750311688 Wurth Electronics Inc, 750311688 Datasheet - Page 18

• Manufacturer Part Number: 750311688
• Description: TRANS FLYBACK LT3748LT3575 50UH
• Manufacturer: Wurth Electronics Inc
• Series: WE-FBr
• Type: For DC/DC Convertersr

Specifications of 750311688

• Applications: Flyback Converters
• Intended Chipset: LT3573, LT3574, LT3575, LT3748
• Voltage - Primary: 36V
• Voltage - Auxillary: 10V @ 20mA
• Voltage - Isolation: 1500Vrms
• Frequency: 100kHz
• Operating Temperature: -40°C ~ 125°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: 50µH
• Transformer Type: Isolation and Data Interface (Encapsulated)
• Turns Ratio - Primary:secondary: 5 : 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• E.t.: -
• Other names: 732-2646-2

18
Multiphase switching
WE-HCM
SMD High Current Flat Wire Inductor
Size 1190 / Size 1390
Electrical properties: Size 1190
Order Code
744 301 025
744 301 033
744 301 047
I
I
Electrical properties: Size 1390
Order Code
744 309 025
744 309 033
744 309 047
I
I
R
sat
R
sat
www.we-online.com
referring to 50 K self-heating above ambient temperature
referring to 50 K self-heating above ambient temperature
referring to inductance loss of 20%
referring to inductance loss of 20%
regulator
Tight DCR for current
sense applications
L
L
o
o
(nH)
(nH)
250
330
470
250
330
470
±20%
±20%
DCR ±7%
DCR ±7%
0.165
(mΩ)
(mΩ)
0.32
I
I
R
R
(A)
(A)
40
50
typ.
typ.
7 7
7 7
7 7
7 7
7 7
Land pattern (in mm)
Land pattern (in mm)
Characteristics
Low core losses (MnZn)
High saturation current up to 81 A
DCR tolerance ±7%
Recommended solder profile: Reflow
Operating temperature: –40 °C to +125 °C
I
I
sat
sat
81.0
62.5
40.5
(A)
(A)
65
46
35
typ.
typ.
Core Material
Core Material
12,1
4,2
10
15
MnZn
MnZn
Qty.
300
Qty.
300
7 7
7 7
7 7
7 7
Dimensions (in mm)
Dimensions (in mm)
Applications
Multiphase switching regulator
CPU/Ram power supply
Power PC
Input/output filter
3,2 ±0,5
11,3 ±0,5
10,5 ±0,5
12,5 ±0,5
14,0 ±0,5
1,8 ±0,3
11/10