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Part Name
Description
LTC3556EUFD-TRPBF View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC3556EUFD-TRPBF
High Efficiency USB Power Manager with Dual Buck and Buck-Boost DC/DCs
Linear Technology
'LTC3556EUFD-TRPBF' PDF : 38 Pages
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LTC3556
TYPICAL APPLICATION
Watchdog Microcontroller Operation
USB/WALL
4.5V TO 5.5V
C1
10μF
100k
T
8.25Ω
2k
25
V
BUS
3
NTC
20
PROG
2
CLPROG
0.1μF
3.01k
SW
26
V
OUT
24
GATE
22
BAT
23
GND
29
CHRG
21
V
OUT3
12
L1
3.3μH
MP1
+
Li-Ion
10pF
C2
22μF
RED
121k
510Ω
TO OTHER
LOADS
2.5V TO
3.3V
1A
HDD
PUSHBUTTON
MICROCONTROLLER
1
1μF
10
2
13,16
LDO3V3
DV
CC
8
V
C3
7
FB3
14
SWCD3
9
SWAB3
V
IN3
11
LTC3555
SW2
19
FB2
17
I
2
C (SCL, SDA)
330pF
15k
324k
105k
L2
2.2μH
L3
4.7μH
1.02M
10pF
806k
33pF
10μF
22μF
2.2μF
1μF
C1: MURATA GRM21BR61A106KE19
C2: TDK C2012X5R0J226M
L1: COILCRAFT LPS4018-332LM
L2: COILCRAFT LPS4018-222MLC
L3, L4: TOKO 1098AS-4R7M
MP1: SILICONIX Si2333
28
27
ENALL
SEQ
V
IN2
18
SW1
4
L4
4.7μH
806k
FB1
6
806k
10pF
10μF
1μF
1.8V
400mA
I/O
MICROPROCESSOR
0.8V TO
1.6V
400mA
CORE
POR
10k
V
IN1
5
PGOODALL
15
3556 TA02
3556f
34
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