Datasheet

LTC3604
6
3604f
TYPICAL PERFORMANCE CHARACTERISTICS
Start-Up from Shutdown
Burst Mode Operation
Start-Up from Shutdown
Forced Continuous Mode
Start-Up Into Pre-Biased Output
(1V Pre-Bias) Burst Mode
Operation
Load Step
Burst Mode Operation
Load Step
Forced Continuous Mode
T
A
= 25°C, V
IN
= 12V, f
O
= 1MHz, L = 1.5μH unless otherwise noted.
Short-Circuit Waveforms
Forced Continuous Mode
Output Ripple Voltage
Burst Mode Operation
Output Ripple Voltage
Forced Continuous Mode Output Tracking
2µs/DIV
SW
5V/DIV
I
L
1A/DIV
V
OUT
20mV/DIV
AC-COUPLED
3604 G15
V
IN
= 12V
V
OUT
= 1.8V
I
LOAD
= 180mA
2µs/DIV
SW
5V/DIV
I
L
1A/DIV
V
OUT
20mV/DIV
AC-COUPLED
3604 G16
V
IN
= 12V
V
OUT
= 1.8V
I
LOAD
= 180mA
2ms/DIV
1V/DIV
0.5V/DIV
3604 G17
V
IN
= 12V
V
OUT
= 1.8V
R
LOAD
= 36
V
OUT
V
FB
TRACK
200µs/DIV
RUN
2V/DIV
PGOOD
5V/DIV
I
L
2A/DIV
V
OUT
1V/DIV
3604 G18
V
IN
= 12V
V
OUT
= 1.8V
I
LOAD
= 2.5A
200µs/DIV
RUN
2V/DIV
PGOOD
5V/DIV
I
L
2A/DIV
V
OUT
1V/DIV
3604 G19
V
IN
= 12V
V
OUT
= 1.8V
I
LOAD
= 2.5A
1ms/DIV
RUN
2V/DIV
PGOOD
5V/DIV
I
L
1A/DIV
V
OUT
1V/DIV
3604 G20
V
IN
= 12V
V
OUT
= 1.8V
I
LOAD
= 20mA
10µs/DIV
I
LOAD
2A/DIV
I
L
2A/DIV
V
OUT
100mV/DIV
AC-COUPLED
3604 G21
V
IN
= 12V
V
OUT
= 1.8V
I
LOAD
= 250mA TO 2.5A
10µs/DIV
I
LOAD
2A/DIV
I
L
2A/DIV
V
OUT
100mV/DIV
AC-COUPLED
3604 G22
V
IN
= 12V
V
OUT
= 1.8V
I
LOAD
= 250mA TO 2.5A
100µs/DIV
I
L
2A/DIV
V
OUT
1V/DIV
PGOOD
2V/DIV
3604 G23
V
IN
= 12V
V
OUT
= 1.8V