Datasheet
LTC4099
12
4099fd
15
2
+
–
+
–
+
–
+
–
+
–
+
–
+
–
TOO COLD
AVERAGE INPUT
CURRENT LIMIT
CONTROLLER
TOO WARM
NTC
NTCBIAS
V
OUT
V
PROG
V
C/x
C/x
NTC
T
19
CLPROG
13
V
BUS
1
OVGATE
20
OVSENS
SCL
OVERTEMPERATURE
16
SDA
17
DV
CC
I
2
C PORT INTERRUPT LOGIC
1.18V
+
–
+
+
–
AVERAGE OUTPUT
VOLTAGE LIMIT
CONTROLLER
BATTERY CONDITIONER
OSC
S
4.6V
s2
100mV
6V
OVERVOLTAGE PROTECTION
SUSPEND
LDO
I
LDO
/MI
SWITCH
/N
TO USB
OR WALL
ADPAPTER
TO AUTOMOTIVE,
FIREWIRE, ETC.
Q
R
3.6V
0.3V
4099 BD
I
BAT
/1030
+
–
+
–
PROG
7
GND
21
8
11
IRQ
BAT
BATSENS
SINGLE-
CELL
Li-Ion
OPTIONAL
EXTERNAL
IDEAL DIODE
PMOS
10
IDGATE
12
V
OUT
TO
SYSTEM
LOAD
ACPR
CONSTANT-CURRENT
CONSTANT-VOLTAGE
BATTERY CHARGER
+
–
0V
15mV
IDEAL
DIODE
+
–
BAT + 0.3V
3.6V
V
OUT
4.3V
+
+
–
+
–
14
SW
18
WALL
NONOVERLAP
AND DRIVE
LOGIC
GND
9
+
5
V
C
4
SW
FB
V
IN
V
C
LT3480
Bat-Track HV CONTROL
6
3
+–
+
–
3.85V
block DiagraM