поискавой системы для электроныых деталей |
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LB11870 датащи(PDF) 8 Page - Sanyo Semicon Device |
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LB11870 датащи(HTML) 8 Page - Sanyo Semicon Device |
8 / 14 page No. 7256 -8/14 LB11870 Continued from preceding page. Pin No. Pin Function Equivalent circuit Sets the PWM oscillator frequency. Insert a capacitor between this pin and ground. The PWM oscillator frequency is set to about 34 kHz when a 680 pF capacitor is used. 17 PWM VREG 2k Ω 200 Ω 17 Frequency characteristics correction for the current control circuit. Insert a capacitor (about 0.01 to 0.1 µF) between this pin and ground. The output duty is determined by comparing the voltage on this pin to the PWM oscillator waveform. 19 FC VREG 300 Ω 19 Phase comparator output The phase error is converted to a pulse duty and output from this pin. 21 PD 21 VREG 300 Ω Error amplifier input 22 EI VREG 300 Ω 22 Error amplifier output 23 EO VREG 23 40k Ω Continued on next page. |
Аналогичный номер детали - LB11870 |
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Аналогичное описание - LB11870 |
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