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Ordering number:EN3473
Monolithic Digital IC
LB1673M
3-Phase Brushless, Sensorless Motor Driver
Applications
Rotational control of brushless motors for use in audio applications such as headphone stereos, micro-cassette recorders, mini-cassette recorders.
Package Dimensions
unit:mm 3112-MFP24S
[LB1673M]
Function and Features
* Brushless, sonsorless motor drive (3-phase half-wave drive). * Bidirectional motor drive. * On-chip speed control function (V servo type). * On-chip reference votlage. * On-chip one comparator (PNP input, NPN open collector output).
SANYO : MFP24S
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Output Transistor Breakdown votlage Output current Allowable power dissiaption Operating temperature Storage temperature Symbol VCC max VSUS max IM Pd max Topr Tstg Conditions Ratings 5 10 1 0.58 0 to +80 -40 to +125 Unit V V A W
C C
Allowable Operating Conditions at Ta = 25C
Parameter Supply voltage Symbol VCC Conditions Ratings 1.0 to 3.5 Unit V
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 Bussiness Headquaters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
83198HA (KT)/5280TA No.3473-1/4
LB1673M
Electrical Characteristics at Ta = 25C
Parameter Supply current 1 Supply current 2 Reference votlage Voltage characteristic of reference voltage Load characterisric of reference voltage Temperature characteristic of reference voltage Speed signal detection accuracy Speed signal correlation error Voltage characteristic of speed signal Temperature characteristic of speed signal Current detection accuracy Current detection ratio Pin OSC flow-out current Starting pulse width COM pull-in current Output saturation votlage Logic input high-level voltage Logic input low-level votlage Comparator offset votlage Comparator output current Symbol ICC(L) ICC(H) START pin low START pin high 0.49 Conditions Ratings min typ 0 4.8 0.52 0.3 -0.03 0 135 -5 145 0.2 0 50 0.14 2.6 20 0.9 0.3 -10 VCC=1V, OUT1=VCC 100 +10 65 0.17 3.8 60 30 0.09 40 0.25 80 0.25 5.0 A ms A V V V mV A 155 5 1.0 max 10 10 0.55 1.0 Unit mA A V %/V mV/A
Vref Vref VCC=1 to 3.5V Vref/VCC Vref Iref=0 to -60A Iref Vref Ta=0 to +80C /Ta Vref Vsp VIN=500mV
%/C
mV % %/V
Vsp /V V =1 to 3.5V CC CC Vsp Vsp /Ta Ta=0 to +60C Vsp
VRI KI IOSC TOSC VCOM Vsat VH VL VOFF IOFF VIN1=0.3V, VIN2=1V VIN2=1 to 1.3V Measured as pin OSC is 0.4V CS=0.47F Short VCC with COM VCC=1V, Im=0.2A
%/C
mV
Equivalent Circuit Block Diagram
No.3473-2/4
LB1673M
Sample Peripheral Circuit Pin Assignment
Top view
Unit (resistance : , capacitance : F)
Pin Description
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Pin name GND V PW DW W DR Vref START Vsp IN OUT GND RI IN1 IN2 OUT1 OSC COM VCC PU DU U PV DV GND pin for the whole circuit. V phase output pin W phase output drive transistor base W phase output transistor base W phase output pin
Make the capacitance of the oscillation blocking capacitor (C 1 ) in the output section as small as possible and the capacitance of C2 as large as possible. If the capacitance of the capacitor in the output section is large and the capacitance of CS is small, the starting votlage may rise at low temperatures. In 3V-use, reverse rotation of a motor would not be well, consider the resistance of Rcom.
Description
Pin for selecting the direction of rotation (H : forward) Reference voltage (0.5V) High active Speed signal (induced voltage) detection Speed signal error amp reference input Speed signal error amp output. The motor current is fed back. GND pin for logic circuiit. Pin for detecting the motor current input of internal comparator (PNP base input) input of internal comparator (PNP base input) Output of internal comparator (NPN open collector) Pin for setting the starting pulse width Pin for providing a supplementary function for the current control circuit at the time of start or selection of direction of rotation Power supply pin U phase output drive transistor base U phase output transistor base U phase output pin V phase output drive transisitor base V phase output transistor base
No.3473-3/4
LB1673M
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 and all SANYO products described or contained herein fall under strategic products (including services) controlled under the Foreign Exchange and Foreign Trade Control Law of Japan, such products must not be exported without obtaining export license from the Ministry of International Trade and Industry 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 August, 1998. Specifications and information herein are subject to change without notice.
PS No.3473-4/4

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