LTC3773 Datasheet, PDF (7/32 Pages) Linear Technology – Triple Output Synchronous 3-Phase DC/DC Controller with Up/Down Tracking

TYPICAL PERFORMANCE CHARACTERISTICS
LTC3773
V_FB vs Temperature
606.0
1.00
604.5
0.75
603.0
0.50
601.5
0.25
600.0
0
598.5
597.0
–0.25
–0.50
595.5
–0.75
594.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
–1.00
100 125
3773 G12
Maximum Current Limit
Threshold vs Temperature
84
12
V_SENSE – = 5V
81
8
V_SENSE – = 2.5V
78
4
75
0
72
–4
V_SENSE – = 0.6V
69
–8
66
–50 –25
0 25 50 75
TEMPERATURE (°C)
–12
100 125
3773 G14
Maximum Current Limit
Threshold vs SENSE Common
Mode Voltage
90
V_CC = 5V
87 V_FB = 0.58V
84
81
78
75
72
69
66
63
60
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
V_SENSE COMMON MODE VOLTAGE (V)
3773 G16
Error Amplifier gm
vs Temperature
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3773 G13
Maximum Current Limit
Threshold vs V_ITH
80
V_FB = 0.58V
60
40
20
0
–20
–40
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7
V_ITH (V)
3773 G15
Maximum Current Limit
Threshold vs Duty Factor
80
70
60
50
40
30
20
10
0
0 10 20 30 40 50 60 70 80 90 100
DUTY FACTOR (%)
3773 G17
3773fb
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