A3977SED Allegro Microsystems Inc, A3977SED Datasheet - Page 15

• Manufacturer Part Number: A3977SED
• Description: IC MOTOR DRIVER PWM DUAL 44PLCC
• Manufacturer: Allegro Microsystems Inc

Specifications of A3977SED

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: ±2.5A
• Voltage - Load: 8 V ~ 35 V
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A3977
Microstepping DMOS Driver with Translator
8 Microstep/Step Operation
MS
1
= MS
2
= H, DIR = H
The mixed-decay mode is controlled by the percent fast
decay voltage (V
greater than 0.6V
the voltage on the PFD input is less than 0.21V
fast-decay mode is selected. Mixed decay is between these
two levels.
PFD
DD
). If the voltage at the PFD input is
then slow-decay mode is selected. If
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
DD
then
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