Flyback Transformer
for
TI TPS55340 DC-DC Regulator
- Developed for use with TI TPS55340 Boost/SEPIC/Flyback DC-DC Regulator.
- Designed to operate at 200 kHz with 2.9 – 32 V input
- 1500 Vrms, one minute isolation from primary windings to secondary windings
- RoHS-compliant. Tin-silver (96.5/3.5) over tin over copper over steel terminations
SPECIFICATIONS
Dimensions 
Tape and reel specifications 
Schematic 
3D model
| Part number1 Click to get parts |
L at 0 A2 ±10% (µH) |
L
at Ipk3 min (µH) |
DCR max (Ohms)4 | Leakage L max5 (µH) |
Turns ratio6 pri : sec |
Ipk3 (A) |
Output7 | |
|---|---|---|---|---|---|---|---|---|
| pri | sec | |||||||
| NA5889-AL_ | 12 | 10.8 | 0.03 | 0.0195 | 0.140 | 1: 0.833 | 5.5 | 12 V, 1 A |
| 1 | When ordering, please specify packaging code: e.g. NA5889-ALD | |
| Packaging: | D = 13"
machine-ready reel EIA 481 embossed plastic tape 175 parts per full reel; B = Less than full reel In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter D instead. |
|
| 2 | Inductance is for the primary, measured at 50 kHz, 0.1 Vrms, 0 Adc. | |
| 3 | Peak primary current drawn at minimum input voltage. | |
| 4 | DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator. | |
| 5 | Leakage inductance is for the primary and is measured at 50 kHz, 0.1 Vrms, 0 A with secondary windings shorted. | |
| 6 | Turns ratio is with the primary and the secondary windings connected in parallel. | |
| 7 | Output is with the secondary windings connected in parallel.; | |
| 8 | Ambient temperature range: | −40°C to +85°C |
| 9 | Storage temperature range: | Component: −40°C to +85°C Tape and reel packaging: −40°C to +80°C |
| 10 | 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. | |
| 11 | 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. | ||
 |
||