LTC4080X 查看數據表（PDF） - Linear Technology
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LTC4080X
Linear Technology
LTC4080X Datasheet PDF : 20 Pages
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LTC4080X
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, VCC = 5V, VBAT = 3.8V, unless otherwise
specified)
No-Load Buck Input Current
(Burst Mode Operation)
Buck Main Switch (PMOS)
Buck Main Switch (PMOS)
vs Temperature
On-Resistance vs Battery Voltage
On-Resistance vs Temperature
35
1.2
1.2
L = 10µH
VBAT = 4.2V
30
C = 4.7µF
VOUT = 1.8V
1.0
1.0
25
VBAT = 3.8V
0.8
0.8
20
VBAT = 2.7V
0.6
0.6
15
10
0.4
0.4
5
0.2
0.2
0
–50 –30
–10 10 30 50
TEMPERATURE (˚C)
70 90
4080X G18
0
2.5
3.0
3.5
4.0
4.5
5.0
BATTERY VOLTAGE (V)
4080X G19
0
–50 –30
–10 10 30 50
TEMPERATURE (°C)
70 90
4080X G20
Buck Synchronous Switch (NMOS)
On-Resistance vs Battery Voltage
1.2
Buck Synchronous Switch (NMOS)
On-Resistance vs Temperature
1.2
1.0
1.0
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0
2.5
3.0
3.5 4.0
4.5
BATTERY VOLTAGE (V)
5.0
4080X G21
0.2
0
–50 –30
–10 10 30 50
TEMPERATURE (°C)
70 90
4080X G22
Maximum Output Current
(PWM Mode) vs Battery Voltage
500
L = 10µH
VOUT SET FOR 1.8V
400
300
200
100
2.7
3 3.3 3.6 3.9 4.2 4.5
BATTERY VOLTAGE (V)
4080X G23
Maximum Output Current (Burst
Mode Operation) vs Battery Voltage
80
L = 10µH
70
60
VOUT SET FOR 1.8V
50
40
30
20
10
0
2.7 3 3.3 3.6 3.9 4.2 4.5
BATTERY VOLTAGE (V)
4080X G24
4080Xf
7
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