Datasheet

LTC4160/LTC4160-1
12
41601fa
BLOCK DIAGRAM
+ –
+ + –
0.3V
V
CLPROG
3.6V
CLPROG
I
SWITCH
/N
+
–
+
–
15mV
OmV
IDEAL DIODE
PWM AND
GATE DRIVE
AVERAGE V
BUS
CURRENT LIMIT
CONTROLLER
V
BUS
VOLTAGE
CONTROLLER
V
OUT
VOLTAGE
CONTROLLER
+ –
5.1V
IDGATE
10
V
OUT
12
SW
TO SYSTEM LOAD
SINGLE CELL Li-Ion
41601 BD
14
BAT
11
TO USB
OR WALL
ADAPTER
OPTIONAL EXTERNAL
OVERVOLTAGE PROTECTION
N-CHANNEL MOSFET
OPTIONAL
EXTERNAL
OVERVOLTAGE
PROTECTION
RESISTOR
+
V
BUS
+ –
6V
OVERVOLTAGE PROTECTION
×2
+ –
+
–
1V
BATTERY CHARGER
I
BAT
/1000
+ –
V
FLOAT
+
–
PROG
8
17 13
2
OVSENS
1
OVGATE
+
–
3.3V
LDO3V3
3V3 LDO
18
+ –
+
–
4.6V
100mV
SUSPEND
LDO
I
LDO
/M
20
+ – + – + –
0.1V
UNDERTEMP
OVERTEMP
NTC
NTCBIAS
V
OUT
NTC
T
NTC FAULT LOW BAT
ENOTG
NTC ENABLE
6
ID
5
CONTROL LOGIC
GND
21
19
ENCHARGER
716
I
LIM0
15
I
LIM1
4HRS
100mV
+ –
2.9V
+ –
RECHRG
V
RECHRG
FAULT
+ –
9
CHRG
OTG SHORT CIRCUIT BAD CELL
4
FAULT
VBUSGD
4.3V
0.2V
BAT
3
VBUSGD
– + + –
+
–
OPTIONAL EXTERNAL IDEAL DIODE P-CHANNEL MOSFET