Datasheet

LTC3677-3
44
36773f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2010
LT 0310 • PRINTED IN USA
relaTeD parTs
PART NUMBER DESCRIPTION COMMENTS
LTC3556 High Efficiency USB Power Manager Plus Dual
Buck Plus Buck-Boost DC/DC PMIC
Two 400mA Synchronous Buck Regulators, One 1A Buck-Boost Regulator, 4mm ×
5mm QFN28 Package.
LTC3557/
LTC3557-1
USB Power Manager with Li-Ion/Polymer
Charger and Triple Synchronous Buck Converter
Linear Power Manager and Three Buck Regulators, 4mm × 4mm QFN28 Package,
LTC3557-1 Version Has 4.1V Float Voltage.
LTC3577/
LTC3577-1
Highly Integrated Protable/Navigation PMIC
Linear Power Manager and Three Buck Regulators, 10-LED Boost Regulator, 2× 150mA
LDOs, 4mm × 7mm QFN44 Package, LTC3577-1 Version Has 4.1V Float Voltage.
Typical applicaTion
WALL
5V WALL
ADAPTER
OPTIONAL OVERVOLTAGE/
REVERSE VOLTAGE PROTECTION
ACPR
OVGATE V
INLDO1
4 41
30
V
OUT
39
10µF
13
6.2k
D3
5.6V
R1
500k
Si2306BDSSi2333DS
OVSENSE
8
V
BUS
PROG
CLPROG
LDO1
LDO1_FB
LDO2
LDO2_FB
40
USB
36
43
DV
CC
10
SDA
SCL
11
499k
12
EXTPWR
PBSTAT
42
16
PWR_ON
14
I
LIM0
1
I
LIM1
2
24
29
23
28
ON
15
10µF
LTC3677-3
GND
V
IN3
6
44
2.2µF
V
IN12
CHRG
37
IDGATE
38
BAT
32
NTCBIAS
34
NTC
35
2.2µF
1k
100k
BAT
V
OUT1
3.3V
500mA
Li-Ion
100k
NTC
Si2333DS
Si2333DS
(OPT)
324k
SW1
33
FB1
26
V
INLDO2
30
4.7µH
2k
2.1k
+
1.02M10pF 10µF
V
OUT2
1.8V
500mA
649k
SW2
31
FB2
25
4.7µH
806k10pF 10µF1µF
1µF
V
OUT3
1.3V
800mA
649k464k
100k
470k
PUSHBUTTON
SW3
5
FB3
PGOOD
7
21
45
3.3µH
402k10pF
1.00M
115k
V
LDO2
1.0V
150mA
V
LDO1
2.5V
150mA
10µF
36773 TA03
499k499k
DV
CC
SDA
SCL
EXTPWR
PBSTAT
PWR_ON
KILL
I
LIM0
EN3
17
EN3
I
LIM1
µC/µP
RST
NC
3, 9, 18 ,19, 20, 22
20µF
V
OUT
SYSTEM LOAD