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Part Name
Description
LTC3577 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC3577
Highly Integrated 6-Channel Portable PMIC
Linear Technology
'LTC3577' PDF : 54 Pages
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LTC3577/LTC3577-1
OPERATION
HV
IN
8V TO 38V
(TRANSIENTS
TO 60V)
4.7μF
4
2
V
IN
BOOST
68nF
150k
LT3480
5
3
RUN/SS SW
10
R
T
40.2k
7
NC
6
NC
1
BD
8
FB
GND V
C
LT3480
HIGH VOLTAGE
BUCK CIRCUITRY
11 9
0.47μF
6.8μH
DFLS240L
499k
22μF
100k
Si2333DS
UP TO
2A
42 4 41
V
C
WALL
ACPR
V
OUT
39
LTC3577 IDGATE
37
BAT
38
V
OUT
C
OUT
Si2333DS
(OPT)
+
BAT
Li-Ion
3577 F03
Figure 3. LT3480 Buck Control Using V
C
(800kHz Switching)
HV
IN
8V TO 36V
1N4148
3
1
V
IN
BOOST
1μF
68nF
150k
4
LT3505
SHDN
SW
2
0.1μF
6.8μH
BZT52C16T
MBRM140
20k
806k
LT3505
HIGH VOLTAGE
BUCK CIRCUITRY
6 R
T
GND
7
FB
V
C
5, 9 8
42 4 41
V
C
WALL
ACPR
V
OUT
39
LTC3577 IDGATE
37
BAT
38
49.9k
10μF
10.0k
Si2333DS
UP TO
1.2A
V
OUT
C
OUT
Si2333DS
(OPT)
+
BAT
Li-Ion
3577 F04
Figure 4. LT3505 Buck Control Using V
C
(2.2MHz Switching with Frequency Foldback)
3577f
22
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