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PDF LB11860T Data sheet ( Hoja de datos )
| Número de pieza | LB11860T | |
| Descripción | (LB11861) Direct PWM Variable Speed Fan Motor Driver IC Developed | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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PRODUCT INFORMATION
Vol.171
Direct PWM Variable Speed Fan Motor Driver IC Developed
Easily implements variable speed control of PC cooling fan and cooling
water pump motors, and can also be used in fuel and air pumps in
fuel cells
LB11860T, LB11861/M/H
Overview
The personal computer market is expected to grow by over 110% relative to the previous year in both quarters
of the second half of 2003, and continued growth is forecast for 2004. While desktop PCs are, of course, show-
ing brisk sales, it is the notebook personal computer that is the driving force behind this growth.
While trends such as the increasingly widespread availability of broadband networks and the increasing use of
multimedia are seen as forming the background for this growth, the increasingly high level of personal comput-
er use is naturally driving demand for higher functionality.
The radically higher operating speeds in CPUs and video cards is resulting in increasing amounts of heat gener-
ated by this high-speed operation. At the same time, there are also strong demands for miniaturization and qui-
eter operation. Thus conventional air cooling methods are now reaching the limits of their applicability.
Currently, both notebook and desktop personal computers often use three or more cooling fans to cool the inte-
rior of the computer. Although increased cooling capacity in each fan is desired, the market desires fan motor
drivers that implement the following responses to the increases in noise and power associated with increasing
the number of fans.
• Fan motor speed control based on the amount of work performed (amount of heat generated) by the
CPU
• Support for water cooling, which can achieve quieter operation and increased cooling efficiency.
• Support for quieter operation, higher speeds, and higher efficiency (for lower current drain)
SANYO develops motor driver products to respond to the above market needs based on the following stand-
points.
— High efficiency and low power provided by single-phase bipolar drive
— Reduced switching noise and reduced loss provided by soft switching during phase switching
— Variable speed function provided by direct PWM drive using external signals
— Extensive product lineup to support a wide range of supply voltage and motor current ratings
and fan motor sizes
SANYO Electric Co., Ltd. Semiconductor Company Sales & Marketing Division
TOKYO OFFICE: Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
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1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet LB11860T.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LB11860T | (LB11861) Direct PWM Variable Speed Fan Motor Driver IC Developed | Sanyo |
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