参数资料
型号: LTC4081EDD#TRPBF
厂商: Linear Technology
文件页数: 7/24页
文件大小: 0K
描述: IC USB POWER MANAGER 10-DFN
标准包装: 2,500
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: 3.75 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
供应商设备封装: 10-DFN(3x3)
包装: 带卷 (TR)
LTC4081
TYPICAL PERFORMANCE CHARACTERISTICS
speci?ed)
No-Load Buck Input Current
(T A = 25°C, V CC = 5V, V BAT = 3.8V, unless otherwise
(Burst Mode Operation)
vs Temperature
Buck Main Switch (PMOS)
On-Resistance vs Battery Voltage
Buck Main Switch (PMOS)
On-Resistance vs Temperature
35
30
25
20
L = 10 μ H
C = 4.7 μ F
V OUT = 1.8V
V BAT = 4.2V
V BAT = 3.8V
V BAT = 2.7V
1.2
1.0
0.8
0.6
1.2
1.0
0.8
0.6
15
10
5
0.4
0.2
0.4
0.2
0
–50 –30
–10
10
30
50
70
90
0
2.5
3.0
3.5
4.0
4.5
5.0
0
–50 –30
–10
10
30
50
70
90
TEMPERATURE (?C)
4081 G18
BATTERY VOLTAGE (V)
4081 G19
TEMPERATURE ( ° C)
4081 G20
1.2
1.0
0.8
0.6
0.4
0.2
Buck Synchronous Switch (NMOS)
On-Resistance vs Battery Voltage
1.2
1.0
0.8
0.6
0.4
0.2
Buck Synchronous Switch (NMOS)
On-Resistance vs Temperature
0
2.5
3.0
3.5
4.0
4.5
5.0
0
–50 –30
–10
10
30
50
70
90
BATTERY VOLTAGE (V)
4081 G21
Maximum Output Current
(PWM Mode) vs Battery Voltage
TEMPERATURE ( ° C)
4081 G22
Maximum Output Current (Burst
Mode Operation) vs Battery Voltage
500
400
L = 10 μ H
V OUT SET FOR 1.8V
80
70
60
L = 10 μ H
V OUT SET FOR 1.8V
50
300
200
40
30
20
10
100
2.7
3
3.3
3.6
3.9
4.2
4.5
0
2.7
3
3.3
3.6
3.9
4.2
4.5
BATTERY VOLTAGE (V)
4081 G23
BATTERY VOLTAGE (V)
4081 G24
4081f
7
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