750311783 Wurth Electronics Inc, 750311783 Datasheet - Page 20

• Manufacturer Part Number: 750311783
• Description: TRANS FLYBACK LT3748 20UH SMD
• Manufacturer: Wurth Electronics Inc
• Series: WE-FBr
• Type: For DC/DC Convertersr

Specifications of 750311783

• Applications: Flyback Converters
• Intended Chipset: LT3573, LT3574, LT3575, LT3748
• Voltage - Primary: 19 ~ 70V
• Voltage - Auxillary: 12V @ 10mA
• Voltage - Isolation: 1500Vrms
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Footprint: 1.27" x 1.06" (32.3mm x 27.0mm)
• Height Above Board: 0.54" (13.7mm)
• Chipset Manufacturer: Linear Technology
• Inductance: 20µH
• Transformer Type: Isolation and Data Interface (Encapsulated)
• Turns Ratio - Primary:secondary: 1.5 : 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• E.t.: -
• Other names: 732-2669-2

20
WE-FB
Flyback Transformer
LT3573 / LT3574 / LT3575 / LT3748
Assembled demo boards with option to change included transformer
Order Code**
750 105
750 103
750 106
750 107
750 108
** all datasheets are available on www.we-online.com
*** different set-ups possible with additional transformers which are included in the design kits
www.we-online.com
LT IC
LT3574
LT3573
LT3575
LT3748
LT3748
Demoboard
DC1636A
DC1228A
DC1643A
DC1557A
DC1694A
Power (W)
More design support notes to
2.5
12
30
10
www.we-online.com/LT
7
7 7
7 7
7 7
* not AECQ 200 tested & approved
Characteristics
Standard transformers for various output voltages/
currents available
Easy design of custom power supply due to standard
circuit and change of transformers and two
components for feedback loop
Isolation voltage up to 2.5 kV
download on
Order Code
750 370 041
750 370 047
750 311 675
750 311 439
750 311 607
Transformer assembled on board
Ouput Voltage
5 V / 0.35 A
12 V / 2.5 A
5 V / 1.4 A
12 V / 1 A
5 V / 1 A
Order Code
750 311 304
750 310 564
750 310 688
750 311 599
–
Transformer 2***
7 7
7 7
7 7
7 7
7 7
Applications
Isolated power design
Sensor interfaces
Isolated telecom converters
High power “Automotive”* supplies
Power over Ethernet
Ouput Voltage
3.3 V / 0.7 A
12 V / 0.5 A
3.3 V / 4 A
15 V / 2 A
–
Order Code
750 310 799
750 310 559
750 311 689
750 311 608
–
Transformer 3***
Ouput Voltage
12 V / 0.15 A
3.3 V / 1.5 A
24 V / 1.3 A
5 V / 3 A
–
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