Description
The PBL 3772/1 is a switch-mode (chopper), constant-current driver IC with two chan-nels, one for each winding of a two-phase stepper motor. The circuit is similar to Ericsson´s PBL 3771/1, but has been designed to generate a minimum amount of power dissipation and can deliver substantially more current to the stepper motor, up to 1000 mA continuously per channel. At 2 x 750 mA output current, power dissipation is only 1.8 W

KEY FEATUREs
• Dual chopper driver in a single package.
• Operation at -40 C
• 1000 mA continuous output current per channel.
• Very low power dissipation, 1.8 W at 2 x 750 mA output current.
• Close matching between channels for high microstepping accuracy.
• Specially matched to the Dual DAC PBM 3960.
• Plastic 22-pin batwing DIP package or 28-pin power PLCC with leadframe for heat-sinking through PC board copper.