Datasheet

LTC3608
7
3608fc
TEMPERATURE (°C)
–50 –25
0
EXTV
CC
SWITCH RESISTANCE (Ω)
4
10
0 50 75
3608 G24
2
8
6
25 100 125
TEMPERATURE (°C)
–50
FCB PIN CURRENT (µA)
–0.50
–0.25
0
25 75
3608 G25
–0.75
–1.00
–25 0 50 100 125
–1.25
–1.50
TEMPERATURE (°C)
–50 –25
–2
RUN/SS PIN CURRENT (µA)
0
3
0 50 75
3608 G26
–1
2
1
25 100 125
PULL-UP CURRENT
PULL-DOWN CURRENT
INPUT VOLTAGE (V)
0
INPUT CURRENT (µA)
SHUTDOWN CURRENT (µA)
800
1000
1400
1200
15
3608 G21
600
400
5 10 20
200
0
30
25
15
5
40
35
20
10
0
EXTV
CC
OPEN
EXTV
CC
= 5V
SHUTDOWN
INTV
CC
LOAD CURRENT (mA)
0
ΔINTV
CC
(%)
0.10
0.20
0.30
40
3608 G22
0
–0.20
–0.10
–0.40
–0.30
10 20 30
50
typical perForMance characteristics
Input and Shutdown Currents
vs Input Voltage
INTV
CC
Load Regulation
EXTV
CC
Switch Resistance
vs Temperature
FCB
Pin Current vs Temperature
RUN/SS Pin Current
vs
Temperature
RUN/SS Pin Current
vs Temperature
Undervoltage Lockout Threshold
vs Temperature
TEMPERATURE (°C)
–50
3.0
RUN/SS PIN CURRENT (µA)
3.5
4.0
4.5
5.0
–25 0 25 50
3608 G27
75 100 125
LATCHOFF ENABLE
LATCHOFF THRESHOLD
TEMPERATURE (°C)
–50
2.0
UNDERVOLTAGE LOCKOUT THRESHOLD (V)
2.5
3.0
3.5
4.0
–25 0 25 50
3608 G28
75 100 125
I
EXTVCC
vs Frequency
FREQUENCY (kHz)
400
I
EXTVCC
(mA)
20
18
16
14
10
12
3608 G23
0
2
4
6
8
500 600 700 800
1000900
V
IN
= 20V