参数资料
型号: LTC4098EUDC#TRPBF
厂商: Linear Technology
文件页数: 6/32页
文件大小: 0K
描述: IC CHARGER USB COMP 20-UTQFN
标准包装: 2,500
系列: Bat-Track™, PowerPath™
功能: 电源管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.35 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-WFQFN 裸露焊盘
供应商设备封装: 20-QFN-EP(3x4)
包装: 带卷 (TR)
LTC4098/LTC4098-1
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C unless otherwise noted.
Battery Charging Efficiency vs
Battery Drain Current
vs Battery Voltage
PowerPath Switching Regulator
Efficiency vs Output Current
Battery Voltage with No External
Load (P BAT /P VBUS )
30
25
I VOUT = 0μ  A
V BUS = 0V
100
90
BAT = 3.8V
1x MODE
5x, 10x MODE
100
R CLPROG = 3.01k
R PROG = 1k
I VOUT = 0mA
90 LTC4098
5x CHARGING
EFFICIENCY
20
80
15
10
70
60
80
1x CHARGING
EFFICIENCY
5
V BUS = 5V
(SUSPEND MODE)
50
70
0
2.7
3.0
3.3 3.6 3.9
BATTERY VOLTAGE (V)
4.2
40
0.01
0.1
OUTPUT CURRENT (A)
1
60
2.7
3.0
3.3 3.6
BATTERY VOLTAGE (V)
3.9
4.2
V BUS Current vs V BUS Voltage
(Suspend)
40981 G10
V OUT Voltage vs V OUT Current
in Suspend
40981 G11
V BUS Current vs V OUT Current
in Suspend
40981 G12
50
40
30
20
BAT = 3.8V
I VOUT = 0mA
5.0
4.5
4.0
3.5
SUSPEND HIGH
SUSPEND LOW
2.5
2.0
1.5
1.0
V BUS = 5V
BAT = 3.3V
R CLPROG = 3.01k
SUSPEND HIGH
10
0
1
2
3
4
5
6
3.0
2.5
0
V BUS = 5V
BAT = 3.3V
R CLPROG = 3.01k
0.5
1
1.5
2
2.5
0.5
0
0
0.5
1
SUSPEND LOW
1.5
2
2.5
V BUS VOLTAGE (V)
Automatic Battery Charge
Current Reduction
40981 G13
OUTPUT CURRENT (mA)
Battery Charge Current
vs Temperature
40981 G14
OUTPUT CURRENT (mA)
40981 G15
Normalized Battery Charger Float
Voltage vs Temperature
120
100
80
600
500
400
R PROG = 2k
1.003
1.002
1.001
THERMAL REGULATION
60
40
20
300
200
100
1.000
0.999
0.998
0
3.2
3.3
3.4
3.5
3.6
0
–40 –20
0
20
40
60
80
100 120
0.997
–40
–15
10
35
60
85
V OUT (V)
40981 G16
TEMPERATURE (°C)
40981 G17
TEMPERATURE (°C)
40981 G18
40981fc
6
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