LB11872H - ON Semiconductor

LB11872H Three-Phase Brushless Motor Driver

Ordering number : EN7257B LB11872H Monolithic Digital IC For Polygonal Mirror Motors Three-Phase Brushless Motor Driver http://onsemi.com Overview The LB11872H is a three-phase brushless motor driver developed for driving the motors used for the polygonal mirror in laser printers and similar applications. It can implement, with a single IC chip, all the c.

Features

• Three-phase bipolar current linear drive + midpoint control circuit.
• PLL speed control circuit.
• Speed is controlled by an external clock signal.
• Supports Hall FG operation.
• Built-in output saturation prevention circuit.
• Phase lock detection output (with masking function).
• Includes current limiter, thermal protection, rotor constraint protection, and low-voltage protection circuits on chip.
• On-chip output diodes. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Output current Allowable power dissipation Operating temperature Storage temperature Sy.