LB11860T [ONSEMI]
LB11860T;
| 型号： | LB11860T |
| 厂家： | 
ONSEMI |
| 描述： | LB11860T 光电二极管 外围集成电路 |
| 文件： | 总3页 (文件大小：27K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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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PRODUCT INFORMATION
SANYO's recently developed LB11860T and LB11861/M/H are the industry's first motor drivers that adopt the
external signal direct PWM control method, and can achieve radical simplification of the external circuits
required with conventional thermistor based applied voltage speed control method commonly adopted by per-
sonal computer manufacturers.
The LB11861/M/H support a circuit structure that adds a heat dispersion resistor and thus reduces the thermal
load on the driver IC itself. This allows the implementation fan motor drive circuits with even larger margins.
These ICs can be used not only for air cooling fan motors, but for the water recirculating pump motor used in
water cooling systems as well. These ICs provide both quieter operation and the variable speed functionality
that is critically important for water cooling system pumps. This year, 2003, has been referred to as "year one"
of the water cooling age, and water cooling systems are expected to be standard by 2005.
These SANYO technologies can support use in the fluid transport and gas transport pumps for use in the fuel
cells now being tested and studied by a variety of companies, and SANYO is planning to released these ICs for
use in other new fields as well.
Common Functions
• Single phase bipolar drive fan motor driver
• External signal input based direct PWM drive with variable speed functionality
• Built-in soft switching function for low loss, high efficiency, and high speed
• Motor constraint protection and auto-start functions
• FG and RD outputs (speed operation signals)
• Hall effect sensor bias voltage
• Kickback suppression function
Specifications
LB11860T (5 V device for notebook personal computers)
• Operating supply voltage: Up to 7 V (VCC = 3 to 6 V)
• Output current: Up to 0.6 A
• PWM oscillator frequency: 16 to 50 kHz standard
• Package: MSOP-10 ultraminiature package for notebook personal computers
LB11861 (12 V device for desktop personal computers)
• Operating supply voltage: Up to 15 V (VCC = 5 to 13.8 V)
• Output current: Up to 1.5 A
• PWM oscillator frequency: 16 to 50 kHz standard
• Package: The LB11861 is provided in 3 different packages to match application size and current
needs. (MFP-10S, HSSOP-14, HSSOP-16)
SANYO Electric Co., Ltd. Semiconductor Company Sales & Marketing Division
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PRODUCT INFORMATION
Sample Availability
The LB11860T and LB11861/M/H will be available in sample quantities in December 2003 and in
production quantities in the second quarter of 2004.
DECEMBER 15, 2003
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.
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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.
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Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
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In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
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Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
SANYO Electric Co., Ltd. Semiconductor Company Sales & Marketing Division
PS.D2203/171
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