LTC4099 Linear Technology Corporation, LTC4099 Datasheet - Page 12

• Manufacturer Part Number: LTC4099
• Description: I2C Controlled USB Power Manager/Charger
• Manufacturer: Linear Technology Corporation

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TO AUTOMOTIVE,
TO USB
OR WALL
ADPAPTER
LTC4099
BLOCK DIAGRAM
12
FIREWIRE, ETC.
T
NTC
20
13
19
1
3
2
NTCBIAS
OVSENS
OVGATE
V
CLPROG
NTC
BUS
I
SWITCH
1.18V
/N
–
+
–
+
–
+
I
LDO
OVERVOLTAGE PROTECTION
–
+
/M
V
2
OUT
TOO COLD
TOO WARM
OVERTEMPERATURE
100mV
AVERAGE INPUT
CURRENT LIMIT
CONTROLLER
SUSPEND
LDO
–
+
+
–
15
DV
+–
OSC
CC
4.6V
–
I
2
C PORT
16
+
SCL
AVERAGE OUTPUT
VOLTAGE LIMIT
6V
CONTROLLER
S
R
17
SDA
Q
NONOVERLAP
AND DRIVE
GND
LOGIC
9
BATTERY CONDITIONER
3.85V
4
V
C
V
V
IN
C
GND
–
+
+
21
+
–
3.6V
0.3V
+ –
LT3480
CONSTANT-CURRENT
CONSTANT-VOLTAGE
–
+
BATTERY CHARGER
SW
FB
V
–
+
+
PROG
Bat-Track HV CONTROL
V
3.6V
BAT + 0.3V
7
OUT
PROG
I
BAT
/1030
V
C/x
INTERRUPT LOGIC
5
IDEAL
DIODE
15mV
0V
4.3V
WALL
+
–
–
+
–
+
+
–
C/x
BATSENS
IDGATE
ACPR
V
BAT
IRQ
SW
OUT
4099 BD
18
14
12
10
11
6
8
SINGLE-
Li-Ion
CELL
+
OPTIONAL
EXTERNAL
IDEAL DIODE
PMOS
TO
SYSTEM
LOAD
4099f