Datasheet

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