LTC3729L-6 Datasheet, PDF (6/28 Pages) Linear Technology – PolyPhase, Synchronous Step-Down Switching Regulator

LTC3729L-6
TYPICAL PERFOR A CE CHARACTERISTICS
Load Regulation
0.0
–0.1
–0.2
–0.3
V_IN = 15V
FIGURE 1
T_A = 25°C
V_ITH vs V_RUN/SS
2.5
V_OSENSE = 0.7V
T_A = 25°C
2.0
1.5
1.0
0.5
SENSE Pins Total Source Current
100
T_A = 25°C
50
0
–50
–0.4
0
10
20
30
40
50
LOAD CURRENT (A)
3729L-6 G13
Maximum Current Sense
Threshold vs Temperature
80
0
01
78
76
74
72
70
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3729L-6 G17
2
3
4
V_RUN/SS (V)
56
3729L-6 G14
–100
0
2
4
6
V_SENSE COMMON MODE VOLTAGE (V)
3729L-6 G15
RUN/SS Current vs Temperature
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3729L-6 G19
Soft-Start Up (Figure 12)
V_ITH
1V/DIV
V_OUT
2V/DIV
V_RUNSS
2V/DIV
100ms/DIV
1629 G20
Load Step (Figure 12)
I_OUT
O/30A
V_ITH
1V/DIV
V_OUT
200mV/DIV
10µs/DIV
1629 G21
6
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