LTC3553 Linear Technology Corporation, LTC3553 Datasheet - Page 32

• Manufacturer Part Number: LTC3553
• Description: Micropower USB Power Manager
• Manufacturer: Linear Technology Corporation

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LTC3553
TYPICAL APPLICATION
32
4.35V TO 5.5V
USB INPUT
100k
R2
100k
R1
T
R
1.87k
PROG
PB1
C3
10μF
USB PowerPath With Li-Ion Battery (NTC Qualifi ed Charging)
19
1
5
2
6
7
3
4
20
15
16
V
NTC
PROG
HPWR
SUSP
LDO_ON
SEQ
STBY
BUCK_ON
PBSTAT
ON
BUS
LTC3553
GND
BUCK_FB
LDO_FB
V
CHRG
INLDO
V
BVIN
LDO
BAT
OUT
SW
18
14
17
12
11
10
9
13
8
10μH
10pF
L1
C5
+
C1
10μF
SYSTEM LOAD
R3
Li-Ion
BATTERY
C2
2.2μF
2.05M
R
332k
R
UP1
R
UP2
R
649k
649k
LO1
LO2
3.3V
1.2V
4.7μF
10μF
C4
C6
100k
R3
I/O
CORE
PBSTAT
BUCK_ON
STBY
LDO_ON
SUSP
HPWR
EN
μC
LDO
3553 TA02
1.8V
MEMORY
3553f