LT3652EMSE Ver la hoja de datos (PDF) - Linear Technology
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LT3652EMSE Datasheet PDF : 26 Pages
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LT3652
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Maximum Charge Current
(VSENSE–VBAT) vs Temperature
101.0
VFB = 3V
100.8
100.6
100.4
100.2
100.0
99.8
99.6
99.4
99.2
99.0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3652 G07
Thermal Foldback – Maximum
Charge Current (VSENSE–VBAT)
vs Temperature
120
100
80
60
40
20
0
25 35 45 55 65 75 85 95 105 115 125 135
TEMPERATURE (°C)
3652 G08
CC/CV Charging; BAT Pin Bias
Current vs VBAT
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
–0.2
VBAT(FLT)
–0.4
0 0.5 1 1.5 2 2.5 3
VBAT (V)
3652 G09
Maximum Charge Current
(VSENSE–VBAT) vs VIN_REG Voltage
100
VFLOAT Programming Resistor
Current vs VFLOAT for 2-Resistor
Network
12
80
10
8
60
6
40
4
20
2
6
0
2.65 2.66 2.67 2.68 2.69 2.7 2.71 2.72 2.73 2.74 2.75
VIN_REG (V)
3652 G10
Charge Current, Efficiency, and
Power Loss vs Time
(ICHG(MAX) = 2A; VFLOAT = 8.2V)
3.0
95
VIN = 20V
2.5
EFFICIENCY
85
POWER
2.0
LOSS
75
CHARGE
CURRENT
1.5
65
1.0
55
0.5
45
0
35
0 20 40 60 80 100 120 140 160 180 200
TIME (MINUTES)
3652 G12
0
0 2 4 6 8 10 12 14 16
VBAT(FLT) (V)
3652 G11
Charger Efficiency vs Battery
Voltage (ICHG = 2A)
90
88
86
84
82
80
78
76
74
72
VIN = 20V WITH INPUT BLOCKING DIODE
70
3 4 5 6 7 8 9 10 11 12 13 14 15
VBAT (V)
3652 G13
3652fb
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