Datasheet

LT3573
11
3573fd
For more information www.linear.com/LT3573
APPLICATIONS INFORMATION
TRANSFORMER DESIGN CONSIDERATIONS
Transformer specification and design is perhaps the most
critical part of successfully applying the LT3573. In addition
to the usual list of caveats dealing with high frequency
isolated power supply transformer design, the following
information should be carefully considered.
Linear Technology has worked with several leading mag
-
netic component manufacturers to produce pre-designed
flyback tr
ansformers for use with the LT3573. Table 5 shows
the details of several of these transformers.
Table 5. Predesigned Transformers—Typical Specifications, Unless Otherwise Noted
TRANSFORMER
PART NUMBER
SIZE (W × L × H)
(mm)
L
PRI
(µH)
L
LEAKAGE
(nH) N
P
:N
S
:N
B
R
PRI
(mΩ)
R
SEC
(mΩ) VENDOR
TARGET
APPLICA
TIONS
PA2362NL
15.24 × 13.1 × 11.45
24 550 4:1:1 117 9.5 Pulse Engineering
24V→3.3V, 1.5A
PA2454NL
15.24 × 13.1 × 11.45
24 430 3:1:1 82 11 Pulse Engineering
24V→5V, 1A
PA2455NL
15.24 × 13.1 × 11.45
25 450 2:1:1 82 22 Pulse Engineering
24V→12V, 0.5A
PA2456NL
15.24 × 13.1 × 11.45
25 390 1:1:1 82 84 Pulse Engineering
12V→12V, 0.3A
24V→12V, 0.4A
36V→5V, 0.6A
P
A2617NL
12.70 × 10.67 × 9.14
21 245 1:1:0.33 164 166 Pulse Engineering
24V→15V, 0.4A
PA2626NL
12.70 × 10.67 × 9.14
30 403 3:1:1 240 66 Pulse Engineering
24V→5V, 1A
PA2627NL
15.24 × 13.1 × 11.45
50 766 3:1:1 420 44 Pulse Engineering
24V→5V, 1A
GA3429-BL
15.24 × 12.7 × 11.43
25 566 4:1:1 95 7.5 Coilcraft
24V→3.3V, 1.5A
750310471
15.24 × 13.3 × 11.43
25 350 3:1:1 57 11 Würth Elektronik
24V→5V, 1A
750310559
15.24 × 13.3 × 11.43
24 400 4:1:1 51 16 Würth Elektronik
24V→3.3V, 1.5A
750310562
15.24 × 13.3 × 11.43
25 330 2:1:1 60 20 Würth Elektronik
24V→12V, 0.5A
750310563
15.24 × 13.3 × 11.43
25 325 1:1:0.5 60 60 Würth Elektronik
12V→12V, 0.3A
24V→12V, 0.4A
36V→5V, 0.6A
750310564
15.24
× 13.3 × 11.43
63 450 3:1:1 115 50 Würth Elektronik
24V→±5V, 0.5A
750310799
9.14 × 9.78 × 10.54
25 125 1:1:0.33 60 74 Würth Elektronik
24V→15V, 0.4A
750370040
9.14 × 9.78 × 10.54
30 150 3:1:1 60 12.5 Würth Elektronik
24V→5V, 1A
750370041
9.14 × 9.78 × 10.54
50 450 3:1:1 190 26 Würth Elektronik
24V→5V, 1A
750370047
13.35 × 10.8 × 9.14
30 150 3:1:1 60 12.5 Würth Elektronik
24V→5V, 1A
750311681
17.75 × 13.46 × 12.70
100 3000 1:10 220 28500 Würth Elektronik
12V→300V, 5mA
L11-0059
9.52 × 9.52 × 4.95
24 3:1 266 266 BH Electronics
24V→5V, 1A
L10-1019
9.52 × 9.52 × 4.95
18 1:1 90 90 BH Electronics
5V→5V, 0.2A