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LT1619 データシートの表示(PDF) - Linear Technology
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LT1619
Low Voltage Current Mode PWM Controller
Linear Technology
LT1619 Datasheet PDF : 20 Pages
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LT1619
TYPICAL APPLICATIO S
V
IN
4.75V TO
5.25V
+
1500
µ
F
6.3V
SANYO MV-GX
1N749
4.3V
1
µ
F
15
Ω
2.2nF
1
S/S
8
V
IN
1.1k
2
FB
7
DRV
LT1619
3
6
V
C
GATE
36k 4
5
GND SENSE
22nF
10
µ
F
T1: COILTRONICS CTX02-14261, EFD20-3F3, 6 WINDINGS EACH, 12
µ
H
T1
•
•
MBRS340T3
–48V/0.5A
470
µ
F
35V
SANYO MV-GX
•
4.7
µ
F
FILM
470
µ
F
35V
SANYO MV-GX
•
4.7
µ
F
FILM MBRS340T3
SUD45N05-20L
50V, 0.018
Ω
43nC
30
Ω
220pF
0.007
Ω
1M
12k
2N5210
2N5210
1619 F17a
10.5k
1%
432k
1%
Figure 17a. 5V to – 48V Cuk Converter
90
89
88
87
86
85
84
83
82
81
80
79
10
V
IN
= 5.25V
V
IN
= 5V
V
IN
= 4.75V
100
LOAD CURRENT (mA)
1000
1619 F17b
Figure 17b. Efficiency of the 5V to – 48V Cuk
16
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