Datasheet

LTC3618
7
3618fc
For more information www.linear.com/LTC3618
Typical perForMance characTerisTics
Switch Leakage Current
vs Temperature
No Load Supply Current
vs Input Voltage
No Load Supply Current
vs Temperature
Sinking Current Tracking Up/Down
Internal Start-Up V
DDQ
Internal Start-Up V
TT
T
A
= 25°C, V
IN
= 3.3V, f = 1MHz, Figure 3 Circuit,
unless otherwise noted.
TEMPERATURE (°C)
–40
SWITCH LEAKAGE (µA)
0.8
1.8
2.0
–10
20
50
0.4
1.4
0.6
1.6
0.2
0
1.2
1.0
–25
5
80
35
65
110 12595
3618 G19
SYNCHRONOUS SWITCH
MAIN SWITCH
V
IN
= 5.5V
INPUT VOLTAGE (V)
2.25
1.0
SUPPLY CURRENT (mA)
4.5
2.0
2.5
5.0
3.5
3.25 5.25
3618 G20
1.5
4.0
3.0
2.75
4.253.75
4.75
TEMPERATURE (°C)
1.0
SUPPLY CURRENT (mA)
1.5
2.0
2.5
5.0
4.0
4.5
3.5
3618 G21
3.0
–45 55
–20
5
80
30
105
PGOOD
2V/DIV
I
L
1A/DIV
RUN
5V/DIV
V
TT
500mV/DIV
3618 G25
V
TT
= 0.9V
NO LOAD
400µs/DIV
I
L1
1A/DIV
I
L2
1A/DIV
SW1
SW2
3618 G22
V
DDQ
= 1.8V
V
TT
= 0.9V
I
LOAD1
, I
LOAD2
= –3A
400ns/DIV
PGOOD
5V/DIV
TRACK/SS
500mV/DIV
V
DDQ
500mV
3618 G23
2ms/DIV
FORCED CONTINUOUS MODE
V
DDQ
= 0V to 0.6V
I
LOAD
= 1A
PGOOD
2V/DIV
I
L
1A/DIV
RUN
5V/DIV
V
DDQ
1V/DIV
3618 G24
V
DDQ
= 1.8V
NO LOAD
1ms/DIV