Datasheet

LTC3577/LTC3577-1
23
3577fa
OPERATION
V
IN
2
3
DFLS240L
0.47µF
22µF
C
OUT
V
OUT
UP TO
2A
BAT
3577 F03
Li-Ion
Si2333DS
Si2333DS
(OPT)
6.8µH
4
5
6
7
NC
NC
10
BOOST
V
C
42 4 41
39
37
38
LTC3577
WALL ACPR
IDGATE
V
OUT
BAT
RUN/SS
150k
40.2k
68nF
4.7µF
HV
IN
8V TO 38V
(TRANSIENTS
TO 60V)
499k
100k
SW
R
T
1
BD
8
11 9
FB
LT3480
LT3480
HIGH VOLTAGE
BUCK CIRCUITRY
GND V
C
+
Figure 3. LT3480 Buck Control Using V
C
(800kHz Switching)
V
IN
R
T
1
2
MBRM140
0.1µF
10µF
C
OUT
UP TO
1.2A
V
OUT
BAT
3577 F04
Li-Ion
Si2333DS
Si2333DS
(OPT)
6.8µH
1N4148
3
4
6
BOOST
V
C
42 4 41
39
37
38
LTC3577
WALL ACPR
IDGATE
V
OUT
BAT
SHDN
150k
806k
BZT52C16T
20k
68nF
1µF
HV
IN
8V TO 36V
49.9k
10.0k
SW
7
5, 9 8
FB
LT3505
LT3505
HIGH VOLTAGE
BUCK CIRCUITRY
GND V
C
+
Figure 4. LT3505 Buck Control Using V
C
(2.2MHz Switching with Frequency Foldback)