DA2077-AL Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 518
Flyback Transformer ForONSemiconductor
NCP1027
The DA2077-AL flyback transformer has been specifi-
cally developed for use with ON Semiconductor’s
NCP1027 Standby Power Supply for ATX Applications
and is specified in Application Note AND8241/D.
This transformer is designed for universal input, 85 –
265 Vac. It operates in continuous conduction mode
within an input voltage range of 120 Vdc to 375 Vdc and
at a 65 kHz switching frequency. Primary to secondary
isolation is 2000 Vrms.
Coilcraft can also custom engineer a transformer to
meet your specific requirements. For free evaluation
samples, contact Coilcraft or visit www.coilcraft.com.
Part
number
DA2077-AL
Inductance
at 0 A¹
±10% (mH)
3.4
DCR max (Ohms)
pri
sec aux
2.53 0.042 0.574
1. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc
2. Leakage inductance tested at 100 kHz, 0.1 Vrms
3. Operating temperature range -40°C to +85°C.
4. Electrical specifications at 25°C.
Leakage
inductance²
max (µH)
114
Turns ratio
pri : sec pri : aux
1 : 0.06 1 : 0.15
Output
5 V, 2 A (sec)
12.5 V, 10 mA (aux)
1.100 _max
27,94
0.950 _max
24,13
10
Primary
6
7
Auxiliary
9
5
Secondary
1
0.620
15,75
0.150 ±0.030
3,81 ±0,76
Recommended
0.150 ^{Board Layout}
3,81
5
6
1
1.100
27,94
max
0.200
5,08
(7
places)
1
10
0.0346
0,879
Bottom View
0.620
15,75
0.060
1,52
Weight:
16.5 g
Terminations: Matte tin over copper
Packaged: 49 parts per tray
Specifications subject to change without notice.
Please check our website for latest information.
Document 518 Revised 12/02/08
© Coilcraft, Inc. 2008