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L4976D Datasheet(PDF) 5 Page - STMicroelectronics |
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L4976D Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 11 page 0 5 10 15 20 25 30 35 40 45 50 Vcc(V) 1 2 3 4 5 Iq (mA) 200KHz R1=22K C2=1.2nF 0Hz D97IN724 Tamb=25 °C 0% DC 100KHz R1=20K C2=2.7nF Figure 1. Quiescent drain current vs. input voltage. 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 IO(A) 3.360 3.362 3.364 3.366 3.368 3.370 3.372 3.374 3.376 3.378 VO (V) Tj=25 °C Tj=125 °C VCC=35V D97IN734 Figure 4. Load regulation -50 -30 -10 10 30 50 70 90 110 Tj( °C) 1 2 3 4 5 Iq (mA) D97IN731 0Hz 200KHz R1=22K C2=1.2nF VCC=35V 0% DC 100KHz R1=20K C2=2.7nF Figure 2. Quiescent current vs. junction temperature 0 20 40 60 80 R1(K Ω) 5 10 20 50 100 200 500 fsw (KHz) D97IN784 0.82nF 1.2nF 2.2nF 3.3nF 4.7nF 5.6nF Tamb=25 °C Figure 5. Switching frquency vs. R1 and C2 0 5 10 15 20 25 30 35 40 45 50 VCC(V) 3.370 3.371 3.372 3.373 3.374 3.375 3.376 3.377 VO (V) D97IN733 Tj=25 °C Tj=125 °C Figure 3. Line Regulation 0 5 10 15 20 25 30 35 40 45 50 VCC(V) 90.0 92.5 95.0 97.5 100.0 102.5 105.0 107.5 fsw (KHz) D97IN735 Tj=25 °C Figure 6. Switching Frequency vs. input voltage. L4976 5/11 |
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