参数资料
型号: LTC4055EUF-1#TRPBF
厂商: Linear Technology
文件页数: 6/24页
文件大小: 0K
描述: IC USB PWR MNGR BATT CHRGR 16QFN
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: 4.35 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-WQFN 裸露焊盘
供应商设备封装: 16-QFN(4x4)
包装: 带卷 (TR)
LTC4055/LTC4055-1
TYPICAL PERFORMANCE CHARACTERISTICS
Regulated Output Voltage-
Recharge Threshold Voltage
vs Temperature
Battery Regulated Output (Float)
Voltage vs Supply Voltage
Battery Current and Voltage
vs Time (LTC4055)
120
115
V IN = 5V
4.3
T A = 25°C
600
500
CHRG
6
5
110
LTC4055
V BAT
105
100
4.2
400
300
4
3
95
4.1
LTC4055-1
200
2
90
85
100
0.8AHr CELL
V IN = 5V
T A = 25°C
R PROG = 105k
I BAT
1
80
–50
–25
0
25
50
75
100
4.0
4.5
4.75
5
5.25
5.5
5.75
6
0
0
0
20 40 60 80 100 120 140 160 180 200
TEMPERATURE (°C)
Charging from USB, I BAT
vs V BAT (LTC4055)
4055 G10
V IN (V)
4055 G11
Charging from USB, Low Power,
I BAT vs V BAT (LTC4055)
TIME (MINUTES)
4055 G12
Undervoltage Current Limit,
Charging from V IN , I BAT vs V IN
600
500
400
V IN = 5V
V OUT = NO LOAD
R PROG = 100k
R CLPROG = 100k
HPWR = 1
T A = 25°C
100
80
60
V IN = 5V
V OUT = NO LOAD
R PROG = 100k
R CLPROG = 100k
HPWR = 0
T A = 25°C
1.6
1.4
1.2
1.0
T A = 25°C
R PROG = 34k
R PROG = 50k
300
0.8
200
100
40
20
0.6
0.4
0.2
R PROG = 100k
R PROG = 100k
HPWR = 0
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
0
4.260
4.300
4.340
4.380
4.420
V BAT (V)
4055 G13
Charge Current vs Temperature
(Thermal Regulation)
V BAT (V)
Ideal Diode Forward Voltage
vs Current and Temperature
4055 G14
V IN (V)
4055 G15
Ideal Diode Forward Voltage and
Resistance vs Current
1.0
0.9
0.8
R PROG = 50k
1000
900
800
V BAT = 3.5V
V IN = 0V
25°C
0°C
–50°C
1000
900
800
V BAT = 3.5V
V IN = 0V
T A = 25°C
0.7
700
700
0.6
0.5
0.4
0.3
R PROG = 100k
600
500
400
300
125°C
75°C
600
500
400
300
R DIO(ON)
0.2
V IN = 5V
200
200
R FWD
0.1 V BAT = 3.5V
JA = 37°C/W
0
–50 –25 0
25
50
75
100
125
100
0
0
20 40 60 80 100 120 140 160 180 200
100
0
0
20 40 60 80 100 120 140 160 180 200
TEMPERATURE (°C)
4055 G16
V FWD (mV)
4055 G17
V FWD (mV)
4055 G18
4055fb
6
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