LTC3555 Linear Technology, LTC3555 Datasheet - Page 30

• Manufacturer Part Number: LTC3555
• Description: High Efficiency USB Power Manager + Triple Step-Down DC/DC
• Manufacturer: Linear Technology

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LTC3555
TYPICAL APPLICATION
30
4.5V TO 5.5V
USB/WALL
MICROCONTROLLER
C1: MURATA GRM21BR61A106KE19
C2: TDK C2012X5R0J226M
L1: COILCRAFT LPS4018-332LM
L2, L3: TOKO 1098AS-4R7M
L4: TOKO 1098AS-2R0M
MP1: SILICONIX Si2333
PUSH BUTTON
C1
10μF
100k
T
2k
8.2Ω
0.1μF
2
1μF
3k
9,10
16
13
27
28
25
20
1
8
7
3
2
V
NTC
PROG
CLPROG
LDO3V3
DV
I
EN1
EN2
EN3
ILIM0
ILIM1
2
BUS
C
Watchdog Microcontroller Operation
CC
LTC3555
CHRG
RST3
GATE
V
GND
SW1
SW2
SW3
V
V
V
BAT
OUT
FB1
FB2
FB3
SW
IN1
IN2
IN3
26
24
22
23
29
21
17
19
18
6
4
5
12
14
11
15
3.3μH
4.7μH
4.7μH
2μH
L1
L2
L3
L4
+
MP1
1.02M
324k
1.02M
365k
715k
806k
Li-Ion
C2
22μF
10pF
10pF
10pF
RED
10μF
10μF
22μF
510Ω
2.2μF
1μF
1μF
1.61V TO 3.03V
0.8V TO 1.51V
400mA
3.3V
400mA
1A
10k
TO OTHER
LOADS
I/O
CORE
MEMORY
MICROPROCESSOR
POR
3555 TA02
3555f