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PDF LB1924 Data sheet ( Hoja de datos )
| Número de pieza | LB1924 | |
| Descripción | Power Brushless Motor Driver IC for Office Automation Equipment | |
| Fabricantes | Sanyo | |
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Ordering number : ENN5687B
Monolithic Digital IC
LB1924
Power Brushless Motor Driver IC for Office
Automation Equipment
Overview
The LB1924 is a direct PWM drive output driver IC
appropriate for the power brushless motors used in office
automation equipment. It includes a speed control circuit,
an FG amplifier, and other peripheral circuits and allows a
drive circuit to be implemented with a single IC. It allows
the number of external components to be reduced by
including a lock protection circuit, a kickback absorption
diode for the lower output side, and other components on
chip.
Functions
• Breakdown voltage: 30 V, output current: 3.1 A
• Direct PWM drive output
• Speed discriminator + PLL speed control technique
• Crystal oscillator circuit
• Built-in FG and integrating amplifiers
• Forward/reverse switching circuit
• Speed lock detection output
• On-chip lower output side kickback absorption diode
• Full complement of built-in protection circuits,
including lock protection, current limiter, and thermal
protection circuits
Package Dimension
unit: mm
3147B-DIP28H
[LB1924]
28 15
R1.7
1 20.0 14
27.0
1.93 1.78
0.6 1.0
SANYO: DIP28H
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
73099TH (OT)/83097HA(OT) No. 5687-1/11
1 page  
Equivalent Circuit Block Diagram
LB1924
No. 5687-5/11
5 Page 
LB1924
Continued from preceding page.
Pin No. Pin
Pin function
20 CR PWM oscillator frequency setting.
Connect a resistor (R) between this pin and VREG and a
capacitor (C) between this pin and ground. Values of R = 22
kΩ, and C = 4700 pF set a frequency of about 19 kHz.
Equivalent circuit
21 GND1 Ground (blocks other than the output block)
22 IN1+ Hall inputs
23 IN1– An input with IN+ > IN– is taken to be a high level, and the
24 IN2+ opposite state is taken to be a low level. Hall signals with
25 IN2– amplitudes greater that 100 mVp-p (differential) are desirable.
26 IN3+ If noise on the Hall signals is a problem, connect capacitors
27 IN3– between the IN+ and IN– pins.
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 July, 1999. Specifications and information herein are subject to
change without notice.
PS No. 5687-11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LB1924.PDF ] | |
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