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UC3717A

Features: • Full-Step, Half-Step and Micro-StepCapability• Bipolar Output Current up to 1A• Wide Range of Motor Supply Voltage10-46V• Low Saturation Voltage with IntegratedBootstrap• Built-In Fast Recovery CommutatingDiodes• Current Levels Selected in Steps or V...

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SeekIC No. : 004535591 Detail

UC3717A: Features: • Full-Step, Half-Step and Micro-StepCapability• Bipolar Output Current up to 1A• Wide Range of Motor Supply Voltage10-46V• Low Saturation Voltage with IntegratedBo...

UC3717A Data Sheet

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Part Number:
UC3717A
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Full-Step, Half-Step and Micro-StepCapability
• Bipolar Output Current up to 1A
• Wide Range of Motor Supply Voltage10-46V
• Low Saturation Voltage with IntegratedBootstrap
• Built-In Fast Recovery CommutatingDiodes
• Current Levels Selected in Steps or VariedContinuously
• Thermal Protection with Soft Intervention


Pinout

Connection Diagram


Specifications

Voltage
     Logic Supply, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7V
     Output Supply, Vm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50V
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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1.2A
Junction Temperature, TJ. . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .  +150°C
Storage Temperature Range, TS . . . . . . . . . . . . . . . . ..  -55°C to +150°C


Description

The UC3717A is an improved version of the UC3717, used to switchdrive the current in one winding of a bipolar stepper motor.  TheUC3717A has been modified to supply higher winding current, morereliable thermal protection, and improved efficiency by providing inte-grated bootstrap circuitry to lower recirculation saturation voltages.

The diagram shown below presents the building blocks of theUC3717A.  Included are an LS-TTL compatible logic input, a currentsensor, a monostable, a thermal shutdown network, and an H-bridgeoutput stage.  The output stage features built-in fast recovery com-mutating diodes and integrated bootstrap pull up.  Two UC3717Asand a few external components form a complete control and driveunit for LS-TTL or micro-processor controlled stepper motor systems.

The UC3717A is characterized for operation over the temperaturerange of 0°C to +70°C.




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