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Description:

The UCN5804B is designed as one kind of stepper-motor translator/driver with high-current and high-voltage bipolar outputs.It provides complete control and drive for a four-phase unipolar steppermotor with continuous output current ratings to 1.25 A per phase (1.5 A startup) and 35 V.Also it consists of energizing one motor phase at a time in an A-B-C-D (or D-C-B-A) sequence and this excitation mode consumes the least power and assures positional accuracy regardless of any winding inbalance in the motor.

Features of the UCN5804B are:(1)1.5 A maximum output current;(2)35 V output sustaining voltage;(3)wave-drive, two-phase, and half-step drive formats;(4)internal clamp diodes;(5)output enable and direction control;(6)power-on reset;(7)internal thermal shutdown circuitry.

The absolute maximum ratings of the UCN5804B can be summarized as:(1)output voltage:50 V;(2)output sustaining voltage:35 V;(3)output sink current:1.5 A;(4)logic supply voltage:7.0 V;(5)input voltage:7.0 V;(6)package power dissipation:see graph;(7)operating temperature range:-20°C to +85°C;(8)storage temperature range:-55°C to +150°C.If you want to know more information such as the electrical characteristics about the UCN5804B,please download the datasheet in www.seekic.com or www.chinaicmart.com .