Document 896-1
Flyback Transformer
For Linear Technology LT3799
Isolated LED Controller
• Developed for Linear Technology for use with their LT3799
Isolated LED Controller with active power factor correction
• Mounted on LT3799 Demo Board
• Universal input; 24 Watt output
• 3000 Vrms, one minute primary to secondary isolation;
500 Vrms, one minute primary to bias isolation
Core material
Ferrite
Terminations
RoHS compliant tin-silver over tin over copper. Other
terminations available at additional cost.
Weight
13.9 g
Ambient temperature
–40°C to +85°C
Storage temperature
Component: –40°C to +85°C.
Tray packaging: –40°C to +80°C
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
100 per tray
PCB washing
Only pure water or alcohol recommended
Part
number
JA4429-AL
Inductance Inductance
at 0 A
1
min at
Ipk
2
±10% (µH)
(µH)
400
320
DCR max
(Ohms)
0.252 (Pri)
0.126 (Sec)
0.149 (Bias)
Leakage
inductance
max (µH)
3
7.5
Turns ratio
Pri : Sec Pri : Bias
1
:
0.24
1
:
0.24
Ipk
2
(A)
1.3
Output
4
24 V, 1.0 A
1. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/
HP 4263B impedance analyzer or equivalent.
2. Peak primary current drawn at minimum input voltage.
3. Leakage inductance is for the primary and is measured with the sec-
ondary shorted.
4. Output is for the secondary. Bias winding output is 24 V, 20 mA.
5. Electrical specifications at 25°C.
Dot indicates pin 1
0.680 max
17,30
1
Pri
2
3
Bias
4
7
Sec
6
0.590
15,0
0.830
21,1
4
5
0.110
min
2,79
0.197
5,0
0.025
0,64
0.590
15,0
1
8
0.197
5,0
0.830 max
21,1
1
8
4
5
0.055
∅
1,4
Dimensions are in
inches
mm
Recommended
PC Board Layout
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 896-1
Revised 11/14/17
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
