Datasheet
LTC4089-3
5
40893f
For more information www.linear.com/4089-3
TIME (MIN)
0
V
BAT
, V
OUT
, V
CHRG
(V)
I
BAT
(A)
2
3
200
40893 G03
1
0
50
100
150
5
4
0.6
0.9
0.3
0
1.5
1.2
V
BAT
V
OUT
V
CHRG
I
BAT
TERMINATION
C/10
1250mAh
HV
IN
= 12V
R
PROG
= 50k
TYPICAL PERFORMANCE CHARACTERISTICS
V
FLOAT
Load Regulation
Battery Regulation (Float)
Voltage vs Temperature
Battery Current and Voltage
vs Time
Charging from USB, I
BAT
vs V
BAT
Charge Current vs Temperature
(Thermal Regulation)
Ideal Diode Current vs Forward
Voltage and Temperature
(No External Device)
Ideal Diode Current vs Forward
Voltage and Temperature with
External Device
High Voltage Regulator Efficiency
vs Output Load
T
A
= 25°C, unless otherwise specified.
I
BAT
(mA)
0
3.75
V
FLOAT
(V)
3.80
3.85
3.90
3.95
4.00
4.05
200 400 600 800
40893 G01
1000
R
PROG
= 34k
TEMPERATURE (°C)
–50
V
FLOAT
(V)
3.945
3.950
3.955
25
75
40893 G02
3.940
3.935
3.930
–25 0 50
3.960
3.965
3.970
100
V
IN
= 5V
I
BAT
= 2mA
V
BAT
(V)
0
0
I
BAT
(mA)
100
300
400
500
1
2
2.5 4.5
40893 G04
200
0.5 1.5
3
3.5
4
600
V
IN
= 5V
V
OUT
= NO LOAD
R
PROG
= 100k
R
CLPROG
= 2k
HPWR = 5V
TEMPERATURE (°C)
–50
I
BAT
(mA)
400
500
600
25 75
40893 G05
300
200
–25 0
50 100 125
100
0
V
IN
= 5V
V
BAT
= 3.5V
θ
JA
= 50°C/W
V
FWD
(mV)
0
0
I
OUT
(mA)
100
300
400
500
1000
700
50
100
40893 G06
200
800
900
600
150
200
V
BAT
= 3.7V
V
IN
= 0V
–50°C
0°C
50°C
100°C
0
3000
4000
5000
80
40853 G07
2000
1000
2500
3500
4500
1500
500
0
20
40
60
100
V
FWD
(mV)
I
OUT
(mA)
V
BAT
= 3.7V
V
IN
= 0V
Si2333 PFET
–50°C
0°C
50°C
100°C
I
OUT
(A)
0
EFFICIENCY (%)
80
90
100
0.8
40893 G08
70
60
75
85
95
65
55
50
0.2
0.4
0.6
1.0
FIGURE 10 SCHEMATIC
V
BAT
= 4.21V (I
BAT
= 0)
HVIN = 8V
HVIN = 12V
HVIN = 24V
HVIN = 36V