GA3502_12 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 708
Flyback Transformer ForMaximMAX16801
Off-Line LED Driver
• Designed for PWM Dimming of High-Brightness LEDs
• Shown on Maxim MAX16801 demonstration board
• Bias winding output: 18 V, 20 mA
• 400 V input; 110 V, 0.4 A output
• 1500 Vrms, one minute primary and bias to secondary isolation
Core material Ferrite
Terminations  RoHS tin-silver (96.5/3.5) over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight  21.3 g
Ambient temperature  –40°C to +125°C
Storage temperature  Component: –40°C to +125°C.
Tray packaging: –40°C to +80°C
Resistance to soldering heat  Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
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 24 parts per tray
PCB washing  Only pure water or alcohol recommended
Inductance
Part
  _{at 0 Adc}1
  _number
±10% (µH)
Inductance Leakage
  _{at Ipk}2
DCR max ^  Inductance³
  Turns ratio
min (µH)
(Ohms)
max (µH)
  _{pri : sec   pri : bias}
GA3502-BL
800
720
1.283 (pins 1 – 3)
6.60

0.146 (pins 5 – 6)

0.361 (pins 12 – 7)
1 : 0.35 1 : 0.06
  _Ipk2
(A)
0.75
  _Output4
110 V, 0.4 A
1. Inductance is for the primary (pins 1 – 3), measured at 250 kHz, 0.3 Vrms.
2. Peak primary current drawn at minimum input voltage.
3. Leakage inductance is for the primary winding (pins 1 – 3) with the secondary
winding shorted.
4. Output is for the secondary. Bias winding output is 18 V, 20 mA.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
1
Pri 2
12
0.108
1.10
Sec
2,75
28,0
7
1
0.004 / 0,10 mm
0.079
2,0
12
6
Dot indicates pin 1
1.169
29,7
1.285
32,65
max
1.024
26,0
0.551
14,0
max
0.043
1,1
7
3
5
Bias
6
Recommended
Land Pattern
6
7 ^0.157
4,0
1.053
26,75
max
1
0.657
16,7
12 _0.157
4,0
Dimensions are in
inches
mm
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 708  Revised 12/15/11
© Coilcraft Inc. 2012
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.