The LB1939T is abipolar stepping motor driver that features low voltage operation, a low saturation voltage and low power consumption. It operates full/half step drive. It supports constant voltage and constant current drive, can control two iris motors and is optimal for shutter, iris and AF drive in 3V battery operated still digital cameras and other battery operated equipment.

• Low voltage drive
• Low saturation voltage output
• Supports constant voltage and constant current drive
• Built-in reference voltage circuit