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| LTC3541-1 Datasheet, PDF (6/20 Pages) Linear Technology – High Efficiency Buck + VLDO Regulator | |||
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LTC3541-1
TYPICAL PERFOR A CE CHARACTERISTICS
Buck (Pulse Skip) Load Step from
1mA to 500mA
Buck (Burst) Load Step from
1mA to 500mA
VLDO Load Step from
1mA to 300mA
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
VIN = 3.6V
40µs/DIV
VOUT = 1.8V
ILOAD = 1mA TO 500mA
VLDO Load Step from
100mA to 300mA
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
ILOAD
500mA/DIV
35411 G16
VIN = 3.6V
40µs/DIV
VOUT = 1.8V
ILOAD = 1mA TO 500mA
LVOUT
20mV/DIV
AC COUPLED
ILOAD
250mA/DIV
35411 G17
VIN = 3.6V
400µs/DIV
LVOUT = 1.5V
ILOAD = 1mA TO 300mA
35411 G18
Linear Regulator to VLDO
Transition, Load = 1mA
Linear Regulator to VLDO
Transition, Load = 30mA
LVOUT
20mV/DIV
AC COUPLED
ILOAD
250mA/DIV
VIN = 3.6V
400µs/DIV
LVOUT = 1.5V
ILOAD = 100mA TO 300mA
LVOUT
10mV/DIV
AC COUPLED
ILOAD
50mA/DIV
35411 G19
VIN = 3.6V
LVOUT = 1.5V
ILOAD = 1mA
40µs/DIV
VLDO to Linear Regulator
Transition, Load = 1mA
LVOUT
10mV/DIV
AC COUPLED
VOUT
10mV/DIV
AC COUPLED
35411 G20
VIN = 3.6V
2µs/DIV
LVOUT = 1.5V
VOUT = 1.875V
ILOAD = 50mA
Burst Mode OPERATION
VLDO to Linear Regulator
Transition, Load = 30mA
35412 G21
LVOUT
10mV/DIV
AC COUPLED
ILOAD
50mA/DIV
VIN = 3.6V
LVOUT = 1.5V
ILOAD = 1mA
40µs/DIV
35411 G22
LVOUT
10mV/DIV
AC COUPLED
ILOAD
50mA/DIV
VIN = 3.6V
LVOUT = 1.5V
ILOAD = 30mA
40µs/DIV
35411 G23
35411fa
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