PBL3776-1 Datasheet | Ericsson

February 1999 PBL 3776/1 Dual Controller IC for High Current Stepper Motor Applications 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. The PBL 3776/1 contains a clock oscillator, which is mon for both driver channels, a set of parators and flip-flops implementing the switching control, and two output sections each containing four outputs, two source and...