Datasheet

LTC3708
6
3708fb
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Current Sense
Threshold vs V
RNG
Voltage
Maximum Current Sense
Threshold vs Temperature
Load Regulation
(Figure 13 Circuit)
Error Amplifi er g
m
vs Temperature
SENSE Pin Input Current
vs Temperature
RUN/SS Pin Current
vs Temperature
Feedback Voltage vs RUN/SS
(Soft-Start)
RUN/SS Latch-Off Thresholds
vs Temperature
Undervoltage Lockout Threshold
vs Temperature
V
RNG
VOLTAGE (V)
0.5
350
300
250
200
150
100
50
0
1.25 1.75
3708 G13
0.75 1
1.5 2
MAXIMUM CURRENT SENSE THRESHOLD (mV)
TEMPERATURE (°C)
–50
MAXIMUM CURRENT SENSE THRESHOLD (mV)
140
150
160
25 75 150
3708 G14
130
120
110
–25 0
50
100 125
V
RNG
= 1V
LOAD CURRENT (A)
0
–0.2
–0.1
0
12
3708 G15
–0.3
–0.4
369 15
–0.5
–0.6
–0.7
$V
OUT
(%)
FORCED
CONTINUOUS
MODE
DISCONTINUOUS
MODE
TEMPERATURE (°C)
–50
1.0
g
m
(mS)
1.1
1.2
1.3
1.4
050
100
150
3708 G16
1.5
1.6
–25 25
75
125
TEMPERATURE (°C)
–50
50
I
SENSE
(μA)
60
80
90
100
150
120
0
50
75
3708 G17
70
130
140
110
–25 25
100
125
150
I
SENSE
+
I
SENSE
–
TEMPERATURE (°C)
–50 –25
–2
RUN/SS PIN CURRENT (μA)
0
3
0
50
75
3708 G18
–1
2
1
25
100
125
PULL-UP CURRENT
PULL-DOWN CURRENT
RUN/SS VOLTAGE (V)
1
700
600
500
400
300
200
100
0
1.75 2.25
3708 G19
1.25 1.5
2 2.5
V
FB
(mV)
TEMPERATURE (°C)
–50
2.0
RUN/SS THRESHOLD (V)
2.5
3.0
3.5
4.0
–25 0 25 50
3708 G20
75 100 125 150
LATCHOFF ENABLE
LATCHOFF THRESHOLD
TEMPERATURE (°C)
–50
UNDERVOLTAGE LOCKOUT THRESHOLD (V)
3.5
4.0
4.5
25 75 150
3708 G21
3.0
2.5
2.0
–25 0
50
100 125