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UC3717N датащи(PDF) 1 Page - Texas Instruments |
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UC3717N датащи(HTML) 1 Page - Texas Instruments |
1 / 10 page 7/95 • 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 Stepper Motor Drive Circuit The UC3717 has been designed to control and drive the current in one winding of a bipolar stepper motor. The circuit consists of an LS- TTL-compatible logic input, a current sensor, a monostable and an output stage with built-in protection diodes. Two UC3717s and a few external components form a complete control and drive unit for LS- TTL or micro-processor controlled stepper motor systems. The UC1717 is characterized for operation over the full military tem- perature 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. UC1717 UC2717 UC3717 BLOCK DIAGRAM FEATURES DESCRIPTION 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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V Input Current Logic Inputs (Pins 7, 8, 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10mA Analog Inputs (Pins 10, 11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10mA Output Current (Pins 1, 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1A Junction Temperature, TJ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Storage Temperature Range, TS . . . . . . . . . . . . . . . . . . -55°C to +150°C ABSOLUTE MAXIMUM RATINGS (Note 1) Note 1: All voltages are with respect to ground, Pins 4,5, 12, 13. Pin numbers refer to DIL-16 package. Cur- rents are positive into, negative out of the specified ter- minal. Note 2: Consult Packaging Section of Databook for in- formation on thermal limitations and considerations of package. |
Аналогичный номер детали - UC3717N |
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Аналогичное описание - UC3717N |
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