Datasheet

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LT3511

3511fc

APPLICATIONS INFORMATION

TRANSFORMER DESIGN CONSIDERATIONS

Successful application of the LT3511 relies on proper

transformer specification and design. Carefully consider

the following information in addition to the traditional

guidelines associated with high frequency isolated power

supply transformer design.

Linear Technology has worked with several leading mag-

netic component manufacturers to produce pre-designed

flyback transformers for use with the LT3511. Table 1

shows the details of these transformers.

Table 1. Predesigned Transformers

TRANSFORMER

PART NUMBER L

PRI

(μH) LEAKAGE (μH) N

ISOLATION (V)

SATURATION

CURRENT (mA) VENDOR

TARGET

APPLICATIONS

750311558 300 1.5 4:1:1 1500 500 Würth Elektronik 48V to 5V, 0.3A

24V to 5V, 0.2A

12V to 5V, 0.13A

48V to 3.3V, 0.33A

24V to 3.3V, 0.28A

12V to 3.3V, 0.18A

750311019 400 5 6:1:2 1500 750 Würth Elektronik 24V to 5V, 0.26A

12V to 5V, 0.17A

48V to 3.3V, 0.43A

24V to 3.3V, 0.35A

12V to 3.3V, 0.2A

750311659 300 2 1:1:0.2 1500 560 Würth Elektronik 48V to 24V, 0.07A

750311660 350 3 2:1:0.33 1500 520 Würth Elektronik 48V to 15V, 0.1A

48V to 12V, 0.12A

24V to 15V, 0.09A

12V to 15V, 0.045A

750311838 350 3 2:1:1 1500 520 Würth Elektronik 48V to ±15V, 0.05A

48V to ±12V, 0.06A

24V to ±15V, 0.045A

750311963 200 0.4 1:5:5 1500 650 Würth Elektronik 12V to ±70V, 0.004A

12V to ±100V, 0.003A

12V to ±150V, 0.002A

750311966 120 0.45 1:5:0.5 1500 900 Würth Elektronik 12V to +120V and

–12V, 0.002A

10396-T024 300 2.0 4:1:1 1500 500 Sumida 48V to 5V, 0.3A