GA3172_12 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 682
Flyback Transformer For Microchip Technology’s
Isolated AC LED driver
• Developed specifically for Microchip Technology’s
Isolated AC LED driver to operate with PIC16HV785 CMOS
Microcontroller and MCP1402 Gate Driver
• Universal ac input; 20 V, 0.7 A output; Operates at 125 kHz
• 3000 Vrms, one minute isolation from the primary and bias
to the secondary winding
• Bias winding supplies 12 V to power the microprocessor
Core material Ferrite
Terminations  RoHS tin-silver over tin over copper clad steel. Other
terminations available at additional cost.
Weight  11.7 g
Ambient temperature  –40°C to +85°C
Storage temperature  Component: –40°C to +85°C.
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  117 parts per tray
PCB washing  Only pure water or alcohol recommended
Inductance Inductance
Part
number
Po(Ww)er _±1  a0t%0
A¹
(µH)
m^{  aint I}(pµkH²)
 DCR max (Ohms)
pri   sec   bias
GA3172-AL 14
500
450 0.675 0.245 0.325
Leakage
 
inductance³
max (µH)
8.25
Turns ratio
pri : sec  pri : bias
1 : 0.214 1 : 0.131
  _Ipk2
(A)
0.78
  ^Output4
20 V, 0.7 A
1. Inductance measured at 125 kHz, 0.1 Vrms, 0 Adc.
2. Peak primary current drawn at minimum input voltage.
3. Leakage inductance is for the primary and is measured with the secondary
shorted.
4. Output is for the secondary. Bias winding output is 12 V.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Dot indicates pin 1
0.935
23,74
2
Pri
1
5
Bias
4
10
Sec
0.400
10,16
0.118
3,00
min
0.020
Recommended
6
0,50
0.561
PC Board Layout
14,25
5
6
0.150
3,80
typ
1
0.400
10,16
0.876
22,25
1
10
0.039
1,00
∅
(10 ×)
Dimensions are in
inches
mm
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Document 682  Revised 09/01/09
© Coilcraft Inc. 2012
This product may not be used in medical of high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.