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LB11870

Part Number	LB11870
Manufacturer	Sanyo
Description	Three-Phase Brushless Motor Driver
Published	Apr 25, 2005
Detailed Description	Ordering number : ENN7256 Monlithic Digital IC LB11870 Three-Phase Brushless Motor Driver for Polygonal Mirror Motors ...
Datasheet	LB11870 PDF File

Overview

Ordering number : ENN7256 Monlithic Digital IC LB11870 Three-Phase Brushless Motor Driver for Polygonal Mirror Motors 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.
Package Dimensions unit: mm 3265-HSSOP48 [LB11870] 17.
8 (6.
2) 48 25 (4.
9) • • • • • • • 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 reve...

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