器件名称:
A3906SESTR-T
功能描述:
Low Voltage Stepper and Single/Dual DC Motor Driver
文件大小:
319.3KB 共10页
简 介:
A3906 Low Voltage Stepper and Single/Dual DC Motor Driver Features and Benefits 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 Description 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. Applications include the following: Digital still cameras (DSC) Cell phone cameras USB powered devices Battery powered devices Approximate size Package: 20-contact QFN (suffix ES) Typical Applications 0.1 μF CP1 CP2 CP3 0.1 μF CP4 VCP 0.1 μF SLEEP VBB 10 μF 10 V OUT1A M OUT1B SENSE1 +5 V 0.1 μF CP1 CP2 CP3 0.1 μF CP4 VCP 0.1 μF A3906 IN1 IN2 IN3 +5 V IN4 ……
