GA3544_15 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 789-1
Flyback Transformer ForTexasInstrumentsUCD3K
Digital Power Controller
• Specified by Texas Instruments for use in the Bias Power
Supply for their UCD3K Digital Power Controller
• Universal input; 5 Watt output
• 3000 Vrms, one minute isolation Pri and P1 to S1 and
Sense; 1500 Vrms, one minute isolation windings to core
• Designed to meet UL/CSA/IEC 60950 Reinforced Insulation
Class; 3.0 mm creepage and clearance.
Core material Ferrite
Terminations  RoHS compliant tin-silver over tin over copper. Other
terminations available at additional cost.
Weight  13.4 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  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.

Part
number
Inductance Inductance
Leakage
  _{at 0 A}1
  _{at Ipk}2
DCR max inductance
±10% (mH) (mH)
(Ohms) ^  max (µH)³
Turns ratio
Pri : S1 : P1 : Sense
  _Ipk2
(A)
GA3544-BL
2.3
1.61



0.860 (Pri)
17.6
1 : 0.158 : 0.158 : 0.079
0.3
0.131 (P1)
0.109 (S1)
0.155 (Sense)
Output
12 V, 0.2 A (S1)
12 V, 0.2 A (P1)
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. Electrical specifications at 25°C.
Dot indicates pin 1
0.680
17,30
max
3
Vaux
primary
(P1)
4
1
Pri
2
7
Vin
monitor
(Sense)
6
8
Vaux
secondary
(S1)
5
0.590
15,0
0.110
2,79
min
0.197
5,0
0.025
0,64
0.830
21,1
4
5
0.590
15,0
1
8
0.197
5,0
0.830 _max
21,1
1
8
Dimensions are in
inches
mm
0.10,428_âˆ
4
5
Recommended
PC Board Layout
Document 789-1  Revised 11/19/15