Datasheet

LTC3127
6
3127f
Load Transient Response in
Burst Mode Operation, No Load
to 1A, in Input Current Limit
Start-Up Waveform
Typical perForMance characTerisTics
(T
J
= 25°C, unless otherwise noted )
Load Transient Response in
Burst Mode Operation, No Load
to 1A, Not in Input Current Limit
Transition from Burst Mode
Operation to Fixed Frequency Mode
200µs/DIV
V
OUT
50mV/DIV
MODE
5V/DIV
I
IN
1A/DIV
I
LOAD
1A/DIV
3127 G17
V
IN
= 3.6V
R
PROG
= 90k
R3 = 499k
V
OUT
= 3.3V
C
OUT
= 4.4mF
C1 = 100pF
100µs/DIV
V
OUT
20mV/DIV
MODE
5V/DIV
I
IN
200mA/DIV
3127 G18
V
IN
= 3.6V
R
PROG
= 32.4k
R3 = 499k
V
OUT
= 3.3V
C
OUT
= 4.4mF
C1 = 100pF
5ms/DIV
V
OUT
1V/DIV
SHDN
5V/DIV
I
IN
500mA/DIV
3127 G20
V
IN
= 3.6V
R
PROG
= 32.4k
R3 = 499k
V
OUT
= 3.3V
C
OUT
= 4.4mF
C1 = 100pF
200µs/DIV
V
OUT
100mV/DIV
MODE
5V/DIV
I
IN
500mA/DIV
I
LOAD
1A/DIV
3127 G19
V
IN
= 3.6V
R
PROG
= 32.4k
R3 = 499k
V
OUT
= 3.3V
C
OUT
= 4.4mF
C1 = 100pF