Datasheet

LTC4009
LTC4009-1/LTC4009-2
10
4009fd
block DiagraM
(LTC4009-1/LTC4009-2)
–
–
–
+
–
+
19
EA
R1
TO
INTERNAL CIRCUITS
CC
V
FB
–
+
CA
1.2085V
REFERENCE
5V
REGULATOR
PWM
LOGIC
BOOST AND
OV DETECTION
C/10
DETECTION
OSCILLATOR
OUTPUT
VOLTAGE
SELECT
SHUTDOWN
CONTROL
TO
INTERNAL
CIRCUITS
SHUTDOWN
OVERVOLTAGE
CHARGE
INPUT
CURRENT
LIMIT
TGATE
20
BOOST
12
ITH
13
PROG
14
CSN
15
CSP
18
SW
21
GND
4009 BD02
16
BGATE
17
INTV
DD
TO
INTERNAL
CIRCIUTS
FVS1
10
FVS0
9
BAT
11
CHRG
8
DCDIV
5
ACP
7
SHDN
6
ICL
4
CLN
1
CLP
2
DCIN
3