Help me to search the replacement of stepper driver A3977

hello Friend

i have one stepper driver circuit in which i used allegro's A3977 driver IC

But before two year, allegro Company stop the production of IC A3977
and now stoke of A3977 is also finish

so, i want to replace A3977 in my driver by some other IC which has 3A or more current load capacity

so please help me to find the replacement of driver A3977

thanks in advance

Re: Help me to search the replacement of stepper driver A397

Have you tried the A3979 ?
**broken link removed**

Hi,

I think THB6064AH is the best choice.
youcan find its information from http://www.hhbytech.com/en/product_note.aspx?nid=87

A3977 and A3979 have the same specifications and are pin to pin compatible for the same package. You can simply replace and check for you circuit wroking.

THB6064AH produced by TOSHIBA Semiconductor Co.Ltd of Japan, it is newly key launched product. Now is enjoying good market in the world with high tech and quality, good reputation.

Stepper Motor Controller THB6064AH Semiconductor Active IC
The THB6064AH is a PWM chopper-type sinusoidal micro-step bipolar stepping motor driver IC.
It supports 8 kind of excitation modes and forward/reverse mode and is capable of low-vibration, high-performance drive of 2-phase bipolar type stepping motors using only a clock signal.

Features
Single-chip bipolar sinusoidal micro-step stepping motor driver
Uses high withstand voltage BICD process: Ron (upper + lower) 0.4 (typ.)
Forward and reverse rotation control available
Selectable phase drive (1/2, 1/8, 1/10, 1/16, 1/20, 1/32, 1/40, 1/64 step)
Output monitor pins (DOWN / ALERT)
Equipped with reset and enable pins
Built-in thermal shutdown(TSD) and over-current detection(ISD) circuit



Parameter
High output withstand voltage: VDSS 50 V
High output current: Iout 4.5 A (peak)
Packages: HZIP25-P-1.27
Dementions:3.6*1.4*0.5 cm
Weight:9.86g