LB1872 Description
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 plement of protection circuits, including thermal protection, low voltage protection, and current limiter circuits, provided...
LB1872 Key Features
- Integrates the circuits (speed control and driver circuits) required for laser printer polygon mirror motor drive in a s
- Uses a current linear drive technique for minimal motor noise. Only a small capacitors are required for output oscillati
- 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