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| 型号： | LB1692 |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2.5 A, PDIP20 |
| 封装： | 0.500 INCH, DIP-20 |
| 文件页数： | 5/5页 |
| 文件大小： | 107K |
| 代理商： | LB1692 |
LB1692
PS No.4844-5/5
1. Position Detection Circuit (Hall device input circuit)
The position detection circuit is a differential amplifier with hysteresis (typically 30mV).
Voltages within the common mode input voltage range (1.5V to VCC – 1.8V) should be used as the operating DC level.
We recommend using an input level that is more than three times the hysteresis, i.e., on the order of 120 to 160mVp-p.
2. Current Control Circuit
Current control is performed by switching the sink side transistor from the saturated to the unsaturated range.
Therefore, it is possible for ASO to be a problem.
I =
VRf
Rf
(A)
Therefore, if at all possible, applications should be designed so that the current limiter does not operate. Also, be
especially careful to design applications so that the maximum output current (2.5A) is not exceeded when the current
limiter operates. Note that a current limiter must be added to the VM power supply. (We recommend a current limiter
with a short delay time and with a design current that is about 60 to 70% of the current control circuit's current value.)
3. Protection Circuits
3-1. Low voltage protection circuit
The sink side output drivers are turned off if the VCC pin voltage falls below the stipulated range. This circuit is
provided to prevent incorrect operation.
3-2. Thermal cutoff protection circuit
If the junction temperature exceeds the stipulated temperature range, the sink side output drivers are turned off.
This is identical to the operation of the circuit described in 3-1 above.
4. VM power supply minimum voltage
The VM power supply voltage should be greater than or equal to the VCC voltage.
5. FG Output Circuit
The position detection inputs IN1, IN2, and IN3 are combined and the output is generated using waveform shaping.
The frequencies of those outputs are proportional to the rotational speed signal, and, as seen from the position detectors,
are equal to the input frequency itself (FG1) and three times the input frequency (FG2).
SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents 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.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
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 Semiconductor Co.,Ltd. product that you intend to use.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor Co.,Ltd.
This catalog provides information as of November, 2008. Specifications and information herein are subject
to change without notice.
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