Datasheet

LTC3458L
6
3458lfa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
FF Mode 100-300mA Load StepSync Operation at 1.33MHz
Burst Mode Operation 10mA to
50mA Load Step
Auto Mode 10mA to 100mA Load
Step
10mA to 200mA Load Step
Showing UV Trip
Forced BURST to FF Mode
Switch with 50mA Load
BURST
1V/DIV
V
OUT
200mV/DIV
LOAD
I
L
200mA/DIV
500μs/DIV
100mA
10mA
V
OUT
200mV/DIV
V
OUT
200mV/DIV
I
L
200mA/DIV
I
L
500mA/DIV
200μs/DIV 200μs/DIV
FIXED
FREQUENCY
BURST
–4%
SW
5V/DIV
SYNC
2V/DIV
I
L
200mA/DIV
500ns/DIV
COMP
500mV/DIV
BURST
500mV/DIV
V
OUT
200mV/DIV
V
OUT
200mV/DIV
LOAD
I
L
200mA/DIV
I
L
0.5A/DIV
200μs/DIV
200μs/DIV
50mA
10mA
V
IN
= 3.3V
V
OUT
= 5V
R
T
= 200k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
OUT
= 22μF
R
ILIM
= 110k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
BURST
= 0.015μF
R
BURST
= 133k
R
ILIM
= 110k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
BURST
= 0.015μF
R
BURST
= 133k
R
ILIM
= 110k
V
IN
= 3.3V
V
OUT
= 5V
R
Z
= 33K
CC1 = 270pF
CC2 = 10pF
C
OUT
= 22μF
0mA
0mA
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
R
Z
= 33k
CC1 = 270pF
CC2 = 10pF
C
OUT
= 22μF
R
ILIM
= 110k
L = 10μH
F = 1MHz
3458L G20 3458L G21
3458L G22 3458L G23
3458L G24 3458L G25
(T
A
= 25°C unless otherwise specified)