PBL3771N Datasheet PDF

Part Number : PBL3771N

Function : Precision stepper motor driver

Manufacturers : Ericsson

Pinouts :

PBL3771N datasheet

Description :

The PBL 3771 is a switch-mode, constant-current driver IC (chopper) with two channels, one for each winding of a two-phase stepper motor. The circuit is especially developed for use in microstepping applications in conjunction with the matching dual DAC (Digital-to-Analog Converter) PBM 3960. A complete driver system consists of these two ICs, a few passive components and a microprocessor for generation of the proper control and data codes required for microstepping.

The PBL 3771 contains a clock oscillator, which is common for both driver channels; a set of comparators and flip-flops implementing the switching control; and two H-bridges with internal recirculation diodes. Voltage supply requirements are +5 V for logic and +10 to +45 V for the motor. Maximum output current is 650 mA per channel.

A special logic function is used to select slow or fast current decay in the output stage for improved high-speed microstepping. The close match between the two driver channels guarantees consistent output current ratios and motor positioning accuracy.

PBL3771N Datasheet PDF Download

PBL3771N pdf

Other data sheets within the file :
PBL3771,PBL3771/1NS,PBL3771/1QNS,PBL3771/1SOS,PBL3771/1SOT