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UC3770B

Unitrode
Part Number UC3770B
Manufacturer Unitrode
Description High Performance Stepper Motor Driver
Published Apr 17, 2020
Detailed Description High Performance Stepper Motor Drive Circuit UC3770A UC3770B FEATURES • Full-Step, Half-Step and Micro-Step Capability...
Datasheet PDF File UC3770B PDF File

UC3770B
UC3770B

Overview
High Performance Stepper Motor Drive Circuit UC3770A UC3770B FEATURES • Full-Step, Half-Step and Micro-Step Capability.
• Bipolar Output Current up to 2A.
• Wide Range of Motor Supply Voltage: 10–50V • Low Saturation Voltage • Wide Range of Current Control: 5mA–2A.
• Current Levels Selected in Steps or Varied Continuously.
• Thermal Protection and Soft Intervention.
DESCRIPTION The UC3770A and UC3770B are high-performance full bridge drivers that offer higher current and lower saturation voltage than the UC3717 and the UC3770.
Included in these devices are LS-TTL compatible logic inputs, current sense, monostable, thermal shutdown, and a power H-bridge output stage.
Two UC3770As or UC3770Bs and a few external components form a complete microprocessor-controllable stepper motor power system.
Unlike the UC3717, the UC3770A and the UC3770B require external high-side clamp diodes.
The UC3770A and UC3770B are identical in all regards except for the current sense thresholds.
Thresholds fo...


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