LTC4055 Linear Technology, LTC4055 Datasheet - Page 10

• Manufacturer Part Number: LTC4055
• Description: USB Power Controller and Li-Ion Linear Charger
• Manufacturer: Linear Technology

BLOCK DIAGRA
LTC4055
10
100k
100k
100k
100k
11
13
15
16
9
8
5
CLPROG
PROG
HPWR
ACPR
WALL
V
NTC
NTC
1V
500mA/100mA
+
–
0.1V
2u
–
+
–
+
+
–
+
+
–
–
NTC
W
1V
1V
NTC ENABLE
2HOT
2COLD
TEMP
DIE
–
TA
105 C
CURRENT CONTROL
+
V
REF
–
VR
+
NTCERR
10
GND
I
LIM
2u
SOFT-START
SENSE
VOLTAGE DETECT
V
CONTROL LOGIC
CURRENT LIMIT
BUS
IN1 OUT BAT
6
SHDN
UVLO
4
7
IN1
IN1
I
LIM
ENABLE
SUSP
0.2
CNTL
RECHRG
2u
I
BAT UV
CHRG
RESET
HOLD
OUT
SOFT-START2
3
OUT
BATTERY CHARGER
25mV IDEAL
–
+
OSCILLATOR
COUNTER
DIODE
0.2
I/O SEL
BAT UV
CLK
CC/CV REGULATOR
2
ENABLE
BAT
CHARGER
BAT
0.2
+
–
+
–
+
–
IN2
1
0.25V
2.8V
BATTERY
UVLO
4.1V
RECHARGE
IN2
STOP
TIMER
CHRG
4055 BD
12
14
4055p