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UC3717 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 UC3717
部品説明 Stepper Motor Drive Circuit
メーカ Unitrode
ロゴ Unitrode ロゴ 



Total 9 pages
		

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UC3717 Datasheet, UC3717 PDF,ピン配置, 機能
Stepper Motor Drive Circuit
UC1717
UC2717
UC3717
FEATURES
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
DESCRIPTION
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.
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
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
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.
BLOCK DIAGRAM
7/95

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