LTC3458 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC3458 Datasheet PDF : 16 Pages
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LTC3458
TYPICAL PERFOR A CE CHARACTERISTICS
Sync Operation at 1.33MHz
FF Mode 100-300mA Load Step
SW
5V/DIV
SYNC
2V/DIV
IL
200mA/DIV
0mA
VIN = 3.3V
VOUT = 7V
ROSC = 200k
500ns/DIV
Burst Mode Operation 10mA to
50mA Load Step
VOUT
200mV/DIV
BURST
500mV/DIV
LOAD
50mA
10mA
VOUT
200mV/DIV
COMP
500mV/DIV
IL
0.5A/DIV
0mA
VIN = 3.3V
VOUT = 5V
RZ = 33K
CC1 = 270pF
CC2 = 10pF
COUT = 22μF
200μs/DIV
L = 10μH
F = 1MHz
Auto Mode 10mA to 100mA Load
Step
VOUT
200mV/DIV
BURST
1V/DIV
LOAD
100mA
10mA
IL
200mA/DIV
IL
200mA/DIV
VIN = 3.3V
VOUT = 5V
L = 10μH
COUT = 22μF
200μs/DIV
10mA to 200mA Load Step
Showing UV Trip
VIN = 3.3V
500μs/DIV
VOUT = 5V
L = 10μH
CBURST = 0.015μF
RBURST = 133k
Forced BURST to FF Mode
Switch with 50mA Load
VOUT
200mV/DIV
IL
200mA/DIV
6
– 4%
200μs/DIV
VIN = 3.3V
VOUT = 5V
L = 10μH
CBURST = 0.015μF
RBURST = 133k
VOUT
200mV/DIV
FIXED
FREQUENCY
BURST
IL
500mA/DIV
200μs/DIV
VIN = 3.3V
VOUT = 5V
L = 10μH
RZ = 33k
CC1 = 270pF
CC2 = 10pF
COUT = 22μF
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