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Document 183
Magnetics for LM258X Flyback Regulator
These standard flyback regulator transformers ...
www.DataSheet4U.com
Document 183
Magnetics for LM258X Flyback
Regulator
These standard flyback
regulator transformers are designed for use with National Semiconductor LM2585, LM2586, LM2587 and LM2588 SIMPLE SWITCHER ® switching
regulators. They are available in both surface mount and through hole configurations. All feature 500 V isolation between windings and a variety of available turns ratios.
Ref. number T1 (SM) T1 (PC) T2 (SM) T2 (PC) T3 (PC) T4 (PC) T5 (SM) T5 (PC) T6 (SM) T6 (PC) T7 (SM) T7 (PC) Part number Q4435-B Q4434-B Q4436-B Q4337-B Q4343-B Q4344-B Q4437-B Q4338-B Q4438-B Q4339-B S6057-A S6000-A L ±15% (µH) 22 22 22 22 85 85 55 66 65 66 47 47 Turns ratio 1:1 1:1 1 : 2.50 : 2.50 1 : 2.50 : 2.50 1 : 0.8 : 0.8 1 : 0.35 : 0.8 : 0.8 1 : 0.5 : 1.167 : 1.167 1 : 0.5 : 1.167 : 1.167 1 : 1.20 : 1.20 1 : 1.20 : 1.20 1:1 1:1 Isolation pri/sec (Vrms) 500 500 500 500 500 500 500 500 500 500 500 500
1 Operating temperature range -40° C to +85°C. 2 Electrical specifications at 25° C.
Surface Mount - T1, T2, T5, T6, T7
T1, T7
T2, T6
T5
A max 1.00/25,40
B max .750/19,05
C max .600/15,24
D .870/22,10
E .670/17,02
G .100/2,54
H .150/3,81
I .100 x .020/2,54 x 0,51
Leaded - T1, T2, T5, T6, T7
1
T1, T7
T2, T6
T5
A max .950/24,13
B max .825/20,96
C max .700/17,78
D max .180/4,57
F .514/13,06
G .150/3,81
H .200/5,08
I dia. .047/1,19
Leaded - T3, T4
T3 T4
A max 1.100/27,94
B max 1.100/27,94
C max .950/24,13
D max .180/4,57
F .620/15,75
G .150/3,81
H .2...
