Q4435-BL Datasheet, PDF (1/3 Pages) Coilcraft lnc. – Magnetics for LM258X Flyback Regulator

Document 183-1
Magnetics for LM258X Flyback Regulator
These standard flyback regulator transformers are de-
signed for use with National Semiconductor LM2585,
LM2586, LM2587 and LM2588 SIMPLE SWITCHER^®
switching regulators.
They are available in surface mount and through hole
configurations. All feature 500 V isolation between wind-
ings 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)
Volt-time
Input Inductance Inductance product Leakage
Part voltage at 0 Adc at I pk
max Inductance^{1 DCR (Ohms)}
number (V) ±15% (µH) min (µH) (Vµsec) max (µH) pri
sec
Turns ratio
pri : sec Output
Q4435-BL 4 – 6
22
19.0
166.5
0.7
0.020 0.025
1:1
5 V, 1.6 A
Q4434-BL 4 – 6
22
19.8
162.0
2.0
0.028 0.028
1:1
5 V, 1.6 A
Q4436-BL 4 – 6
22
17.6
166.5
0.5
0.025 0.23 (10-11) 1 : 2.5 12 V, 0.35 A
0.25 (9-8)
1 : 2.5 12 V, 0.35 A
Q4337-BL 4 – 6
22
19.8
162.0
2.0
0.030 0.32 (8-7)
1 : 2.5 12 V, 0.35 A
0.32 (6-5)
1 : 2.5 12 V, 0.35 A
Q4343-BL 18 – 36
85
76.5
364.5
3.5
0.150 0.011 (10-9) 1 : 0.8 12 V, 1.4 A
0.011 (7-6) 1 : 0.8 12 V, 1.4 A
Q4344-BL 18 – 36
85
76.5
364.5
3.5
0.145 0.20 (10-9) 1 : 0.8 12 V, 0.75 A
0.20 (7-6)
1 : 0.8 12 V, 0.75 A
0.03 (4-5)
1 : 0.35 5 V, 3.0 A
Q4437-BL 18 – 36
55
47.3
299.7
2.0
0.110 0.035 (10-11) 1 : 0.5 5 V, 1.8 A
0.30 (9-8)
1 : 1.167 12 V, 0.25 A
0.32 (4-5)
1 : 1.167 12 V, 0.25 A
Q4338-BL 18 – 36
66
59.4
499.5
3.5
0.090 0.039 (8-7) 1 : 0.5 5 V, 1.8 A
0.58 (6-5)
1 : 1.167 12 V, 0.25 A
0.60 (3-4)
1 : 1.167 12 V, 0.25 A
Q4438-BL 18 – 36
65
57.0
299.7
3.0
0.065 0.15 (10-11) 1 : 1.2 12 V, 0.63 A
0.15 (9-8)
1 : 1.2 12 V, 0.63 A
Q4339-BL 18 – 36
66
59.4
499.5
3.0
0.090 0.20 (8-7)
1 : 1.2 12 V, 0.63 A
0.24 (5-6)
1 : 1.2 12 V, 0.63 A
S6057-AL 4 – 6
47
40.0
233.1
2.0
0.065 0.065
1:1
5 V, 0.9 A
S6000-AL 4 – 6
47
40.0
212.6
2.0
0.065 0.042
1:1
5 V, 0.9 A
I pk²
(A)
4.85
5.0
5.0
5.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
1. Leakage inductance measured across the primary at 0.10 Vrms, 100 kHz.
2. DC current at which the primary inductance is measured.
3. Electrical specifications at 25° C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Core material Ferrite
Ambient temperature –40°C to +85°C
Weight
Q4337-BL:
Q4338-BL:
Q4339-BL:
Q4343-BL:
Q4344-BL:
Q4434-BL:
11.4 g
11.5 g
11.6 g
25.1 g
23.1 g
11.5 g
Q4435-BL:
Q4436-BL:
Q4437-BL:
Q4438-BL:
S6000-AL:
S6057-AL:
9.0 g
8.7 g
8.2 g
8.6 g
10.6 g
8.2 g
Storage temperature Component: –40°C to +85°C.
Packaging: –40°C to +80°C
Resistance to soldering heat (SM parts) Max three 40 second
reflows at +260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Mean Time Between Failures (MTBF) 26,315,789 hours
PCB washing Only pure water or alcohol recommended
© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Document 183-1 Revised 10/31/08