LTC3541-2(RevA) Просмотр технического описания (PDF) - Linear Technology
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LTC3541-2 Datasheet PDF : 20 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LTC3541-2
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)
6
35412 G09
VLDO/Linear Regulator Reference
vs Temperature
0.410
VIN = 3.6V
0.408
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)
35412 G19
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)
35412 G20
RDS(0N) vs Temperature
0.700
Buck (Burst) and VLDO Output
Buck (Pulse Skip) Load Step from
1mA to 500mA
0.600
0.500
0.400
SYNCH SWITCH
0.300
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)
35412 G10
VIN = 3.6V
2µs/DIV
LVOUT = 1.5V
VOUT = 1.875V
ILOAD = 50mA
Burst Mode OPERATION
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
35412 G21
VIN = 3.6V
40µs/DIV
VOUT = 1.875V
ILOAD = 1mA TO 500mA
35412 G11
Buck (Burst) Load Step from
1mA to 500mA
VLDO Load Step from 1mA to
300mA
VLDO Load Step from 100mA to
300mA
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
40µs/DIV
VOUT = 1.875V
ILOAD = 1mA TO 500mA
LVOUT
20mV/DIV
AC COUPLED
ILOAD
250mA/DIV
35412 G12
VIN = 3.6V
200µs/DIV
VOUT = 1.5V
ILOAD = 1mA TO 300mA
LVOUT
20mV/DIV
AC COUPLED
ILOAD
250mA/DIV
35412 G13
VIN = 3.6V
200µs/DIV
LVOUT = 1.5V
ILOAD = 100mA TO 300mA
35412 G14
35412fb
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