Datasheet

LTC3129-1
8
31291fa
For more information www.linear.com/LTC3129-1
Typical perForMance characTerisTics
T
A
= 25°C, unless otherwise noted.
Step Load Transient Response in
Burst Mode Operation
PGOOD Response to a Drop
On V
OUT
MPPC Response to a Step Load
L = 10µH
V
IN
= 7V
V
OUT
= 5V
C
OUT
= 22µF
I
OUT
= 5mA to 125mA STEP
31291 G28
500µs/DIV
I
VOUT
100mA/DIV
V
OUT
100mV/DIV
V
OUT
= 5V
31291 G29
1ms/DIV
PGOOD
2V/DIV
V
OUT
2V/DIV
V
IN
= 5V
OC
V
MPPC
SET TO 3.5V
C
IN
= 22µF, R
IN
= 10Ω,
V
OUT
= 5V, C
OUT
= 22µF
I
OUT
= 25mA to 125mA STEP
31291 G30
2ms/DIV
I
VOUT
100mA/DIV
V
OUT
2V/DIV
V
IN
2V/DIV
Fixed Frequency Ripple on V
OUT
Burst Mode Waveforms
Burst Mode Ripple on V
OUT
Start-Up Waveforms
Step Load Transient Response in
Fixed Frequency
L = 10µH
V
IN
= 7V
V
OUT
= 5V
I
OUT
= 200mA
C
OUT
= 10µF
31291 G23
200ns/DIV
I
L
200mA/DIV
V
OUT
20mV/DIV
V
IN
= 7V
V
OUT
= 5V
I
OUT
= 50mA
C
OUT
= 22µA
31291 G26
1ms/DIV
I
VIN
200mA/DIV
V
OUT
5V/DIV
V
CC
5V/DIV
RUN
5V/DIV
L = 10µH
V
IN
= 7V
V
OUT
= 5V
C
OUT
= 10µF
I
OUT
= 50mA to 150mA STEP
31291 G27
500µs/DIV
I
VOUT
100mA/DIV
V
OUT
100mV/DIV
L = 10µH
V
IN
= 7V
V
OUT
= 5V
I
OUT
= 5mA
C
OUT
= 22µF
31291 G24
50µs/DIV
I
L
200mA/DIV
SW2
5V/DIV
SW1
5V/DIV
L = 10µH
V
IN
= 7V
V
OUT
= 5V
I
OUT
= 5mA
C
OUT
= 22µF
31291 G25
100µs/DIV
I
L
100mA/DIV
V
OUT
100mV/DIV