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L4972AD датащи(PDF) 8 Page - STMicroelectronics |
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L4972AD датащи(HTML) 8 Page - STMicroelectronics |
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8 / 22 page ![]() L4972A 8/22 Figure 8. TYPICAL PERFORMANCES (using evaluation board) : n = 83% (Vi = 35V ; Vo = VREF ; Io = 2A ; fsw = 100KHz) Vo RIPPLE = 30mV (at 1A) Line regulation = 12mV (Vi = 15 to 50V) Load regulation = 7mV (Io = 0.5 to 2A) for component values Refer to the fig. 8 (Part list). Figure 9. Component Layout of fig. 8. Evaluation Board Available (only for DIP version) V4R Rising Threshold Voltage V9 = V13 4.95 5.1 5.25 V 15 V4H Hysteresis 0.4 0.5 0.6 V 15 I4 Input Bias Current 1 3 µA15 Table 5. Electrical Characteristcs (continued) Refer to the test circuit, TJ = 25°C, Vi = 35V, R4 = 30KΩ, C9 = 2.7nF, fSW = 100KHz typ, unless otherwise specified. Symbol Parameter Test Condition Min. Typ. Max. Unit Fig. |
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