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Ordering number:EN3664A
Monolithic Digital IC
LB1657M
2-Phase Stepping Motor Driver
Overview
The LB1657M is a dual bridge driver IC suited for use in 2-phase bipolar stepping motor driver for FDD (3 to 5.25 inches) head actuator. The maximum driver currentxvoltage is 0.33Ax12V/ bridge.
Package Dimensions
unit:mm 3097-MFP16FS
[LB1657M]
Features
* Power save function. * o1, o2 direction inputs are used to make driver output selection. * Low saturation voltage. * Low current drain. * Direct controllable from MPU due to low input current. * Input level : TTL, LSTTL, 5V CMOS compatible. * On-chip thermal shutdown (TSD) circuit.
SANYO : DMFP16FS
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Logic section supply voltage Seeking supply voltage Input voltage Peak seeking current Continuous seeking current Allowable power dissipation Operating temperature Storage temperature Symbol VCC VS VIN IO peak IOS Pd max Topr Tstg t5ms Conditions Ratings 7 15 0 to VCC 500 330 0.9 -20 to 70 -55 to +125 Unit V V V mA mA W
C C
Allowable Operating Conditions at Ta = 25C
Parameter Logic section supply voltage Seeking supply voltage Symbol VCC VS Conditions Ratings min 4.5 10.2 typ 5.0 12.0 max 5.5 13.8 Unit V 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
82098HA (KT)/5231TS (KOTO)/5310TA (KOTO) No.3664-1/4
LB1657M
Electrical Characteristics at Ta = 25C, VCC=5V, VS2=5V, VS1=12V
Parameter Input low-level voltage Input high-level voltage Input low-level current Input high-level current Current drain Symbol VIL VIH IIL IIH ICL ISL ICH ISH Output transistor voltage VS1 saturation voltage Clamp voltage Delay time TSD operating temperature TSD hysteresis VCER Vsat VF tPLH tPHL TSD T VI=0.8V VI=2V VI=5V STB=0.8V, VCC STB=0.8V, VS, Note1 STB=2.0V, VCC STB=2.0V, VS, Note1 IC=10mA SB=0.8V, IO=330mA, Note2 IF=330mA, upper IF=330mA, lower 18 1.5 3 1.5 4 2 150 25 2.0 Conditions Ratings min 2.0 -10 6 0.55 25 25 5 +10 10 1.0 33 1 33 10 typ max 0.8 Unit V V A A mA mA mA mA mA V V V V s s C C
Note : 1. Measure sum of currents at pins 4 and 13. 2. Measure sum of saturation voltages at upper and lower level.
Equivalent Circuit Block Diagram
The o1, o2 direction inputs are used to make driver output selection and the power save input is used to select the driver source output from between 0V supply and 12V supply.
No.3664-2/4
LB1657M
Pin Assignment Specified board
(Top view)
Sample Application Circuit : 2-phase bipolar stepping motor driver.
Note : Keep the tarminal to short 4 and 13
Timing Chart
No.3664-3/4
LB1657M
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.3664-4/4

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