参数资料
型号: LTC4001EUF#TRPBF
厂商: Linear Technology
文件页数: 4/20页
文件大小: 0K
描述: IC CHARGER LI-ION BUCK 16-QFN
标准包装: 2,500
功能: 充电管理
电池化学: 锂离子(Li-Ion)
电源电压: 4 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-WQFN 裸露焊盘
供应商设备封装: 16-QFN(4x4)
包装: 带卷 (TR)
LTC4001
TYPICAL PERFOR A CE CHARACTERISTICS (T A = 25 ° C unless otherwise noted)
Oscillator Frequency
Dissipation of Figure 8 Circuit
Oscillator Frequency vs V IN
vs Temperature
vs I BAT
1.00
0.75
0.50
V BAT = 3.2V
V SS = 1V
0.8
0.6
V IN = 5V
V BAT = 3.2V
V SS = 1V
1.25
1.00
V IN = 5V
V BAT = 4V
0.25
0
–0.25
–0.50
–0.75
0.4
0.2
0
0.75
0.50
0.25
–1.00
3
3.5
4
4.5
5
5.5
6
–0.2
–50 –30 –10 10 30 50 70 90 110 130 150
0
500
1000
1500
2000
V IN (V)
4001 G01
Dissipation of Figure 8 Circuit
vs V IN
TEMPERATURE ( ° C)
PROG Pin Characteristic
(V PROG vs I PROG )
4001 G02
I BAT (mA)
4001 G03
Output Charging Characteristic
Showing Constant Current and
Constant Voltage Operation
1.4
V BAT = 4V
I BAT = 2A
1.2
V IN = 5V
2.0
1.2
1.0
0.8
0.6
0.4
0.2
I BAT = 1.5A
I BAT = 1A
I BAT = 500mA
1.0
0.8
0.6
0.4
0.2
V BAT = 3.2V
V BAT = 3.5V
V BAT = 3.7V
V BAT = 4V
1.5
1.0
0.5
0
4.25
4.5
4.75
5
5.25
5.5
0
0
5
10
15
20
0
0
0.5
1
1.5
2
2.5
3
3.5
4
V IN (V)
4001 G04
I PROG (mA)
4001 G05
V BAT (V)
4001 G06
55
Trickle Charge Current vs V BAT
4.3
V FLOAT and Recharge Battery
Threshold Voltage vs Temperature
50
V IN = 5.5V
V IN = 5V
4.2
V FLOAT
45
V IN = 4V
V IN = 4.5V
4.1
V RECHARGE
(V BAT FALLING)
40
0
0.5
1
1.5
2
2.5
3
4.0
–50 –30 –10 10 30 50 70 90 110 130 150
V BAT (V)
4001 G07
TEMPERATURE ( ° C)
4001 G08
4001f
4
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