LTC3458L View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC3458L Datasheet PDF : 16 Pages
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LTC3458L
TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25°C unless otherwise specified)
Fixed Frequency (FF)
Discontinuous Current
Fixed Frequency (FF)
Continuous Current
SW
1V/DIV
IL
GND
100mA/DIV
0mA
VIN = 3.3V
VOUT = 5V
L = 7.4μH
500ns/DIV
3458L G14
Over-Current with 2A ILIMIT
IL
0.5A/DIV
SW
2V/DIV
VIN = 2.25V
VOUT = 5V
L = 7.4μH
RILIM = 84.5k
1μs/DIV
0mA
3458L G16
Burst Mode Operation Close-Up
SW
1V/DIV
IL
200mA/DIV
VIN = 3.3V
VOUT = 5V
L = 7.4μH
500ns/DIV
Burst Mode Operation
VOUT
100mV/DIV
SW
5V/DIV
0mA
3458L G15
IL
200mA/DIV
VIN = 3.3V
VOUT = 5V
L = 7.4μH
COUT = 22μF
CFF = 22pF
RILIM = 84.5k
50μs/DIV
Soft-Start into 20Ω Load
0mA
3458L G17
VOUT
100mV/DIV
SW
5V/DIV
0mA
IL
200mA/DIV
VIN = 3.3V
2μs/DIV
3458L G18
VOUT = 5V
L = 7.4μH
COUT = 22μF
CFF = 22pF*
RILIM = 84.5k
*CFF: FEED FORWARD CAPACITOR CONECTED BETWEEN VOUT AND FB.
VOUT
2V/DIV
VIN
2V/DIV
SS
200mV/DIV
IL
200mA/DIV
VIN = 3.3V
VOUT = 5V
L = 7.4μH
CSS = 0.1μF
2ms/DIV
3458L G19
3458lfa
5
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