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LB11870 Datasheet(PDF) 8 Page - Sanyo Semicon Device |
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LB11870 Datasheet(HTML) 8 Page - Sanyo Semicon Device |
8 / 14 page LB11870 No.7256-8/14 Continued from preceding page. Pin No. Symbol Pin Description Equivalent Circuit 19 FC 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. 21 PD Phase comparator output. The phase error is converted to a pulse duty and output from this pin. 22 EI Error amplifier input. 23 EO Error amplifier output. 24 TOC Torque command voltage input. This pin is normally connected to the EO pin. When the TOC voltage falls, the lower output transistor on duty is increased. Continued on next page. VREG 300 Ω 19 21 VREG 300 Ω VREG 300 Ω 22 VREG 300 Ω 24 VREG 23 |
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