Datasheet

LTC4098-3.6
6
409836f
Battery Charge Current
vs Temperature
Normalized Battery Charger Float
Voltage vs Temperature
V
OUT
Voltage vs V
OUT
Current
in Suspend
V
BUS
Current vs V
OUT
Current
in Suspend (Includes OVP)
Automatic Battery Charge Current
vs Output Voltage
OUTPUT CURRENT (mA)
0
OUTPUT VOLTAGE (V)
3.45
3.60
3.90
3.75
2.0
409836 G14
3.30
3.15
3.00
0.5
1.0
1.5
2.5
SUSPEND HIGH
SUSPEND LOW
V
BUS
= 5V
BAT = 3.3V
R
CLPROG
= 3.01k
OUTPUT CURRENT (mA)
0
V
BUS
CURRENT (mA)
1.5
2.0
2.5
2.0
409836 G15
1.0
0.5
0
0.5
1.0
1.5
2.5
SUSPEND HIGH
SUSPEND LOW
V
BUS
= 5V
BAT = 3.3V
R
CLPROG
= 3.01k
TEMPERATURE (°C)
–40
0
CHARGE CURRENT (mA)
100
200
300
400
0 40
80
120
409836 G17
500
600
–20 20
60
100
THERMAL REGULATION
R
PROG
= 2k
TEMPERATURE (°C)
–40
NORMALIZED FLOAT VOLTAGE
60
409836 G18
0.997
–15
10
35
85
1.003
1.002
1.001
1.000
0.999
0.998
OUTPUT VOLTAGE (V)
0
% PROGRAMMED CHARGE CURRENT
20
40
60
80
100
120
3.1 3.2 3.3 3.4
409836 G16
3.5
Battery Charging Efficiency vs
Battery Voltage with No External
Load (P
BAT
/P
VBUS
)
V
BUS
Current vs V
BUS
Voltage
(Suspend Mode—Includes OVP)
BATTERY VOLTAGE (V)
EFFICIENCY (%)
80
90
409836 G12
70
60
100
R
CLPROG
= 3.01k
R
PROG
= 1k
I
VOUT
= 0mA
1x CHARGING
EFFICIENCY
5x CHARGING
EFFICIENCY
2.7 3.0 3.3 3.6
V
BUS
VOLTAGE (V)
1
V
BUS
CURRENT (µA)
60
80
100
5
409836 G13
40
20
0
2
3
4
6
BAT = 3.3V
I
VOUT
= 0mA
T
A
= 25°C, unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
PowerPath Switching Regulator
Efficiency vs Output Current
Battery Drain Current
vs Battery Voltage
BATTERY VOLTAGE (V)
2.7
0
BATTERY CURRENT (µA)
5
10
15
20
25
30
3.0 3.3 3.6
409836 G10
V
BUS
= 0V
V
BUS
= 5V
(SUSPEND MODE)
I
VOUT
= 0µA
OUTPUT CURRENT (A)
0.01
40
EFFICIENCY (%)
50
60
70
80
100
0.1 1
409836 G11
90
5x, 10x MODE
1x MODE
BAT = 3.3V