Datasheet

LTC3734
6
3734fa
TYPICAL PERFORMANCE CHARACTERISTICS
Current Sense Pin Input Current
vs Temperature
Oscillator Frequency
vs Temperature
V
RUN/SS
Shutdown Latch
Thresholds vs Temperature
Maximum Current Sense
Threshold vs Temperature RUN/SS Current vs Temperature Load Step (Figure 9)
TEMPERATURE (°C)
–50 –25
V
SENSE
(mV)
0
50
75
3734 G13
78
76
74
72
70
68
25
100
125
TEMPERATURE (°C)
–50 –25
0
RUN/SS CURRENT (µA)
0.2
0.6
0.8
1.0
75 10050
1.8
3734 G14
0.4
0 25 125
1.2
1.4
1.6
1530 G15
V
OUT
100mV/DIV
I
OUT
4A/DIV
20µs/DIV
1.2V
1.116V
12A
2.5A
TEMPERATURE (°C)
–50 –25
–7
CURRENT SENSE INPUT CURRENT (µA)
–9
–12
0
50
75
3734 G16
–8
–11
–10
25
100
125
V
OUT
= 1.6V
TEMPERATURE (°C)
–50
700
600
500
400
300
200
100
25 75
3734 G17
–25 0
50 100 125
FREQUENCY (kHz)
V
FREQSET
= 2.4V
V
FREQSET
= 1.2V
V
FREQSET
= 0V
TEMPERATURE (°C)
–50 –25
0
SHUTDOWN LATCH THRESHOLDS (V)
0.5
1.5
2.0
2.5
75 10050
4.5
3734 G19
1.0
0 25 125
3.0
3.5
4.0
LATCH ARMING
LATCHOFF
THRESHOLD