NJM3770AD3 Datasheet | New Japan Radio

NJM3770A STEPPER MOTOR DRIVER s GENERAL DESCRIPTION NJM3770A is a stepper motor driver, which consists of a LS-TTL patible logic input stage, a current sensor, a monostable multivibrator and a high power H-bridge output stage. The NJM3770A is a high power version and pinpatible with the NJM3717.Two NJM3770A and a small number of external ponents form a plete control and drive unit stepper motor systems. s EATURES - Half-step and full-step operation - Switched mode bipolar constant current drive - Wide range of current control 5 -1800 m A - Wide voltage range 10 - 45 V - Thermal overload protection - Packages DIP16 (Batwing) / PLCC28 / EMP20 s PACKAGE OUTLINE NJM3770AE2 NJM3770AFM2 s BLOCK DIAGRAM Phase I 1 I0 VR Schmitt Trigger Time Delay ≥1 ≥1 &&&& ≥1 ≥1 + - + - + - Current Sensor Output Stage Monostable toff = 0.69 - RT - CT NJM3770A Figure 1. Block diagram s PIN...