Flyback Transformer
for
Linear Technology LT3799
- Developed for Linear Technology for use with the LT3799 Isolated LED Controller with active power factor correction
- Mounted on LT3799 Demo Board
- Universal input; 24 Watt output
- Isolation: 3000 Vrms, one minute primary to secondary; 500 Vrms primary to bias, tested for one minute
- RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations.
SPECIFICATIONS
| Part number Click to get parts |
L at 0 A1 ±10% (µH) |
L at Ipk2 min (µH) |
DCR max (Ohms)3 | Leakage L max4 (µH) |
Turns ratio | Ipk2 (A) |
Output5 | |||
|---|---|---|---|---|---|---|---|---|---|---|
| pri | sec | bias | pri : sec | pri : bias | ||||||
| JA4429-AL | 400 | 320 | 0.252 | 0.126 | 0.149 | 7.5 | 1 : 0.24 | 1 : 0.24 | 1.3 | 24 V, 1 A |
| 1 | Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc | |
| 2 | Ipk is peak primary current drawn at minimum input voltage. | |
| 3 | DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator. | |
| 4 | Leakage inductance is for the primary and is measured with the secondary shorted. | |
| 5 | Output is for the secondary. Bias winding output is 24 V, 20 mA. | |
| 6 | Ambient temperature range: | −40°C to +85°C |
| 7 | Storage temperature range: | Component: −40°C to +85°C Packaging tray: −40°C to +80°C |
| 8 | Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. | |
| 9 | Electrical specifications at 25°C. | |
| Refer to Soldering Coilcraft Components before soldering. | ||
| PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info. | ||
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