LB1971V View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LB1971V Datasheet PDF : 9 Pages
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Continued from preceding page.
Pin No. Symbol
Pin voltage
LB1971V
Function
17
OSC
• Connection for the triangular waveform
oscillator capacitor. This waveform is
used to generate the forcible motor
startup waveform during motor startup.
Connect a capacitor and a resistor
between this pin and ground.
Capacitance required depends on the
characteristics of motor.
Use a capacitor so that the time interval
until when the motor rotation reaches the
desired speed becomes the shortest.
Equivalent circuit
VCC1
1 kΩ
17
18
WIN
20
UIN
19
VIN
21
FCOM
• Inputs to the motor back EMF detection
comparator
These pins are connected to the output
pins via a resistor internally in the IC.
Connect capacitors between these IN
pins and their corresponding -FCOM.
VCC1
2 1 23
20 10 kΩ
19
200 Ω
18
• Motor coil midpoint input
The back EMF output is detected by
refering to these voltages.
200 Ω
21
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.
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.
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.
This catalog provides information as of September, 1999. Specifications and information herein are
subject to change without notice.
PS No.6214-9/9
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