A3903 Low Voltage DC Motor Driver Pre-End-of-Life This device is in production, however, it has been deemed Pre-End of Life. The product is approaching end of life. Within a minimum of 6 months, the device will enter its final, Last Time Buy, order phase. Date of status change: December 5, 2018 Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the A3906SESTR-T. NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. Allegro MicroSystems, LLC reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no respon- sibility for its use nor for any infringements of patents or other rights of third parties which may result from its use.A3903 Low Voltage DC Motor Driver Features and Benefits Description Constant voltage operation (adjustable) The A3903 is a low voltage bidirectional DC motor driver with 500 mA output peak rating a typical input voltage range of 3 to 5.5 V and output currents up Low power standby mode to 500 mA. The unique output full-bridge incorporates source- Small 2 mm 2 mm, 0.55 mm nominal height DFN side linear operation to allow a constant voltage across the motor package coil. This regulated output minimizes motor voltage change due Typical input voltage range of 3 to 5.5 V to I R variation and battery voltage tolerance. DS(on) Adjustable constant voltage or PWM operation Logic input pins are provided to control the motor direction of Less than 500 nA standby mode current rotation, brake, and standby (< 500 nA supply current) modes and 40 to 85 operating temperature range to allow optional PWM of the sink drivers. Internal protection circuitry includes thermal shutdown, undervoltage lockout, and crossover current (shoot-through) protection. The A3903 is supplied in a 2 mm x 2 mm, 0.55 mm nominal height, 8-lead DFN package, with exposed thermal pad (package suffix EE). This small footprint package is lead (Pb) free, with Package: 8 Contact DFN (suffix EE) 100% matte tin leadframe plating. Applications include: Robotic actuators and pumps Portable printers/scanners Camera lens/shutter control Battery powered toys and games Low noise test instrumentation systems Approximate Scale 1:1 Typical Application +V BAT VDD IN1 OUTA IN2 CPU A3903 M VREF OUTB VSET GND 3903-DS, Rev. 3 January 24, 2019 MCO-0000559