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LB1876 Arkusz danych(PDF) 7 Page - Sanyo Semicon Device |
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LB1876 Arkusz danych(HTML) 7 Page - Sanyo Semicon Device |
7 / 14 page No. 6201-7/14 LB1876 Pin Descriptions Pin No. Symbol Description Equivalent circuit Motor drive output. Connect Schottky diodes between the outputs and VCC. 2 1 36 OUT1 OUT2 OUT3 1 2 36 300 Ω VM1 34 28 VCC 29 VM2 VREG 300 Ω 5 300 Ω 8 6 4 9 7 VREG 300 Ω 11 300 Ω 10 Continued on next page. Output block ground 34 GND3 Output block power supply and output current detection Connect low-resistance resistors Rf between these pins and VCC. The output current is limited to the current value set by IOUT = VREF/Rf. 28 29 VM1 VM2 Since these are not connected internally, they can be used for wiring. 3 35 NC NC Hall device inputs These inputs return a high level when IN+ > IN- and a low level when IN– > IN+. A Hall signal amplitude of at least 100 mV p-p (differential) is desirable. Insert a capacitor between IN+ and IN- if noise on the Hall signal is a problem. 8 9 6 7 4 5 IN1+ IN1– IN2+ IN2– IN3+ IN3– FG inputs If noise on the FG signal is a problem, insert either a capacitor or a filter consisting of a capacitor and a resistor. 10 11 FGIN1+ FGIN1– Control circuit block ground 12 GND1 Sub-ground 13 GND2 |
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