LB1870

The LB1870 is designed as one kind of three-phase brushless motor driver that is optimal for LBP and LBF polygon mirror motor drive. Features of the LB1870 are:(1)single chip implementation of all circuits required for LBP polygon mirror motor drive (speed control and driver circuits);(2)low motor drive noise level due to the current linear drive scheme implemented by these ICs. Also small capacitors suffice for motor output oscillation suppression, with certain motors not requiring these capacitors at all;(3)extremely high rotational precision provided by PLL speed control;(4)buill-in phase lock detector output;(5)four motor speed modes set by switching the clock divider provided under internal clock / crystal oscillator operation;(6)use of an external clock allows arbitrary motor speed;(7)built-in FG and intrgrating amplifiers.

The absolute maximum ratings of the LB1870 can be summarized as:(1)maximum supply voltage: 30 V;(2)maximum output current: 1.0 A;(3)allowable power dissipation Pd max 2:20 W;(4)operating temperature: -20 to +80 ;(5)storage temperature range: -55 to +150 . If you want to know more information such as the electrical characteristics about the LB1870, please download the datasheet in www.seekic.com or www.chinaicmart.com .