LT3782EUFD Просмотр технического описания (PDF) - Linear Technology
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LT3782EUFD Datasheet PDF : 20 Pages
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LT3782
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.
VGBIAS vs IGBIAS
11.0
10.9
10.8
10.7
10.6
10.5
10.4
10.3
10.2
10.1
10.0
0
50
IGBIAS (mA)
100
3782 G01
Switching Frequency vs RFREQ
600
500
400
300
200
100
0
20 40 60 80 100 120 140 160 180 200
RFREQ (kΩ)
3782 G04
SGATE (Low) to BGATE (High)
Delay vs VDELAY (RSET = 80k)
1000
900
800
700
600
500
400
300
200
100
0
0
0.5 1.0 1.5 2.0 2.5
VDELAY (V)
3782 G07
ICC vs VCC
20
18
16
14
12
10
8
6
4
2
0
6 8 10 12 14 16 18 20 22 24 26 28 30
VCC (V)
3782 G02
ΔVREF vs VCC, ΔFrequency vs VCC
(RSET = 80k)
3
12
2
10
1
8
ΔVREF
0
6
–1
4
–2
2
ΔFrequency
–3
0
–4
–2
–5
–4
6 9 12 15 18 21 24 27 30
VCC (V)
3782 G03
Reference Voltage
vs Temperature
2.446
VGBIAS vs IGBIAS at Start-Up
(Charging 2μF)
14
800
2.444
2.442
12
VGBIAS
700
10
600
8
500
2.440
6
400
2.438
2.436
4
300
IGBIAS
2
200
0
100
2.434
0
–2
25 50 75 100 125 150
0
JUNCTION TEMPERATURE (°C)
3782 G05
250μ
500μ
TIME (s)
0
750μ
1m
3782 G06
Switching Frequency
vs Duty Cycle
105
100
95
90
85
80
100
200 300 400 500 600
SWITCHING FREQUENCY (kHz)
3782 G08
Maximum Duty Cycle Limit vs
VDCL (RSET = 80k)
120
110
100
90
80
70
60
50
40
0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4
VDCL (V)
3782 G09
3782fg
5
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