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LTC3601_15 Datasheet, PDF (6/26 Pages) Linear Technology – 1.5A, 15V Monolithic Synchronous Step-Down Regulator
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LTC3601
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, VIN = 12V, fO = 1MHz, L = 2.2μH unless otherwise noted.
Output Voltage vs Time
Burst Mode Operation
SW
5V/DIV
VOUT
20mV/DIV
AC COUPLED
IL
1A/DIV
VIN = 12V
VOUT = 1.8V
ILOAD = 100mA
2μs/DIV
Output Voltage vs Time
Forced Continuous Mode
SW
5V/DIV
3601 G12
VOUT
20mV/DIV
AC COUPLED
IL
1A/DIV
VIN = 12V
VOUT = 1.8V
ILOAD = 100mA
2μs/DIV
3601 G13
Output Tracking
VOUT
TRACK
VFB
VIN = 12V
VOUT = 1.8V
RLOAD = 36Ω
2ms/DIV
3601 G14
Start-Up from Shutdown
Burst Mode Operation
RUN
2V/DIV
PGOOD
5V/DIV
VOUT
2V/DIV
IL
1A/DIV
VIN = 12V
VOUT = 1.8V
ILOAD = 20mA
200μs/DIV
Start-Up from Shutdown
Forced Continuous Mode
Load Step
Burst Mode Operation
RUN
2V/DIV
VOUT
1V/DIV
IL
1A/DIV
3601 G15
VIN = 12V
VOUT = 1.8V
ILOAD = 1.5A
200μs/DIV
VOUT
100mV/DIV
AC COUPLED
IL
1A/DIV
ILOAD
1A/DIV
3601 G16
VIN = 12V
10μs/DIV
VOUT = 1.8V
ILOAD = 150mA TO 1.5A
3601 G17
Load Step
Forced Continuous Mode
Short-Circuit Waveforms
Forced Continuous Mode
Start-Up Into Pre-Biased Output
(1V Pre-Bias) Burst Mode
Operation
VOUT
100mV/DIV
AC COUPLED
IL
1A/DIV
ILOAD
1A/DIV
VIN = 12V
10μs/DIV
VOUT = 1.8V
ILOAD = 150mA TO 1.5A
PGOOD
2V/DIV
VOUT
1V/DIV
IL
2A/DIV
3601 G18
VIN = 12V
VOUT = 1.8V
100μs/DIV
3601 G19
RUN
10V/DIV
PGOOD
5V/DIV
VOUT
1V/DIV
IL
1A/DIV
VIN = 12V
VOUT = 1.8V
ILOAD = 5mA
1ms/DIV
3601 G20
3601fb
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