Unitrode UC3717
The UC3717 has been designed to control and drive the current in one winding of a bipolar stepper motor. The circuit consists of an LSTTL-compatible logic input, a current sensor, a monostable and an output stage with built-in protection diodes. The UC1717 is characterized for operation over the full military temperature range of -55°C to +125°C, the UC2717 is characterized for -25°C to +85°C, and the UC3717 is characterized for 0°C to +70°C.| Part No. | UC3717 |
|---|---|
| Datasheet | UC3717 Download |
| Manufacturer |  Unitrode |
| Description | Stepper Motor Drive Circuit |
| Buy | Stock & Price |
FEATURES
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● Half-step and Full-step Capability Bipolar Constant Current Motor Drive Built-in Fast Recovery Schottky Commutating Diodes Wide Range of Current Control 5-1000mA Wide Voltage Range 10-45V Designed for Unregulated Motor Supply Voltage Current Levels can be Selected in Steps or Varied Continuously Thermal Overload Protection
DESCRIPTION
Two UC3717s and a few external components form a complete control and drive unit for LSTTL or micro-processor controlled stepper motor systems.ABSOLUTE MAXIMUM RATINGS
(Note 1) Voltage Logic Supply, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Output Supply, VM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45V Input Voltage Logic Inputs (Pins 7, 8, 9). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Analog Input (Pin 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vcc Reference Input (Pin 11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
