Linear Technology LTC3558, Руководство пользователя

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LTC3558
7
3558f
Timer Accuracy vs Temperature
Buck and Buck-Boost Regulator
Switching Frequency vs Temperature
TEMPERATURE (°C)
–55
–2
PERCENT ERROR (%)
–1
1
2
3
25
7
3558 G16
0
–15 –35 45 65 5 85
4
5
6
V
CC
= 5V
TIME (HOUR)
0
I
BAT
(mA)
BAT (V)
CHRG (V)
5.0
200
0
400
800
600
1000
3 5
3558 G17
3.5
3.0
5.0
4.5
4.0
3.0
4.0
1.0
2.0
0
1 2 4 6
V
CC
= 5V
R
PROG
= 0.845k
HPWR = 5V
Recharge Threshold
vs Temperature Battery Charger FET
On-Resistance vs Temperature SUSP/HPWR Pin Rising
Thresholds vs Temperature
CHRG
Pin Output Low Voltage
vs Temperature Timer Accuracy vs Supply Voltage
TEMPERATURE (°C)
–55
75
V
RECHARGE
(mV)
79
87
91
95
115
103
–15 25 45
3558 G10
83
107
111
99
–35 5 65 85
V
CC
= 5V
TEMPERATURE (°C)
–55
R
DS(ON)
(mΩ)
500
550
600
85
3558 G11
450
400
300
–35 –15 5 25 45 65
350
700
650
V
CC
= 4V
I
BAT
= 200mA
EN1 = EN2 = 0V
TEMPERATURE (°C)
–55
THRESHOLD (V)
1.1
5
3558 G12
0.8
0.6
–35 –15 25
0.5
0.4
1.2
1.0
0.9
0.7
45 65 85
V
CC
= 5V
TEMPERATURE (°C)
–55
80
100
140
5 45
3558 G13
60
40
–35 –15 25 65 85
20
0
120
VOLTAGE (mV)
V
CC
= 5V
I
CHRG
= 5mA
CHRG
Pin I-V Curve
CHRG (V)
0
70
60
50
40
30
20
10
0
3 5
3558 G14
1 2 4 6
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
3558 G15
5.3 5.5
1.5
TYPICAL PERFORMANCE CHARACTERISTICS
Complete Charge Cycle
2400mAh Battery
TEMPERATURE (°C)
–55
1.725
FREQUENCY (MHz)
1.825
2.025
2.125
2.225
2.425
–15
25
45 125
3558 G18
1.925
2.325
–35 5
65
85 105
BAT = 4.2V
BAT = 2.7V
BAT = 3.6V
V
CC
= 0V, MODE = 0
BAT = PV
IN1
= PV
IN2
T
A
= 25°C, unless otherwise noted.