Overview
The LB1876 is a driver for polygon mirror motors such as used in laser printers and similar equipment.
It incorporates all necessary circuitry (speed control + driver) on a single chip. Direct PWM drive enables drive with low power loss.
Features
⢠3-phase bipolar drive
⢠Direct PWM drive technique
⢠Built-in lower side output diode
⢠Output current limiter
⢠Reference clock input circuit (FG frequency equivalent)
⢠PLL speed control circuit
⢠Phase lock detector output (with masking function)
⢠Built-in protection circuitry includes current limiter, restraint protection, overheat protection, low-voltage protection, etc.
⢠Brake method switching circuit (free-run or reverse torque)
⢠5V regulator output
⢠Power save function
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