LTC3604 Linear Technology, LTC3604 Datasheet - Page 6

• Manufacturer Part Number: LTC3604
• Description: 2.5A 15V Monolithic Synchronous Step-Down Regulator
• Manufacturer: Linear Technology

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