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| LTC3543_15 Datasheet, PDF (6/20 Pages) Linear Technology – 600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum | |||
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LTC3543
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Load Step
VOUT
AC COUPLED
100mV/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
20μs/DIV
VIN = 3.6V
VOUT = 1.5V
ILOAD = 3mA TO 200mA
VMODE = 0V
3543 G22
Load Step
VOUT
AC COUPLED
200mV/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
20μs/DIV
VIN = 3.6V
VOUT = 1.5V
ILOAD = 3mA TO 200mA
VMODE = 3.6V
3543 G23
Load Step
VOUT
AC COUPLED
100mV/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
10μs/DIV
VIN = 3.6V
VOUT = 1.5V
ILOAD = 100mA TO 600mA
VMODE = 3.6V
3543 G24
Spread Spectrum Load Step
VOUT
AC COUPLED
100mV/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
10μs/DIV
VIN = 3.6V
VOUT = 1.5V
ILOAD = 100mA TO 200mA
VMODE = 0.6V
3543 G25
PLL Operation
VC1
200mV/DIV
C1 = 4μF
100μs/DIV
3MHz TO 1MHz STEP
3543 G26
PLL Operation at 3MHz
VMODE
2V/DIV
SW
2V/DIV
100ns/DIV
3543 G27
3543fa
6
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