, LT3748
Voltage - Primary
18 ~ 60V
Voltage - Auxillary
14V @ 50mA
Voltage - Isolation
1500Vrms
Frequency
210kHz
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Footprint
1.15" x 0.91" (29.1mm x 23.1mm)
Height Above Board
0.45" (11.4mm)
Chipset Manufacturer
Linear Technology
Inductance
15µH
Transformer Type
Isolation and Data Interface (Encapsulated)
Turns Ratio - Primary:secondary
1.25 : 1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
E.t.
-
Other names
732-2648-2
WE-HCF
SMD High Current Inductor
Size 2013
11/10
Electrical properties
Order Code
744 363 150 0
744 363 220 0
744 363 330 0
744 363 470 0
I
I
Schematic
Inductance vs. Current
R
sat
referring to 50 K self-heating above ambient temperature
referring to inductance loss of 30%
50
45
40
35
30
25
20
15
10
5
0
0
L
0
(µH)
±15%
15
22
33
47
14.70
21.10
19.40
12.45
(µH)
L
Extended inductance
N
Strom/current (A)
1
DCR ±10%
values
(mΩ)
10.65
11.40
12.20
8.70
7 7
7 7
7 7
Land pattern (in mm)
Characteristics
Very low core losses (MnZn)
Recommended solder profile: Reflow
Operating temperature: –40 °C to +125 °C
(A)
14
12
12
12
I
R
10
21.0
15.0
11.0
8.5
(A)
I
sat
Core Material
MnZn
744 363 150 0
744 363 220 0
744 363 330 0
744 363 470 0
Qty.
100
7 7
7 7
7 7
7 7
Dimensions (in mm)
1
Applications
Storage inductor for high efficiency DC/DC
converters
Single and polyphase buck converters
Filter for audio applications
Optimized for high current boost applications
21,8 max.
3
9,0 ±0,5
2,5 ±0,2
2
2,5 ±0,2
2,0 ref.
Pad 3 only for mechanical
reasons – no center top function
www.we-online.com
3,0 ±0,5
17