750311439 Wurth Electronics Inc, 750311439 Datasheet - Page 11

• Manufacturer Part Number: 750311439
• Description: TRANS FLYBACK LT3748LT3575 37UH
• Manufacturer: Wurth Electronics Inc
• Series: WE-FBr
• Type: For DC/DC Convertersr

Specifications of 750311439

• Applications: Flyback Converters
• Intended Chipset: LT3573, LT3574, LT3575, LT3748
• Voltage - Primary: 37 ~ 57V
• Voltage - Auxillary: 12V @ 30mA
• Voltage - Isolation: 1500Vrms
• Frequency: 250kHz
• Operating Temperature: -40°C ~ 130°C
• Mounting Type: Surface Mount
• Footprint: 0.70" x 0.53" (17.8mm x 13.5mm)
• Height Above Board: 0.50" (12.7mm)
• Chipset Manufacturer: Linear Technology
• Inductance: 37µH
• Transformer Type: Isolation and Data Interface (Encapsulated)
• Turns Ratio - Primary:secondary: 2 : 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• E.t.: -
• Other names: 732-2644-2

WE-TPC
SMD Shielded Tiny Power Inductor
Size 2828
11/10
Electrical properties
Order Code
744 025 000 47
744 025 000 72
744 025 001
744 025 002
744 025 003
744 025 004
744 025 006
744 025 100
744 025 150
744 025 220
I
I
Inductance vs. Current
R
sat
referring to 40 K self-heating above ambient temperature
referring to inductance loss of 35% typ.
package size!
0.04
0.2
25
25
Small
5
5
1
1
0.0
0.5
Inductance
(µH)
0.47
0.72
1.20
2.20
3.30
4.70
6.80
10.0
15.0
22.0
1.0
1.5
Tolerance
±25
±25
±20
±20
±20
±20
±20
±20
±20
±20
(%)
2.0
2.5
Strom/current (A)
DCR typ.
(mΩ)
3.0
saturation current!
19.0
23.5
36.0
57.0
85.0
100
142
170
356
525
Extremely high
3.5
7 7
7 7
7 7
7 7
7 7
Characteristics
Flat power inductor 2.8 x 2.8 x 2.8 mm
High current capability up to 4.7 A
Magnetically shielded which results in a low leakage
field
Recommended solder profile: Reflow
Operating temperature: –40 °C to +125 °C
DCR max.
4.0
(mΩ)
23.0
27.5
42.0
66.0
101
120
165
190
400
575
4.5
5.0
3.30
3.00
2.60
1.80
1.50
1.35
1.10
1.00
0.72
0.50
(A)
I
R
5.5
6.0
4.70
4.00
3.00
2.40
1.80
1.70
1.30
1.10
0.90
0.75
(A)
I
sat
744 025 000 47
744 025 000 72
744 025 001
744 025 002
744 025 003
744 025 004
744 025 006
744 025 100
744 025 150
744 025 220
Qty.
550
7 7
7 7
7 7
7 7
Dimensions (in mm)
Land pattern (in mm)
Applications
Portable power like PDA, digital camera, PCMCIA
cards and displays
DC/DC converter
Embedded PC
Mobile data gathering, telemetric
2,85 ±0,25
0,975 typ.
0,90 typ.
1,0
0,975 typ.
1,2
www.we-online.com
1,0
11