Datasheet

LTC4098/LTC4098-1
29
40981fc
USB/Automotive Switching Battery Charger with
Automatic Current Limiting on Both Inputs
Low Component Count USB and Automotive High Efficiency Power Manager
TYPICAL APPLICATIONS
V
BUS
V
C
WALL ACPR
AUTOMOTIVE,
FIREWIRE, ETC.
USB
WALL ADAPTER
TO μC
TO μC
SYSTEM
LOAD
C3
10μF
0805
C5
10μF
0805
C1
4.7μF
C2
0.1μF
10V
C4
0.1μF
0603
R2
100k
R1
27.4k
1
7
8
9
3 7 9, 21 6
3
20 18 19 14
12
10
11
2
6
5
4
13
M1
R4
3.01k
R5
1k
D1
L2
3.3μH
L1
4.7μH
40981 TA04
CLPROG PROG
LTC4098/LTC4098-1
LT3653
GND
SW
BATSENS
OVGATE
OVSENS
D0-D2
CHRG
NTCBIAS
NTC
2
1
15-17
8
4
5
V
OUT
IDGATE
BAT
V
OUT
I
SENSE
Li-Ion
+
R3
100k
T
R6
6.04k
V
IN
I
LIM
GND V
C
HVOK
SW
BOOST
M1: ON SEMICONDUCTOR NTLJS4114N
R3: VISHAY-DALE NTHS0603N011-N1003F
3
V
BUS
V
C
WALL ACPR
AUTOMOTIVE,
FIREWIRE, ETC.
USB
WALL ADAPTER
TO μC
TO μC
SYSTEM
LOAD
C3
10μF
0805
C1
4.7μF
C2
0.1μF
10V
C4
0.1μF
0603
R1
27.4k
1
7
8
9
3 7 9, 21 6
3
20 18 19 14
10
11
12
2
6
5
4
13
5
R2
3.01k
R3
1k
D1
L2
3.3μH
L1
4.7μH
40981 TA05
CLPROG PROG
LTC4098/LTC4098-1
LT3653
GND
SW
BATSENS
OVGATE
OVSENS
D0-D2
CHRG
NTCBIAS
NTC
2
1
15-17
8
4
IDGATE
BAT
V
OUT
V
OUT
I
SENSE
Li-Ion
+
V
IN
I
LIM
GND V
C
HVOK
SW
BOOST
C5
10μF
0805
3