21407 MS IM 20060614-S00001 / 81006 MH IM 20060213-S00001 No.A0367-1/12

LB11872V

Overview

The LB11872V 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 circuits required for polygonal

mirror drive, including speed control and driver functions. The LB11872V can implement motor drive within minimal

drive noise due to its use of current linear drive.

Note that the LB11872V differs from the LB11872H only in the package.

Functions and 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.

Ordering number : ENA0367A

Monolithic Digital IC

For Polygonal Mirror Motors

Scanner Driver IC

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.