LB1872 Datasheet, PDF (1/11 Pages) Sanyo Semicon Device – Polygon Mirror Scanner Driver IC

Ordering number : EN5625A
Monolithic Digital IC
LB1872
Polygon Mirror Scanner Driver IC
Overview
The LB1872 is a 3-phase brushless motor driver IC
developed for driving the polygon mirror motor used in
laser printers and similar products.
Functions and Features
• Integrates the circuits (speed control and driver circuits)
required for laser printer polygon mirror motor drive in a
single chip.
• Uses a current linear drive technique for minimal motor
noise. Only a small capacitors are required for output
oscillation prevention.
• PLL speed control adopted for high-precision rotation
with excellent jitter characteristics.
• Phase lock detection output with a chattering prevention
function
• Four rotation rates can be set up using a single crystal
oscillator to support 240, 300, 400, and 600 dpi
operation.
• Arbitrary rotation rates can be acquired when an
external clock is used.
• Deceleration function implemented by short-circuit
braking (free running when stopped)
• Built-in FG and error amplifiers
• Full complement of protection circuits, including
thermal protection, low voltage protection, and current
limiter circuits, provided on chip.
Package Dimensions
unit: mm
3147B-DIP28H
[LB1872]
SANYO: DIP28H
With an arbitrarily large heat sink
Independent IC
Ambient temperature, Ta - °C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN
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