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.