NJW4351

www.DataSheet4U.com NJW4351 Unipolar Stepper Motor Driver GENERAL DESCRIPTION The NJW4351 is a high efficiency DMOS unipolar stepper motor driver IC. Compared to previous devices, it is more suitable for low voltage operation, capable of handling 5.0V, 3.3V and the like logic circuits. Drive Stage consists of DMOS which produces high efficiency and low heat generation motor drive circuit. The motor can be controlled by the STEP and DIR system. Further more, to improve controllability of system, MO, ENABLE, RESET and PD function are included, various applications are possible. FEATURES Supply Voltage PACKAGE OUTLINE NJW4351VC3 NJW4351D VDD=2.7 to 5.5V VMM= to 55V Output Current Io=1.5A peak at VDD=5V Low Quiescent Current IDD=500µA typ. STEP&DIR Input Operation (Internal Translator) HALF/FULL Mode Generation TTL compatible Input With Schmitt-Comparator ENABLE Function RESET Function MO (Motor Origin Monitor) -Position-indication Output PD (Standby) Function Under Voltage Lock Out Thermal Shutdown Circuit Alarm Output Function (As the protection circuit operates) BCD Technology Package Outline SSOP20-C3, DIP16 BLOCK DIAGRAM VDD NJW4351 POWER ON RESET OUT2B OUT2A HSM STEP DIR RESET GATE DRIVE OUT1B OUT1A TRANSLATOR ENABLE PD Bias Circuit MO ALARM UNDER VOLTAGE LOCK OUT SENSE1 THERMAL SHUT DOWN SENSE2 GND ‘Ver.2010-03-26 -1- NJW4351 PIN CONNECTION PD VDD HSM STEP DIR RESET ENABLE MO ALARM GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 ...