LB11873-MPB-E

3-Phase Brushless DC Motor Driver 38Pin36+2Tab HSOP EP Fan-Fold

The LB11873 is a 3-phase brushless motor driver developed for driving the polygonal mirror motor used in plain-paper copiers and similar products. This IC can implement the circuits required for polygonal mirror motor drive speed control and driver circuits in a single chip. The LB11873 implements low-noise/low-vibration PWM drive by changing the current at phase switching gradually to reduce motor noise.

Features

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Three-phase bipolar drive quiet direct PWM

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PLL speed control circuit

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Hall sensor FG support

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Dedicated external clock

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Brake mode switching circuit free running and reverse braking

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Phase lock detection output with masking function

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Built-in current limiter, constraint protection, undervoltage protection, thermal protection, and CLK line disconnection protection circuits

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Input pins support 3V system microcontrollers