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BA6825FS Arkusz danych(PDF) 4 Page - Rohm |
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BA6825FS Arkusz danych(HTML) 4 Page - Rohm |
4 / 6 page 583 Motor driver ICs BA6825FS / BA6826FS (3) Output waveforms are shown in Fig. 5. Because of the amplifier offset, the output is left OPEN when the out- put signal switches from positive to negative. The output waveform is determined by the external circuit because the IC impedance increases during this transition period. Since inductive loads are usually provided, a capacitor should be connected to suppress the backlash voltage. FOperation notes (1) ECI input The ECI input circuit has 2VF and a 500 Ω resistor con- nected in series. Current is limited only by the 500 Ω re- sistor. (2) Hall input Signals of 50mV (peak to peak) or greater should be ap- plied to the Hall device input. The DC input range is be- tween 2V and (Vreg *1.5V). There will be no problem if the input is centered around Vreg / 2. Because the Hall input impedance is 1M Ω or grater, any type of Hall device can be connected. No current flows when the transistor is off because the Hall input pins ( ) and *) are differential. Because the ICs are linear drivers, any DC offset in the Hall device will be amplified and appear in the output. Use Hall devices having a minimum offset. Hall devices can be connected in either series or parallel. (3) Thermal shutdown circuit The circuit puts the driver outputs (9, 11, 12, and 14 pin) to the open state at the temperature of 175 _C (typical). There is a temperature difference of about 20 _C between the temperatures at which the circuit is activated and deactivated. |
Podobny numer części - BA6825FS |
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Podobny opis - BA6825FS |
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