LB1921 Datasheet, PDF (1/10 Pages) Sanyo Semicon Device – Three-Phase Brushless Motor Driver for OA Applications

Ordering number : EN5439
Monolithic Digital IC
LB1921
Three-Phase Brushless Motor Driver
for OA Applications
Overview
The LB1921 is a single-chip motor driver circuit that
provides direct PWM drive output appropriate for driving
the power brushless motors used in office automation
equipment. The LB1921 also provides a variety of
peripheral functions, including speed control and FG
amplifier circuits, on chip.
Applications
• Paper feed and drum motor drivers in FAX and PPC
units
Package Dimensions
unit: mm
3147A-DIP28HS
[LB1921]
Functions and Features
• The LB1921 is an improved output current version of
the LB1824.
• Three-phase bipolar brushless motor driver
• Digital speed control circuit
• Thermal shutdown circuit
• Start/stop pin
• Lock detector output
• Crystal oscillator and divider circuits
• FG and error amplifiers
• Power supply current limiter
SANYO: DIP28HS
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
53096HA (OT) No. 5439-1/10