LTC3458_15 Datasheet, PDF (5/16 Pages) Linear Technology – 1.4A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect

TYPICAL PERFOR A CE CHARACTERISTICS
Fixed Frequency (FF)
Discontinuous Current
Fixed Frequency (FF)
Continuous Current
LTC3458
SW
2V/DIV
I_L
100mA/DIV
0mA
V_IN = 3.3V
V_OUT = 7V
L = 10μH
200ns/DIV
Over-Current with 1.5A I_LIMIT
SW
2V/DIV
I_L
0.5A/DIV
0mA
V_IN = 3.3V
1μs/DIV
V_OUT = 7V
L = 10μH
R_ILIM = 133k
Burst Mode Operation Close-Up
V_OUT
100mV/DIV
SW
5V/DIV
I_L
200mA/DIV
0mA
V_IN = 3.3V
2μs/DIV
V_OUT = 7V
L = 10μH
C_OUT = 22μF
C_FF = 22pF
I_L
200mA/DIV
SW
2V/DIV
V_IN = 3.3V
V_OUT = 7V
L = 10μH
200ns/DIV
Burst Mode Operation
V_OUT
100mV/DIV
SW
5V/DIV
I_L
200mA/DIV
V_IN = 3.3V
V_OUT = 7V
L = 10μH
C_OUT = 22μF
C_FF = 22pF
50μs/DIV
Soft-Start into 50Ω Load
V_OUT
2V/DIV
V_IN
2V/DIV
SS
200mV/DIV
I_L
200mA/DIV
V_IN = 3.3V
V_OUT = 7V
L = 10μH
5ms/DIV
0mA
0mA
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