LT1619 Linear Technology, LT1619 Datasheet - Page 17

• Manufacturer Part Number: LT1619
• Description: Low Voltage Current Mode PWM Controller
• Manufacturer: Linear Technology

20SV150M
TYPICAL APPLICATIO S
10.5V TO
(OS-CON)
13.7V
SANYO
150 F
V
20V
IN
0.1 F
10k
Figure 18a. Isolated Local SLIC Power Supply (Flyback) 20W Total Output Power (65V/0.3A or 32.5V/0.6A)
20k
82k
8.1V
100
1 F
1
2
3
4
0.22 F
50V
S/S
FB
V
GND
C
LT1619
SENSE
1k
1W
GATE
DRV
MBRS1100T3
V
IN
U
8
7
6
5
Figure 18b. Efficiency of the Isolated Local SLIC (Flyback)
10 F
90
85
80
75
70
65
60
55
50
43
10
330pF
50V
W1
W4
•
•
LOAD CURRENT (mA)
0.008
IRLR024N
55V, 0.065
Q
T1
G
= 15nC
•
•
W3
W2
100
330pF
1 F
50V
100V
MBRS1100T3
MBRS1100T3
1/4W
43
V
V
V
IN
IN
IN
= 13.7V
= 12V
= 10.5V
1619 F18b
W4 6T TRIFILAR 28AWG
W1 6T TRIFILAR 28AWG
1000
2.2 F
40V
2.2 F
40V
W3 24T 28AWG
W2 24T 28AWG
–32.5V
–65V
62k
CORE SET (0.013" GAP, AI = 100nH/T
470pF
2.49k
10k
PHILIPS EFD20-3F3-A100-S
100
T1
6.2V
220pF
121
1
2
3
4
2mil
POLYESTER
FILM
COLL
NC
V+
NC
LT1431
2
LT1619
SGND
FGND
REF
NC
CNY17-3
17
470
8
7
6
5
1619 F18a
1619fa