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LTC3445 데이터 시트보기 (PDF) - Linear Technology
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LTC3445
3A/ 4MHz/ Monolithic Synchronous Step-Down Regulator
Linear Technology
LTC3445 Datasheet PDF : 24 Pages
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W
FU CTIO AL DIAGRA S
V
CC
PWR_EN
V
CC1
OR GND
V
CC1
OR GND
RUN
15
SDA
6
SCL
8
ADD7
5
ADD6
9
I
2
C
STRAPPABLE
STRAPPABLE
V
CC
PGOOD
4
POWER
GOOD
BUCK/LDO
ENABLE
BURST
V
REF
DAC
SLEW
CONTROL
V
OUT
CONTROL
0.6V
3
V
CC1
POWER FOR ALL EXCEPT
LDOs AND BUCK PFET
SOFT-START
SPREAD
SPECTRUM
C
IN1
10
V
CC1
BUCK REGULATOR
V
REF
SW
OSC ADJUST FB
GND
LTC3445
L1
SW
14
FB
17
C1
GND
11
V
CC2
V
CC
22
POWER FOR LDOs
LDO1
REF
OUT
FB
LDO2
REF
OUT
FB
V
CC1
EXPOSED PAD
25
LDO1 OUT
21
LD01FB
20
LDO2 OUT
23
LD02FB
24
R1
C11
R2
R3
C21
R4
V
TRACK
1
V
BACKUP
V
BACKUP
3V
+
2
COIN
CELL
PowerPath
LDO
PowerPath
CONTROL
POWER
SWITCH
DRIVER
POWER
SWITCH
Figure 1
V
CC
BATT
18
BATTFAULT
19
V
BACKUP
3445 F01
3445fa
9
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