LTC3734 Datasheet, PDF (5/28 Pages) Linear Technology – Single-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs

LTC3734
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs SV_CC Voltage
and Mode
2500
ON
2000
1500
1000
500
0
4
SHUTDOWN
5
6
SV_CC VOLTAGE (V)
7
3734 G04
Maximum Current Sense Threshold
vs Duty Factor
75
50
25
0
0
20
40
60
80
100
DUTY FACTOR (%)
3734 G05
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
80
70
60
50
40
30
20
10
0
0
25
50
75
100
PERCENT OF NOMINAL OUTPUT VOLTAGE (%)
3734 G06
Maximum Current Sense Threshold
vs V_RUN/SS (Soft-Start)
80
V_SENSE(CM) = 1.25V
70
60
50
40
30
20
10
0
0
1
2
3
4
5
V_RUN/SS (V)
3734 G07
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
76
72
68
64
60
0
1
2
3
4
5
COMMON MODE VOLTAGE (V)
3734 G08
Current Sense Threshold
vs I_TH Voltage
90
80
70
60
50
40
30
20
10
0
–10
–20
–30
0
0.5
1
1.5
2
2.5
V_ITH (V)
3734 G09
Load Regulation (without AVP)
0.0
V_PSIB = 5V
V_IN = 15V
FIGURE 1
–0.1
SENSE Pins Total Source Current
100
50
–0.2
0
–0.3
–50
–0.4
0
5
10
15
20
25
LOAD CURRENT (A)
3734 G10
–100
0
2
4
6
V_SENSE COMMON MODE VOLTAGE (V)
3734 G12
3734f
5