Микросхемы и комплектующие A4985SLPTR-T

MOTOR DRIVER , STEPPER, 24TSSOP

The A4985SLPTR-T is a DMOS Micro-stepping Driver with built in translator for easy operation and over-current protection. The A4985 driver is designed to operate bipolar stepper motors in full, half, quarter and eighth-step modes, with output drive capability of 35V and ±1A. It includes a fixed off-time current regulator that has the ability to operate in slow or mixed decay modes. It is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened. The translator is the key to the easy implementation, simply inputting one pulse on the STEP input drives the motor one micro-step. The chopping control automatically selects the current decay mode (slow or mixed). Mixed decay current control results in reduced audible motor noise, increased step accuracy and reduced power dissipation. Internal circuit protection includes thermal shutdown with hysteresis, under-voltage lockout (UVLO) and cross over-current protection.

• Low RDS (ON) outputs
• Automatic current decay mode detection/selection
• Synchronous rectification for low power dissipation
• Short to ground protection
• Shorted load protection
• Low current sleep mode <10µA

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Привод Двигателя и Управление, Промышленное