AT5519
Preliminary Product Information
Dual Full-Bridge Stepper Motor Driver

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
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Features
• Interchangeable with SGS L6219DS
• 750mA continuous output current
• 28V output sustaining voltage
• Internal clamp diode
• Internal PWM current control
• Low output saturation voltage
• Internal thermal shutdown circuitry
• SOP-24 Package
Applications
•Scanner
General Description
The AT5519 motor driver is designed to drive both
winding of a bipolar stepper motor or bi-
directionally control two DC motor. An internal
PWM controls the output current to 750mA with
peak startup current up to 1A. Two logic-level
inputs select output current limits of 0, 33, 67, or
100% of the maximum level. A PHASE input to
each bridge determines load current direction. A
thermal protection circuitry disables the outputs if
the chip temperature exceeds safe operating limits.
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.