Description
The PBL 3776/1 is a switch-mode (chopper), constant-current controller IC intended for controlling external transistors in a high current stepper motor application.The IC has two channels one for each winding of a two-phase stepper motor. The circuit is similar to Ericsson´s PBL 3775/1. PBL 3776/1 is equipped with a Disable input to simplify half-stepping operation.

KEY FEATUREs
• Suitable to drive any external Mos Fet or bipolar power transistor.
• 0°C to +85°C operation.
• Few external components.
• Crossconduction prevented by time delay.
• Close matching between channels for high positioning accuracy.
• Digital filter on chip eliminates external filtering components.
• Plastic 24-pin "narrow" DIP package.