A3906SESTR-T Low Voltage Stepper and Single/Dual DC Motor Driver SMD IC QFN-20-EP(4×4)

Description

A3906SESTR-T QFN-20-EP(4×4) Stepper Motor Driver SMD IC Designed for pulse width modulated (PWM) control of low voltage stepper motors, and single and dual DC motors, the A3906 is capable of output currents up to 1 A per channel and operating voltages from 2.5 to 9 V. The A3906 has an internal fixed off-time PWM timer that sets a peak current based on the selection of a current sense resistor. An overcurrent output flag is provided that notifies the user when the current in the motor winding reaches the peak current determined by the sense resistor. The fault output does not affect driver operation. The A3906 is provided in a 20-contact, 4 mm × 4 mm, 0.75 mm nominal overall height QFN, with exposed pad for enhanced thermal dissipation. It is lead (Pb) free, with 100% matte tin leadframe plating. Features: 2.5 to 9 V operation Internal PWM current limit control Synchronous rectification for reduced power dissipation Peak current output flag Undervoltage lockout Low RDS(on) outputs Small package Brake mode for DC motors Sleep function Crossover-current protection Thermal shutdown Specifications: Type Description Category Integrated Circuits (ICs) Power Management (PMIC) Motor Drivers, Controllers Motor Type – Stepper Bipolar Motor Type – AC, DC Brushed DC Function Driver – Fully Integrated, Control and Power Stage Output Configuration Half Bridge (4) Interface Parallel Technology DMOS Step Resolution 1, 1/2 Applications Battery Powered Current – Output 1A Voltage – Supply 2.5V