LTC3734 Datasheet, PDF (6/28 Pages) Linear Technology – Single-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs

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