TDA2161

The TDA2161 is a bipolar integrated circuit intended to control and drive the current in one winding of a stepper motor using a switch mode technique,The output drive bridge is capable of producing a bidirectional current and incorporates all required clamping diodes.The logic control input may by driven by TTL,CMOS,or a micro processor contrlo system.

Special features of TDA2161 are:(1)bipolar output current drive enabling maximum performance to be obtained from the stepper motor;(2)full-step,half-step and quarter-step operating modes may be utilized by digital control;(3)built in clamping diodes on output drives;(4)separate suppliers for internal logic and motor drive may be powered up and down in any sequence;(5)wide range of output current control 20-500mA;(6)output current levels may be selected in steps digitally or varied continuously by analog control.

Absolute maximum ratings of TDA2161 are:(1)motor supply voltage:15 V;(2)motor drive current:-500 to 500 mA;(3)logic supply voltage:0 to 7.5 V;(4)analog control input:15 V;(5)input voltage:Vcc V;(6)storage temperature:-55 to 150;(7)operating chip junction temperature:0 to 70.