NJW4350

NJW4350 www.DataSheet4U.com UNIPOLAR STEPPER MOTOR DRIVER ♦ GENERAL DESCRIPTION ♦ PACKAGE OUTLINE The NJW4350 is a high efficiency DMOS unipolar stepper motor driver IC. Low Ron DMOS driver realizes high power efficiency and low heat generation of a stepper motor application. The motor can be controlled by step and direction pulse input which makes the programming task of a micro controller simple and easy. NJW4350D Enhanced control feature, Motor Origin output, INH and RESET, make the NJW4350 applicable for a wide range of stepper motor applications. ♦ FEATURES Wide Voltage Range 5 to 50V Low RON=0.9Ω typ.@Io=±500mA(U&L) STEP & DIR input Operation Half / Full Step Operation RESET Function Output Power Save Function (INH) Motor Origin Monitor Output (MO) Thermal Shutdown Circuit BCD Process Technology Package Outline DIP16, EMP16 ♦ PIN CONNECTION NJW4350E2 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1. 2. 3. 4. 5. 6. 7. 8. PB1 PB2 PGND PA1 PA2 DIR STEP NC 16. 15. 14. 13. 12. 11. 10. 9. VDD MO SGND NC RESET INH HSM NC ( DIP16 / EMP16 ) Fig.1 Pin Configuration -1- NJW4350 www.DataSheet4U.com ♦BLOCK DIAGLAM VDD IDD NJW4350 POWER ON RESET VMM IPLEAK IO PB1 IIH IIL STEP PB2 PA1 DIR HSM RESET INH PHASE LOGIC CIRCUIT PA2 VP VDD VIN VIH VIL VDD IMOLEAK IMO MO VMO SGND Thermal Shut Down PGND Fig.2 Brock Diagram ♦PIN DESCRIPTION Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin name PB1 PB2 PGND PA1 PA2 DIR STEP NC NC HSM INH RESET NC SGND MO VD...