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LB1971V 데이터시트(PDF) 8 Page - Sanyo Semicon Device |
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LB1971V 데이터시트(HTML) 8 Page - Sanyo Semicon Device |
8 / 9 page No. 6214-8/9 LB1971V Pin No. Symbol Pin voltage Function Equivalent circuit 9 FC Continued on next page. 10 DET • Drive waveform sink side envelope detection Nothing connected to this pin in normal operation. 11 12 CSLP1 CSLP2 VCC1 1 k Ω 11 12 • Connection for the capacitor used for triangular wave generation The soft switching operation of the coil output waveform is created using this triangular waveform. 14 15 16 22 CX NC • Unused • Clock oscillator used by the sensorless logic Connect a capacitor between the CX pin and ground. Oscillator frequency must be set up to 60 kHz. Continued from preceding page. • Frequency characteristics determination Closed loop oscillation of the current control system can be stopped by connecting a capacitor between this pin and ground. 1 k Ω VCC1 14 13 GND •Ground VCC1 1 k Ω 10 23 1 2 30 k Ω 1 k Ω 1 k Ω 1 k Ω VCC1 9 2 k Ω |
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