LT3791-1 Просмотр технического описания (PDF) - Linear Technology
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LT3791-1 Datasheet PDF : 26 Pages
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LT3791-1
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
V(BST1-SW1), V(BST2-SW2) UVLO
vs Temperature
3.9
3.8
RISING
3.7
3.6
3.5
3.4
FALLING
3.3
3.2
3.1
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37911 G28
PWMOUT On-Resistance
vs Temperature
14
12
10
PULL-UP
8
6
PULL-DOWN
4
2
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37911 G31
V(SNSP-SNSN) Buck Threshold
vs Temperature
60
VC(MIN)
40
20
0
–20
–40
VC(MAX)
–60
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37911 G34
BG1, BG2 Driver On-Resistance
vs Temperature
4.5
4.0
3.5
PULL-UP
3.0
2.5
2.0
1.5
PULL-DOWN
1.0
0.5
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37911 G29
VC Voltage vs Duty Cycle
1.6
V(SNSP-SNSN) = 0V
1.4
BG2
1.2
1.0
BG1
0.8
0.6
0.4
0.2
0
0
20
40
60
80 100
DUTY CYCLE (%)
37911 G32
V(SNSP-SNSN) Boost Threshold
vs VC
60
40
20
0
–20
–40
–60
–80
0.6 0.8
1.0 1.2 1.4
VC (V)
1.6 1.8
37911 G35
TG1, TG2 Driver On-Resistance
vs Temperature
4.0
3.5
3.0
PULL-UP
2.5
2.0
PULL-DOWN
1.5
1.0
0.5
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37911 G30
V(SNSP-SNSN) Buck Threshold
vs VC
60
40
20
0
–20
–40
–60
0.6 0.8 1.0 1.2 1.4
VC (V)
1.6 1.8
37911 G33
V(SNSP-SNSN) Boost Threshold
vs Temperature
60
40
VC(MAX)
20
0
–20
–40
–60
VC(MIN)
–80
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
37911 G36
37911fa
8
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