ltc3557-ltc3557-1 Linear Technology Corporation, ltc3557-ltc3557-1 Datasheet - Page 11

• Manufacturer Part Number: ltc3557-ltc3557-1
• Description: Usb Power Manager With Li-ion Charger And Three Step-down Regulators
• Manufacturer: Linear Technology Corporation

BLOCK DIAGRAM
24
27
18
19
28
10
11
14
1
2
9
8
V
CLPROG
V
NTC
CHRG
ILIM0
ILIM1
EN1
EN2
EN3
MODE
RST2
BUS
NTC
MONITOR
BATTERY
CHARGE
STATUS
LOGIC
TEMP
ILIM
DETECT
WALL
3
LOGIC
WALL
EN
CURRENT
INPUT
LIMIT
REF
CHARGER
CC/CV
GND
25
29
ACPR
DIODE
IDEAL
OSC
EN
MODE
OSC
EN
MODE
OSC
EN
MODE
–
+
BUCK REGULATOR
BUCK REGULATOR
BUCK REGULATOR
600mA, 2.25MHz
400mA, 2.25MHz
400mA, 2.25MHz
15mV
+
–
CONTROL
V C
26
LTC3557/LTC3557-1
V
C
3.3V
LDO
LDO3V3
PROG
GATE
V
SW1
SW2
SW3
V
V
BAT
FB1
FB2
FB3
OUT
IN1
IN2
35571 BD
23
21
22
20
16
15
13
17
12
4
6
5
7
11
35571fa