Datasheet

LTC3559/LTC3559-1
6
3559fb
TYPICAL PERFORMANCE CHARACTERISTICS
Timer Accuracy vs Temperature
Complete Charge Cycle
2400mAh Battery (LTC3559)
Buck Regulator Input Current vs
Temperature, Burst Mode Operation
Buck Regulator Input Current vs
Temperature, Pulse Skip Mode
(LTC3559)
Buck Regulator PV
IN
Undervoltage
Thresholds vs Temperature Frequency vs Temperature
TEMPERATURE (°C)
–55
–2
PERCENT ERROR (%)
–1
1
2
3
25
7
3559 G16
0
–15
–35
45 65
585
4
5
6
V
CC
= 5V
TIME (HOUR)
0
I
BAT
(mA)BAT (V)CHRG (V)
5.0
200
0
400
800
600
1000
35
3559 G17
3.5
3.0
5.0
4.5
4.0
3.0
4.0
1.0
2.0
0
12 4 6
V
CC
= 5V
R
PROG
= 0.845k
HPWR = 5V
TEMPERATURE (°C)
–55
20
INPUT CURRENT (μA)
25
35
40
45
–15
25
45 125
3559 G18
30
–35 5
65
85
105
50
V
FB
= 0.82V
PV
IN
= 4.2V
PV
IN
= 2.7V
TEMPERATURE (°C)
–55
100
INPUT CURRENT (μA)
150
250
300
350
–15
25
45 125
3559 G19
200
–35 5
65
85
105
400
V
FB
= 0.82V
PV
IN
= 4.2V
PV
IN
= 2.7V
TEMPERATURE (°C)
–55
2.25
PV
IN
(V)
2.35
2.55
2.65
2.75
–15
25
45 125
3559 G20
2.45
–35 5
65
85
105
2.85
RISING
FALLING
TEMPERATURE (°C)
–55
1.5
f
OSC
(MHz)
1.6
1.8
1.9
2.0
2.5
2.2
5
45
65
3559 G21
1.7
2.3
2.4
2.1
–35 –15 25
85
105
125
PV
IN
= 3.8V
CHRG Pin Output Low Voltage
vs Temperature
Timer Accuracy vs Supply Voltage
TEMPERATURE (°C)
–55
80
100
140
545
3559 G13
60
40
–35 –15
25 65 85
20
0
120
V
CHRG
(mV)
V
CC
= 5V
I
CHRG
= 5mA
CHRG Pin I-V Curve
CHRG (V)
0
70
60
50
40
30
20
10
0
35
3559 G14
12
46
I
CHRG
(mA)
V
CC
= 5V
BAT = 3.8V
V
CC
(V)
4.3
–1.0
PERCENT ERROR (%)
–0.5
0
0.5
1.0
2.0
4.5
4.7 4.9 5.1
3559 G15
5.3 5.5
1.5