NJM13775FR3

NJM13775 DUAL STEPPER MOTOR DRIVER „ GENERAL DESCRIPTION The NJM13775 is a switch-mode (chopper), constant current driver with two channels: one for each winding of a two-phase stepper motor. NJM13775 is equipped with a Disable input to simplify half-stepping operation. The NJM13775 contains a clock oscillator, a set of comparators and flip-flops implementing the switching control, and two output H-bridges, including recirculation diodes. Voltage supply requirements are +5 V for logic and +10 to +45 V for the motor. Maximum output current is 500mA per channel. NJM13775 achieved downsizing a motor control board by adopting small LQFP package, making this IC ideal for a multiple motor control board. „ PACKAGE OUTLINE NJM13775FR3 „ FEATURES ● Dual chopper driver ● 350mA continuous output current per channel ● Digital filter on chip eliminates external filtering components ● Packages LQFP48 „ BLOCK DIAGRAM Figure 1. Block diagram Figure 1. Block diagram -1- NJM13775 „ PIN CONFIGURATION GND 37 NC 38 VMM1 39 NC 40 GND 41 GND 42 GND 43 GND 44 GND 45 NC 46 VR1 47 C1 48 36 MA1 35 NC 34 E1 33 NC 32 MB1 31 NC 30 NC 29 MB2 28 NC 27 E2 26 NC 25 MA2 24 GND 23 NC 22 VMM2 21 NC 20 GND 19 GND 18 GND 17 GND 16 GND 15 NC 14 VR2 13 C2 NC 1 NC 2 Phase1 3 Dis1 4 RC 5 NC 6 VCC 7 NC 8 Dis2 9 NC 10 Phase2 11 NC 12 Figure 2. Pin configurations „ PIN DESCRIPTION PIN # Symbol 32 34 36 39 16,17,18,19,20,24,37, 41,42,43,44,45 MB1 E1 MA1 VMM1 GND 47 VR1 48 C1 3 Phase1 4 Dis1 5...