LT3795 Просмотр технического описания (PDF) - Linear Technology
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LT3795 Datasheet PDF : 30 Pages
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LT3795
Electrical Characteristics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Do not apply a positive or negative voltage source to TG and GATE
pins, otherwise permanent damage may occur.
Note 3: Operating maximum for INTVCC is 8V.
Note 4: The LT3795E is guaranteed to meet specified performance from
0°C to 125°C. Specifications over the –40°C to 125°C operating junction
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3795I is guaranteed to meet
performance specifications over the –40°C to 125°C operating junction
temperature range. The LT3795H is guaranteed over the full –40°C to
150°C operating junction temperature range. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C.
Note 5: See Duty Cycle Considerations in the Applications Information
section.
Typical Performance Characteristics TA = 25°C, unless otherwise noted.
V(ISP-ISN) Threshold vs VCTRL
300
250
200
150
100
50
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
VCTRL (V)
3795 G01
V(ISP-ISN) Threshold at CTRL1 = 0.6V,
CTRL2 = 1.2V vs Temperature
128
127
126
125
124
123
122
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3795 G03a
V(ISP-ISN) Threshold vs VISP
253
252
251
250
249
248
247
0
20 40 60 80 100 120
VISP (V)
3795 G02
V(ISP-ISN) Threshold vs FB Voltage
300
250
200
150
100
50
0
1.1
1.15
1.2
1.25
1.3
VFB (V)
3795 G04
V(ISP-ISN) Full-Scale Threshold
vs Temperature
254
ISP = 48V
253
CTRL1= CTRL2 = 2V
252
251
250
249
248
247
246
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3795 G03
VFB vs Temperature
1.27
1.26
1.25
1.24
1.23
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3795 G05
For more information www.linear.com/LT3795
3795fb
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