NJM3771FM2 Nisshinbo

Designated client product This product will be discontinued its production in the near term. And it is provided for customers currently in use only, with a time limit. It can not be available for your new project. Please select other new or existing products. For more information, please contact our sales office in your region. New Japan Radio Co.,Ltd. www.njr.com NJM3771 DUAL STEPPER MOTOR DRIVER GENERAL DESCRIPTION PACKAGE OUTLINE The NJM3771 is a stepper motor driver, which circuit is especially developed for use in microstepping applications in conjunction with the matching dual DAC (Digital-to- -Analog Converter) NJU39610. The NJM3771 contains a clock oscillator, which is common for both driver channels a set of comparators and flip-flops imple menting 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. NJM3771D2 NJM3771E3 ( DIP22 ) ( SOP24 ) FEATURES Dual chopper driver 650mA output current per channel Selectable slow / fast current decay for improved high- NJM3771FM2 speed microstepping ( PLCC28 ) Specially matched to Dual DAC NJU39610 Packages DIP22-D2 / PLCC28-M2 SOP24 JEDEC 300 mil (Batwing) BLOCK DIAGRAM Figure 1. Block diagram Ver.2011-12-08 - 1 -