A3977SEDT Stepper Motor Driver PLCC44 with Socket Buy Online

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A3977SEDT Stepper Motor Driver PLCC44 with Socket


The A3977xED and A3977xLP are complete microstepping motor drivers
with built-in translator. 

They are designed to operate bipolar stepper motors in
full-, half-, quarter-, and eighth-step modes, with output drive capability of 35
V and ±2.5 A. The A3977 includes a fixed off-time current regulator that has
the ability to operate in slow-, fast-, or mixed-decay modes. This currentdecay
control scheme results in reduced audible motor noise, increased step
accuracy, and reduced power dissipation.

The translator is the key to the easy implementation of the A3977. By
simply inputting one pulse on the STEP input the motor will take one step
(full, half, quarter, or eighth depending on two logic inputs). There are no
phase-sequence tables, high-frequency control lines, or complex interfaces to
program. The A3977 interface is an ideal fit for applications where a complex
µP is unavailable or over-burdened.

Internal synchronous-rectification control circuitry is provided to improve
power dissipation during PWM operation.

Internal circuit protection includes thermal shutdown with hysteresis,
under-voltage lockout (UVLO) and crossover-current protection. Special
power-up sequencing is not required.

A3977SEDT Stepper Motor Driver PLCC44 with Socket

  • Product Code: A3977SEDT Stepper Motor Driver PLCC44 with Socket
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