LTC3615 LINER [Linear Technology], LTC3615 Datasheet - Page 8

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

LTC3615
Typical perForMance characTerisTics

1V/DIV
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–40
Switch Leakage vs Temperature
Slew Rate of Falling Edge at
SW1/2 vs SRLIM Resistor
V
V
I
V
OUT
–25
IN
OUT
IN
= 3.3V
= 5.5V
= 1A
= 1.8V
100k
–10
5
SYNCHRONOUS SWITCH
TEMPERATURE (°C)
OPEN
500mV/DIV
V
20
TRACK/SS
PGOOD
1V/DIV
2V/DIV
V
2ns/DIV
35
SGND OR SV
OUT1
SRLIM =
50
40.2k
Tracking Up/Down in
Forced Continuous Mode,
SRLIM Pin Tied to 0V
V
I
V
V
V
OUT
OUT
TRACK/SS
MODE
SRLIM
65
MAIN SWITCH
= 3A
= 0V TO 1.8V
80
IN
= 1.5V
= 0V
95
= 0V TO 0.7V
110 125
3615 G28
3615 G25
2ms/DIV
1V/DIV
100
180
160
140
120
80
60
40
20
0
2.25
Slew Rate of Rising Edge at
SW1/2 vs SRLIM Resistor
No Load Supply Current
vs Input Voltage
V
V
I
MODE = 0V
RUNx = ITHx = SV
OUT
IN
OUT
= 3.3V
3615 G31
2.75
= 1A
= 1.8V
3.25
40.2k
IN
2ns/DIV
3.75
V
SGND OR SV
IN
SRLIM =
(V)
4.25
500mV/DIV
200mV/DIV
OPEN
V
TRACK/SS
PGOOD
2V/DIV
V
IN
100k
OUT1
4.75
Tracking Up/Down in
Forced Continuous Mode,
SRLIM Pin Tied to SV
V
I
V
V
V
OUT
OUT
TRACK/SS
MODE
SRLIM
V
5.25
3615 G29
3615 G26
IN
= 3A
= 0V TO 1.2V
= 3.3V, R
= 1.5V
= 3.3V
= 0V TO 0.4V
500mA/DIV
20mV/DIV
2V/DIV
V
T
100
180
160
140
120
2ms/DIV
OUT
SW
/SYNC = SV
80
60
40
20
I
0
L
–40
No Load Supply Current
vs Temperature
Sinking Current
V
I
V
OUT
MODE = 0V
RUNx = ITHx = SV
OUT
MODE
–25
= –1A
IN
= 1.2V
–10
= 1.5V
IN
5
TEMPERATURE (°C)
, unless otherwise noted.
20
3615 G32
IN
1µs/DIV
35
50
65
80
95
110 125
3615 G30
3615 G27
3615f