Datasheet

LTC4008
20
4008fb
APPLICATIONS INFORMATION
BATMON
V
FB
I
CL
SHDN
FAULT
FLAG
NTC
R
T
I
TH
GND
I
CL
FAULT
FLAG
DCIN
CLP
CLN
TGATE
BGATE
PGND
CSP
BAT
PROG
LTC4008-1
R10 32.4k 1%
R8
140k
0.25%
C6
0.12μF
THERMISTOR
10k
NTC
Q3
2N7002
C7
0.47μF
R12
100k
R11
100k
V
LOGIC
DCIN
0V TO 28V
R7
6.04k
1%
R9
15k
0.25%
R13
1.5k
Z1
R
T
150k
C1
0.1μF
C4
15nF
Q1
Q2 D1
C2
20μF
SYSTEM
LOAD
L1
10μH
R1
4.99k
1%
R4 3.01k 1%
R5 3.01k 1%
R
SENSE
0.025Ω
1%
R
CL
0.02Ω
1%
C3
20μF
Q4
D2
C5
0.0047μF
4008 F10
Q5
2N7002
R6
28.7k
1%
CHARGE
R26
150k
Li-Ion
BATTERY
D1: MBRS130T3
D2: SBM540
Q1: Si4431BDY
Q2: FDC645N
Q4: Si7423DN
Z1 VALUE SIZED FOR ABSOLUTE MAXIMUM ADAPTER VOLTAGE
Figure 10. Typical LTC4008-1 Application (12.3V/4A)