LTC3601 Linear Technology, LTC3601 Datasheet - Page 6

• Manufacturer Part Number: LTC3601
• Description: 15V Monolithic Synchronous Step-Down Regulator
• Manufacturer: Linear Technology

www.DataSheet4U.com
LTC3601
PGOOD
T
6
TYPICAL PERFORMANCE CHARACTERISTICS
AC COUPLED
2V/DIV
5V/DIV
2V/DIV
1A/DIV
AC COUPLED
A
V
RUN
OUT
= 25°C, V
20mV/DIV
I
L
100mV
1A/DIV
1A/DIV
5V/DIV
1A/DIV
I
Start-Up from Shutdown
Burst Mode Operation
V
LOAD
V
V
I
V
LOAD
OUT
IN
OUT
OUT
SW
I
I
L
= 12V
L
= 1.8V
Load Step
Forced Continuous Mode
V
V
I
= 20mA
Output Voltage vs Time
Burst Mode Operation
V
V
I
LOAD
LOAD
IN
OUT
IN
IN
OUT
= 12V
= 12V
= 12V, f
= 1.8V
= 150mA TO 1.5A
= 1.8V
= 100mA
200μs/DIV
O
= 1MHz, L = 2.2μH unless otherwise noted.
10μs/DIV
2μs/DIV
3601 G15
3601 G18
3601 G12
2V/DIV
1V/DIV
1A/DIV
V
RUN
OUT
I
AC COUPLED
PGOOD
L
2V/DIV
1V/DIV
2A/DIV
V
Start-Up from Shutdown
Forced Continuous Mode
V
V
I
20mV/DIV
LOAD
OUT
IN
OUT
I
5V/DIV
1A/DIV
L
= 12V
V
= 1.8V
Short-Circuit Waveforms
Forced Continuous Mode
= 1.5A
V
V
OUT
SW
IN
OUT
I
L
= 12V
Output Voltage vs Time
Forced Continuous Mode
V
V
I
= 1.8V
LOAD
IN
OUT
= 12V
= 1.8V
= 100mA
200μs/DIV
100μs/DIV
2μs/DIV
3601 G16
3601 G19
3601 G13
AC COUPLED
10V/DIV
PGOOD
100mV
1A/DIV
1A/DIV
5V/DIV
1V/DIV
1A/DIV
I
V
V
LOAD
RUN
OUT
OUT
I
I
L
L
Output Tracking
V
V
R
Load Step
Burst Mode Operation
V
V
I
Start-Up Into Pre-Biased Output
(1V Pre-Bias) Burst Mode
Operation
V
V
I
IN
OUT
LOAD
LOAD
LOAD
IN
OUT
IN
OUT
= 12V
= 12V
= 12V
= 1.8V
= 1.8V
= 1.8V
= 150mA TO 1.5A
= 5mA
= 36Ω
TRACK
V
V
OUT
FB
2ms/DIV
10μs/DIV
1ms/DIV
3601 G14
3601 G17
3601 G20
3601f