LTC4009-2_15 Datasheet, PDF (10/28 Pages) Linear Technology – High Efficiency, Multi-Chemistry Battery Charger

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