LB11870 - Sanyo Semiconductor

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

LB11870
Manufacturer

Sanyo Semiconductor
ChipWorker Part#

CW272237978
RoHS

Lead free / RoHS Compliant
Description

Monolithic Digital IC For Polygonal Mirror Motors Three-Phase Brushless Motor Driver
Documentation

Datasheet

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LB11870 Specifications

Attribute	Attribute Value

Part Number	LB11870
Manufacturer	Sanyo Semiconductor
ChipWorker Part#	CW272237978
Documentation	Datasheet
Case/Package	HSSOP
	expand all
Product Lifecycle Status	Obsolete
RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

Monolithic Digital IC
For Polygonal Mirror Motors
Three-Phase Brushless Motor Driver
Overview
The LB11870 is a three-phase brushless motor driver developed for driving the motors used with the polygonal mirror in laser printers and plain paper copiers. It can implement, with a single IC chip, all the circuits required for polygonal mirror drive, including speed control and driver functions. The LB11870 can implement motor drive with minimal power loss due to its use of direct PWM drive.
Functions
• Three-phase bipolar drive
• Direct PWM drive
• Includes six high and low side diodes on chip.
• Output current control circuit
• PLL speed control circuit
• Phase lock detection output (with masking function)
• Includes current limiter, thermal protection, rotor constraint protection, and low-voltage protection circuits on chip.
• Deceleration type switching circuit (free running or reverse torque)
• PWM oscillator
• Power saving circuit

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