UC3717AJ

更新时间： 2024-11-21 13:15:07

品牌	Logo	应用领域
德州仪器 - TI		电机驱动
页数	文件大小	规格书
10页	479K
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UC3717AJ 数据手册

UC1717

UC2717

UC3717

Stepper Motor Drive Circuit

FEATURES

DESCRIPTION

•

Half-step and Full-step Capability

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.

Bipolar Constant Current Motor Drive

Built-in Fast Recovery Schottky

Commutating Diodes

•

Wide Range of Current Control 5-1000mA

Wide Voltage Range 10-45V

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.

Designed for Unregulated Motor Supply

Voltage

•

Current Levels can be Selected in Steps

or Varied Continuously

Thermal Overload Protection

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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V

Input Current

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.

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

BLOCK DIAGRAM

7/95

12 3 4 5 6 7...10

中文翻译

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