LTC3615 LINER [Linear Technology], LTC3615 Datasheet - Page 6

• Manufacturer Part Number: LTC3615
• Description: Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter
• Manufacturer: LINER [Linear Technology]

200mA/DIV
LTC3615
Typical perForMance characTerisTics
200mV/DIV
100mV/DIV

20mV/DIV
1A/DIV
1A/DIV
V
V
V
OUT
OUT
OUT
I
I
I
L
L
L
Forced Continuous Mode
Operation (FCM)
Load Step Transient in
FCM External Compensation
V
I
V
V
I
V
COMPENSATION FIGURE 1
Load Step Transient in FCM
with AVP Mode
V
I
V
V
OUTPUT CAPACITOR VALUE FIGURE 1
OUT
LOAD
LOAD
OUT
MODE
OUT
MODE
OUT
MODE
ITH
= 100mA
= 3.3V
= 1.8V
= 1.8V
= 1.8V
= 100mA TO 3A
= 100mA TO 3A
= 1.5V
= 1.5V
= 1.5V
50µs/DIV
50µs/DIV
1µs/DIV
3615 G09
3615 G12
3615 G15
200mV/DIV
200mV/DIV
500mA/DIV
2A/DIV 0A
20mV/DIV
1A/DIV
I
V
V
V
L
OUT
OUT
OUT
I
I
L
L
Pulse-Skipping Mode Operation
Load Step Transient
in Pulse-Skipping Mode
V
I
V
COMPENSATION FIGURE 1
Load Step Transient in Forced
Continuous Mode Sourcing and
Sinking Current
V
I
V
COMPENSATION FIGURE 1
V
I
V
LOAD
OUT
LOAD
OUT
MODE
OUT
MODE
OUT
MODE
= 75mA
= 1.8V
= 1.8V
= 1.8V
= 100mA TO 3A
= –1.5A TO 3A
= 3.3V
= 3.3V
= 1.5V
50µs/DIV
20µs/DIV
50µs/DIV
V
IN
3615 G10
3615 G13
3615 G16
= 3.3V, R
500mA/DIV
500mV/DIV
200mV/DIV
20mV/DIV
PGOOD
T
1V/DIV
1A/DIV
2V/DIV
1A/DIV
/SYNC = SV
V
V
V
RUN
OUT
OUT
OUT
I
I
I
L
L
L
Load Step Transient in
Burst Mode Operation
Internal Start-Up in Forced
Continuous Mode
Burst Mode Operation
V
I
V
V
I
V
V
I
V
COMPENSATION FIGURE 1
OUT
LOAD
OUT
OUT
MODE
OUT
MODE
OUT
MODE
= 75mA
= 3A
= 1.8V
= 1.8V
= 1.8V
= 100mA TO 3A
= 0V
= 1.5V
= 0V
IN
, unless otherwise noted.
500µs/DIV
20µs/DIV
50µs/DIV
3615 G11
3615 G17
3615 G14
3615f