Ordering number : ENN6203
LB1868M
Monolithic Digital IC
LB1868M
Two-Phase Brushless Fan Motor Driver
Overview
The LB1868M is a 2-phase unipolar brushless motor
driver. With only a few peripheral parts, lockup protection
and automatic recovery can be implemented. The IC can
be configured for 12V or 24V operation and a wide range
of variations, from LOW speed to H-High speed and from
60 cm to 120 cm square using the same PCB. This makes
5.15
6.4
4.4
Package Dimensions
unit: mm
3111-MFP14S
[LB1868M]
14
8
0.625
1.8max
0.1 1.5
it easy to design highly reliable fan motor installations.
Functions and Features
鈥?Output protection Zener diode with variable withstand
voltage
Z1, Z2 pins open: V
OLM
= 57V (24V specification)
Z1, Z2 pins shorted: V
OLM
= 32V (12V specification)
External Zener diode connected between Z1 and V
CC
pins: support for fans with large drive current
External resistor allows configuration for 12V or 24V.
Direct Hall element connection possible (built-in Hall
amplifier with hysteresis supports core without auxiliary
electrode)
Built-in output transistor with 1.0A output current
(strengthened negative-current support for core without
auxiliary electrode)
Built-in rotation detection function:
Low during rotation and High during stop
Built-in lockup protection with automatic recovery
ST pin for motor stop/drive (for standby mode of copiers
etc.)
FG output pin for rotation detection
BC pin for kickback noise reduction (with 2 external
capacitors)
Built-in thermal shutdown
0.35
1.0 1.0
SANYO : MFP14S
1
8.0
7
0.15
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
83100RM(KI) No. 6203-1/5
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