BA6871BS Rohm, BA6871BS Datasheet
BA6871BS
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BA6871BS Summary of contents
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... BA6871BS The BA6871BS is a 3-phase, full-wave, pseudo-linear motor driver suited for VCR capstan motors. The IC has a torque ripple cancellation circuit to reduce wow and flutter, and an output transistor saturation prevention circuit that provides superb motor control over a wide range of current. The built-in motor power series regulator allows applications with low power consumption ...
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... Motor driver ICs FBlock diagram 674 BA6871BS ...
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... Motor driver ICs FPin descriptions BA6871BS 675 ...
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... Motor driver ICs FInput / output circuits (1) Driver output (2) Hall input (4) Torque control input 676 ( (5) Torque limit and current sensing BA6871BS ...
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... Motor driver ICs (6) Series regulator (7) Amplifier BA6871BS 677 ...
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... Motor driver ICs FElectrical characteristics (unless otherwise noted 25_C, V 678 BA6871BS = 5V 12V, AMP*V CC1 M CC2 CC = 12V) ...
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... The output current (I ) under this condition is given by: MAX 12P ofs *(TL* MAX. R 31P where R is the value of the resistor connected between 31P pin 31 and the ground the voltage applied to pin 12P 12, and (TL* the offset between the TL and CS ofs pins. BA6871BS 679 ...
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... Series regulator The BA6871BS has a series regulator output pin. The IC outputs a sink current according to the HIGH level output voltage detected. 680 As shown in Fig. 14, the regulator circuit reduces the power consumed by the IC by reducing the collector-to- emitter (C-E) voltage of the driver transistors ...
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... Motor driver ICs FApplication example BA6871BS 681 ...
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... Motor driver ICs FOperation notes The BA6871BS has two thermal shutdown circuits (TSD1 and TSD2) to protect the IC. The typical shutdown temperatures are 175_C for TSD1 and 215_C for TSD 2. When the TSD1 is activated at an elevated chip tempera- ture, the output pins (pins 1, 3, and 30) are set to the open state ...
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... Motor driver ICs FExternal dimensions (Units: mm) BA6871BS 683 ...