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LTC3547 Datasheet, PDF (5/16 Pages) Linear Technology – Dual Monolithic 300mA Synchronous Step-Down Regulator
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TYPICAL PERFOR A CE CHARACTERISTICS
LTC3547
Load Regulation
1.2
VOUT = 1.2V
1.O
VOUT = 1.8V
VOUT = 2.5V
0.8
0.6
Burst Mode
0.4
OPERATION
0.2
0
VIN = 3.6V
Line Regulation
0.6
VOUT = 1.8V
ILOAD = 100mA
0.4
0.2
0
–0.2
–0.4
–0.2
0 50 100 150 200 250 300 350
LOAD CURRENT (mA)
3547 G13
–0.6
2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3547 G14
Start-Up From Shutdown
Start-Up From Shutdown
Load Step
RUN
2V/DIV
VOUT
1V/DIV
IL
100mA/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 0A
250µs/DIV
RUN
2V/DIV
VOUT
1V/DIV
3547 G15
IL
200mA/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 300mA
200µs/DIV
VOUT, AC
COUPLED
100mV/DIV
3547 G16
IL
200mA/DIV
ILOAD
200mA/DIV
10µs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 0mA TO 300mA
3547 G17
Load Step
Load Step
VOUT, AC
COUPLED
100mV/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
10µs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 20mA TO 300mA
3547 G18
VOUT, AC
COUPLED
100mV/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
10µs/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 50mA TO 300mA
3547 G19
3547fa
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