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CS3717A - 1A H-Bridge Stepper Motor Driver

General Description

The CS3717A controls and drives one phase of a bipolar stepper motor with chopper control of the phase current.

Current levels may be selected in three steps by means of two logic inputs which select one of three current comparators.

When both of these inputs are high the device is disabled.

Key Features

  • s Full/Half /Quarter Step Operation s Output Current Up to 1 A s Motor Supply Voltage 10V to 46V s Integrated Bootstrap Lowers Saturation Voltage s Built In Protection Diodes s Externally Selectable Current Level s Digital or Analog Control of Output Current Level s Thermal Overload Protection s Minimum External Components Absolute Maximum Ratings Power Supply Voltage (VDDA, VDDB) 50V Logic Supply Voltage (VCC)7V Logic Input Voltage (IN0, IN1,.

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Datasheet Details

Part number CS3717A
Manufacturer Cherry Semiconductor Corporation
File Size 168.26 KB
Description 1A H-Bridge Stepper Motor Driver
Datasheet download datasheet CS3717A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CS3717A CS3717A 1A H-Bridge Stepper Motor Driver Description The CS3717A controls and drives one phase of a bipolar stepper motor with chopper control of the phase current. Current levels may be selected in three steps by means of two logic inputs which select one of three current comparators. When both of these inputs are high the device is disabled. A separate logic input controls the direction of current flow. A monostable, programmed by an external RC network, sets the current decay time. The power section is a full H-bridge driver with four internal clamp diodes for current recirculation. An external connection to the lower emitters is available for the insertion of a sensing resistor. Two CS3717AÕs and several external components form a complete stepper motor drive subsystem.