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L4971D013TR Datasheet(PDF) 8 Page - STMicroelectronics |
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L4971D013TR Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 13 page L4971 8/13 Figure 18. Efficiency vs. output current. Figure 19. Efficiency vs. output current. Figure 20. Efficiency vs. VCC. Figure 21. Power dissipation vs. Vcc. Figure 22. Efficiency vs. VO Figure 23. Pulse by pulse limiting current vs. junction temperature. 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 IO(A) 60 65 70 75 80 85 90 η (%) D97IN740 VCC=8V fsw=200KHz VO=5.1V VCC=12V VCC=24V VCC=48V 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 IO(A) 55 60 65 70 75 80 85 90 η (%) D97IN741 VCC=8V fsw=200KHz VO=3.36V VCC=12V VCC=24V VCC=48V 0 1020304050 VCC(V) 70 75 80 85 η (%) D97IN742 V 0=5.1V-f SW =100KHz IO=1.5A V 0 =5.1V-f SW =200KHz V 0 =3.36V-f SW=100KHz V 0 =3.36V-f SW =2 00KHz 0 1020304050 VCC(V) 0 200 400 600 800 Pdiss (mW) D97IN743 IO=1.5A VO=5.1V fsw=100KHz IO=1A IO=0.5A 0 5 10 15 20 25 30 V0(V) 0 200 400 600 800 Pdiss (mW) D97IN744 IO=1.5A VCC=35V fsw=100KHz IO=1A IO=0.5A -50 -25 0 25 50 75 100 125 Tj(˚C) 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Ilim (A) D97IN747 fsw=100KHz VCC=35V |
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