LB1872

Ordering number : EN5625A Monolithic Digital IC LB1872 Polygon Mirror Scanner Driver IC Overview The LB1872 is a 3-phase brushless motor driver IC developed for driving the polygon mirror motor used in laser printers and similar products. braking (free running when stopped) Built-in FG and error amplifiers Full complement of protection circuits, including thermal protection, low voltage protection, and current limiter circuits, provided on chip. Functions and Features Integrates the circuits (speed control and driver circuits) required for laser printer polygon mirror motor drive in a single chip. Uses a current linear drive technique for minimal motor noise. Only a small capacitors are required for output oscillation prevention. PLL speed control adopted for high-precision rotation with excellent jitter characteristics. Phase lock detection output with a chattering prevention function Four rotation rates can be set up using a single crystal oscillator to support 240, 300, 400, and 600 dpi operation. Arbitrary rotation rates can be acquired when an external clock is used. Deceleration function implemented by short-circuit Package Dimensions unit: mm 3147B-DIP28H [LB1872] SANYO: DIP28H Allowable power dissipation, Pd max - W With an arbitrarily large heat sink Independent IC Ambient temperature, Ta - °C SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN 13098H...