Datasheet

LTC4089-3
10
40893f
For more information www.linear.com/4089-3
+
SOFT-START
0.25V
SOFT-START2
+
+
+
+
TOO COLD
NTC
CURRENT LIMIT
TOO HOT
0.1V
NTC ENABLE
V
NTC
NTC
10k
100k
100k
+
HPWR
CLPROG
IN
PROG
CHG
1V
500mA/100mA
2µA
+
+
CURRENT CONTROL
OSCILLATOR
CHARGE CONTROL
CONTROL LOGIC
VOLTAGE DETECT
COUNTER
OSCILLATOR
TA
DIE
TEMP 105°C
I
LIM
2.8V
BATTERY
UVLO
3.85V
RECHARGE
UVLO
IN OUT BAT
I
CHG
BAT UV
RECHRG
HOLD
RESET
NTCERR
CLK
EOC
C/10
+
+
2µA
GND
1, 2
SUSP
2k
3.6V
IN
DRIVER
HVOUT
OUT
GATE
BATBAT
HVPR
TIMER
CHRG
STOP
40893 BD
1V
CL
I
LIM
CNTL
ENABLE
+
EDA
D1
C3
L1
I
IN
1000
C4
R3
10pF
HVEN
HVIN
V
C
CC/CV REGULATOR
CHARGER
ENABLE
+
+
4.25V (RISING)
3.15V (FALLING)
+
1.8V
R
S
Q
C1
ENABLE
+
+
350mV 75mV (RISING)
25mV (FALLING)
GM
BOOST
Q1
D2
SW
25mV
25mV
IDEAL
DIODE
Q
DRIVER
+
+
+
+
21
4
22
12
14
15
9
6
5
16
8
17
11
10
13
7
3
19
20
BLOCK DIAGRAM