Datasheet

LTC4089/LTC4089-5
10
40895fc
–
+
SOFT-START
0.25V
SOFT-START2
–
+
–
+
–
+
–
+
15
TOO COLD
NTC
CURRENT LIMIT
TOO HOT
0.1V
NTC ENABLE
V
NTC
14
NTC
10k
100k
100k
–
+
13
HPWR
22
CLPROG
IN
23
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
4.1V
RECHARGE
UVLO
IN OUT BAT
I
CHG
BAT UV
RECHRG
HOLD
RESET
NTCERR
CLK
EOC
C/10
–
+
–
+
11
2μA
16
GND SUSP
2k
V
SET
IN
DRIVER
HVOUT
OUT
GATE
BATBAT
HVPR
21
TIMER
18
CHRG
STOP
4089 TA01
1V
CL
I
LIM
CNTL
ENABLE
–
+
EDA
19
D1
C3
L1
I
IN
1000
10
C4
R3
10pF
HVEN
HVIN
V
C
10
CC/CV REGULATOR
CHARGER
ENABLE
–
+
–
+
4.25V (RISING)
3.15V (FALLING)
–
+
21
21
21
1.8V
R
S
Q
10
C1
ENABLE
10
–
+
+
350mV
(LTC4089)
75mV (RISING)
25mV (FALLING)
GM
BOOST
Q1
D2
SW
25mV
25mV
IDEAL
DIODE
Q
DRIVER
+
–
+
–
+
–
+
–
PART NUMBER
LTC4089
LTC4089-5
V
SET
3.6V
5V
BLOCK DIAGRAM