750311486 Wurth Electronics Inc, 750311486 Datasheet - Page 14

• Manufacturer Part Number: 750311486
• Description: TRANS FLYBACK LT3748 100UH SMD
• Manufacturer: Wurth Electronics Inc
• Series: WE-FBr
• Type: For DC/DC Convertersr

Specifications of 750311486

• Applications: Flyback Converters
• Intended Chipset: LT3573, LT3574, LT3575, LT3748
• Voltage - Primary: 12V
• Voltage - Auxillary: 4V @ 20mA
• Voltage - Isolation: 1500Vrms
• Frequency: 50kHz
• 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: 100µH
• Transformer Type: Isolation and Data Interface (Encapsulated)
• Turns Ratio - Primary:secondary: 1 : 10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• E.t.: -
• Other names: 732-2622-2

14
WE-PD2 HV
High Voltage SMD Power Inductor
Size 7850 / Size 1054
Electrical properties: Size 7850
Order Code
768 775 30
768 775 312
768 775 322
I
I
Electrical properties: Size 1054
Order Code
768 776 30
768 776 312
768 776 322
I
I
Note
With effect 7th January 2010 the so-called standby regulation came into force within the European Union. Reducing the power consumption until 2020 by 75% in the standby mode is the aim of this
regulation. Due to that regulation electrical home appliance, communication and office equipment aren’t allowed to spend more than 2 Watt in the standby mode. For devices which are simply
reactivated only 1 Watt is allowed. From 2014 on the values will reduce further on.
For those standby applications SMPS are needed that are compact and efficient but don’t exceed the requested consumption either. The high voltage version of the power inductors WE-PD2 is
especially designed for such applications. A special layout combined with a complex test setup guarantees the requested withstand voltage of the rectified supply voltage of 400 V
R
sat
R
sat
www.we-online.com
referring to 40 K self-heating above ambient temperature
referring to 40 K self-heating above ambient temperature
referring to inductance loss of 10% typ.
referring to inductance loss of 10% typ.
Inductance
Inductance
1000
1200
2200
1000
1200
2200
(µH)
(µH)
Inductors for non-isolated SMPS
DCR typ.
DCR typ.
(400 V
2.78
3.77
6.00
2.20
2.48
4.40
(Ω)
(Ω)
DC
)
DCR max.
DCR max.
7 7
7 7
7 7
7 7
Land pattern (in mm)
Land pattern (in mm)
(Ω)
(Ω)
3.3
4.5
7.2
2.6
3.0
5.3
Characteristics
Unshielded construction
Designed for 400 V
Recommended solder profile: Reflow
Operating temperature: –40 °C to +125 °C
0.30
0.28
0.15
0.38
0.35
0.18
(A)
(A)
I
I
R
R
DC
9,5 ref.
7,5 ref.
0.30
0.28
0.20
0.38
0.35
0.26
(A)
(A)
I
I
sat
sat
Qty.
500
Qty.
500
7 7
7 7
7 7
7 7
Dimensions (in mm)
Dimensions (in mm)
Applications
Non-isolated buck or buck-boost converter like
Power Integrations LinkSwitch-TN
Constant current LED driver
Utility metering
Filter for power supply
10,0 ±0,4
7,8 ±0,3
3 ref.
3,5 ref.
DC
.
11/10