LTC4007-1_15 Datasheet, PDF (8/24 Pages) Linear Technology – 4A, High Efficiency, Li-Ion Battery Charger

LTC4007-1
BLOCK DIAGRA
0.1µF
V_IN
DCIN
23
INFET
5.8V
Q3
21
CLN
ACP 1
SHDN 22
FAULT 3
FLAG 14
GND
4
3C4C 5
MUX
CHEM 13
LOBAT 6
921mV
1.19V
5k
R_CL 15nF
CLP
15
–
100mV
CL1
CLN
16
+
g_m = 1.4m^Ω
+
EA
–
g_m = 1m^Ω
I_CL 10
DCIN
20µF
OSCILLATOR
WATCHDOG
DETECT t_OFF
1.28V
CLN
+
OV
–
TGATE
Q1
17
S
Q
R
BGATE
Q2
20
PGND
18
PWM CHARGE
LOGIC
L1
TIMER/CONTROLLER
OSCILLATOR
24 CHG
2 ^RT
R_RT
TBAD
THERMISTOR
NTC ^32.4k
7
0.47µF
10k
NTC
397mV
C/10
35mV
11.67µA
CA1
BAT ^3.01k
12
R_SENSE
CSP ^3.01k
11
20µF
g_m = 1m^Ω
CA2
9k
1.19V
BUFFERED ITH
÷5
ITH
8
6K
0.12µF
–+
I_CMP
I_REV
17mV
PROG
9
0.0047µF
R_PROG
26.7k
40071 BD
40071f
8