LTC4007_1 Datasheet, PDF (8/24 Pages) Linear Technology – 4A, High Efficiency, Standalone Li-Ion Battery Charger

LTC4007
BLOCK DIAGRA
0.1µF
V_IN
DCIN
1
INFET
5.8V
Q3
23
ACP 3
SHDN 24
FAULT 5
FLAG 17
GND
6
3C4C 7
CHEM 16
CLN
MUX
TIMER/CONTROLLER
OSCILLATOR
2 CHG
4 ^RT
R_RT
RESTART
TBAD
THERMISTOR
NTC ^32.4k
9
0.47µF
10k
NTC
397mV
C/10
35mV
11.67µA
BAT
3k
15
–
LOBAT 8
708mV
1.19V
5k
R_CL 15nF
CLP
18
–
100mV
CL1
CLN
19
+
g_m = 1.4m^Ω
1.105V +
+
EA
–
g_m = 1m^Ω
I_CL 13
DCIN
20µF
OSCILLATOR
WATCHDOG
DETECT t_OFF
1.28V
CLN
+
OV
–
TGATE
Q1
20
S
Q
R
R_SENSE
20µF
CA1
CSP ^3k
14
g_m = 1m^Ω
CA2
9k
1.19V
BUFFERED ITH
÷5
ITH
10
6K
0.12µF
–+
I_CMP
BGATE
Q2
22
PGND
21
L1
PWM CHARGE
LOGIC
I_REV
17mV
PROG
11
0.0047µF
R_PROG
26.7k
4007 BD
4007fa
8