The 34920 is a multifunctional analog ASIC used in printer and scanner applications.
The 34920 ASIC integrates two switching voltage regulator circuits, four full H-bridge drivers, and a reset circuit in a single IC. Two DC/DC converters provide voltages from an unregulated input of 21 V to 42 V DC. Two of the bridges can be selected as either a bi-directional DC motor drives with pulse width modulation (PWM) control and peak currents of 1.2 A or a single bipolar step motor driver with average current levels of 183 mA and 550 mA per phase. In step mode, both drivers are capable of being operated in the quarter step mode.
MC34920 removed from active portfolio. Possible Replacement Part: None
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