PQ1PF1 データシートの表示（PDF） - Sharp Electronics
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PQ1PF1 Datasheet PDF : 14 Pages
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Primary Regulators
Fig. 2 Power Dissipation vs. Ambient
Temperature
25
PD1 :No heat sink
PD2 :With infinite heat sink
20
PD2
,, 15
,, 10
5
,, PD1
0
,,, -20 0
50 80 100
150
Ambient temperature Ta (˚C)
Fig. 4 Operation Starting Voltage vs.
Junction Temperature
17.6
VCA=OPEN
17.5 VFB=OPEN, VDS=OPEN
17.4
17.3
17.2
17.1
17.0
16.9
16.8
-25
0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig. 6 Oscillation Frequency vs. Junction
Temperature
110
VCC=18V,VCA=OPEN
VFB=2.2V,VDS=10V,RL=56Ω
105
100
95
90
-25
0 25 50 75 100 125
Junction temperature Tj (˚C)
PQ1PF1
Fig. 3 Stand-by Current vs. Junction
Temperature
100
VCC=14V , VCA=OPEN
VFB=OPEN, VDS=OPEN
95
90
85
80
-25 0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig. 5 Output-Operating Mode Consumption
Current vs. Junction Temperature
12
VCC=18V,VCA=OPEN
VFB=2.2V,VDS=10V,RL=56Ω
11
10
9
8
7
-25 0 25 50 75 100 125
Junction temperature Tj (˚C)
Fig. 7 Maximum Duty vs. Junction
Temperature
47.0
46.5
VCC=18V,VCA=OPEN
VFB=2.2V,VDS=10V,RL=56Ω
46.0
45.5
45.0
44.5
44.0
43.5
43.0
42.5
42.0
-25 0 25 50 75 100 125
Junction temperature Tj (˚C)
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