LTC3541 データシートの表示（PDF） - Linear Technology
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LTC3541 Datasheet PDF : 22 Pages
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LTC3541
TYPICAL PERFORMANCE CHARACTERISTICS
Oscillator Frequency
vs Temperature
2.50
VIN = 3.6V
2.45
2.40
2.35
2.30
2.25
2.20
2.15
2.10
2.05
2.00
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3541 G10
Buck Reference vs Temperature
0.820
VIN = 3.6V
0.816
0.812
0.808
0.804
0.800
0.796
0.792
0.788
0.784
0.780
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
5341 G13
Buck (Pulse Skip) Load Step from
1mA to 500mA
Oscillator Frequency
vs Supply Voltage
2.5
VIN = 3.6V
2.4
2.3
2.2
2.1
2.0
3
4
5
SUPPLY VOLTAGE (V)
RDS(ON) vs Temperature
0.700
0.600
0.500
0.400
SYNCH SWITCH
0.300
6
3541 G11
VLDO/Linear Regulator Reference
vs Temperature
0.410
0.408 VIN = 3.6V
0.406
0.404
0.402
0.400
0.398
0.396
0.394
0.392
0.390
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
5341 G12
Buck (Burst) and VLDO Output
LVOUT
10mV/DIV
AC COUPLED
VOUT
10mV/DIV
AC COUPLED
0.200
0.100 MAIN SWITCH
0
–50 –25 0 25 50
VIN = 2.5V
VIN = 3.6V
VIN = 5.5V
75 100 125
TEMPERATURE (°C)
3541 G14
Buck (Burst) Load Step from
1mA to 500mA
VIN = 3.6V
2μs/DIV
LVOUT = 1.5V
VOUT = 1.8V
ILOAD = 50mA
Burst Mode OPERATION
VLDO Load Step from
1mA to 500mA
3541 G15
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
40μs/DIV
VOUT = 1.8V
ILOAD = 1mA TO 500mA
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
3541 G16
VIN = 3.6V
40μs/DIV
VOUT = 1.8V
ILOAD = 1mA TO 500mA
LVOUT
20mV/DIV
AC COUPLED
ILOAD
250mA/DIV
3541 G17
VIN = 3.6V
400μs/DIV
LVOUT = 1.5V
ILOAD = 1mA TO 300mA
3541 G18
3541fb
6
For more information www.linear.com/LTC3541
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