LB1684

The LB1684 is a 3-phase DD motor driver IC ideally suited for use in low_supply VTR motor drive, drum motor drive, and floppy disk motor drive applications.

The LB1684 has the following features:(1)designed to 5V-supply control system;(2)voltage-control system/current-control system avaliable.(3)speed control avaliable;(4)bidirection control avaliable.(5)20V/15A rating.

LB1684 also has some outstanding absolute maximun ratings(Ta=25°C) and electrical characteristics(Ta=25°C,VCC=1.5 V).Absolute maximun ratings:(1):maximum supply voltage is 22 V;(2)outpur current is 1.5 A;(3)allowale power diss-ipation is 2.2 W;(4)operating temperature is -20 to+75;(5)storage temperature is -55 to +125.electrical characteristics:(1):supply current is 13 mA typ anf 19 mA max when VC is 0 V and ICC1+ICC2;supply current is 20 mA typ anf 40 mA max when VC is 4 V and ICC2;(2)output saturation voltage is 1.4 V typ and 2.1 V max when I out is 0.58 A sink and source;utput saturation voltage is 2.0 V typ and 3.5 V max when I out is 1 A sink and source;(3): commom-mode input is 1.3 V min and 1.3 V max;(4):motor forward rotation is 2.0 V min and Vcc2 V max;(5)motor reverse rotation is 0 V min and 0.3 V max;(6):interphase curent variation is -25% min, 0% typ and +25% max with driver stage;interphase curent variation is -25% min, 0% typ and +25% max with output stage.(7):speed control voltage(OFF) is 2.1 V max when Rf is 0 and Rs is 0;speed control voltage(ON) is 2.38 V min and 2.58 V max when Rf is 0 and Rs is 0;(8):closed-loop voltage gain is 0.44 A/V when Rf is 1,Rs is 100and IL is 100 mA.(9):input sensit ivity is 20 mvpeal typ of hall input.