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Ordering number:EN3381
Monolithic Digital IC
LB1684
3-Phase DD Motor Driver
Overview
The LB1684 is a 3-phase DD motor driver IC ideally suited for use in low-supply VCR capstan motor drive, drum motor drive, and floppy disk motor drive applications.
Package Dimensions
unit:mm 3037A-DIP20H
[LB1684]
Features
* Designed for 5V-supply control system. * Voltage-control system/current-control system available. * Speed control available. * Bidirectional control available. * 20V/1.5A rating.
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC1 VCC2 IO Pd max Topr Tstg Conditions
SANYO : DIP20H
Ratings 22 7 1.5 2.2 -20 to +75 -55 to +125
Unit V V A W
C C
Allowable Operating Conditions at Ta = 25C
Parameter Supply voltage Symbol VCC1 VCC2 Conditions Ratings 7.0 to 2.0 4.3 to 6.3 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
83198HA (KT)/3290TA, TS No.3381-1/4
LB1684
Electrical Characteristics at Ta = 25C, VCC1=12V, VCC2=5.0V
Parameter Supply current Output saturation voltage Common-mode input voltage range Motor forward rotation input voltage range Motor reverse rotation input voltage range Interphase current variation Speed control voltage (OFF) Speed control voltage (ON) Closed-Loop voltage gain Input sensitivity VC1 VC2 VC3 Driver stage Output stage Rf=0, RS=0, FC pin GND current 5A Rf=0, RS=0, FC pin GND current 0.5mA Rf=1, RS=100, VRf=100mV Rf=1, RS=100, IL=100mA Hall input Symbol ICC (off) ICC (dri) VO (sat)1 VO (sat)2 Conditions VC=0V, ICC1+ICC2 VC=4V, ICC2 IOUT=0.58A sink+source IOUT=1A sink+source 1.3 2.0 0 -25 -25 2.38 2.7 0.44 20 0 0 Ratings min typ 13 20 1.4 2.0 max 18 40 2.1 3.5 VCC2 -1.3 VCC2 0.3 +25 +25 2.1 2.58 Unit mA mA V V V V V % % V V V A/V mV peak
Pin Assignment
Top view
Equivalent Circuit Block Diagram
No.3381-2/4
LB1684
Truth Table
Pin Description
Pin name UIN1, UIN2 VIN1, VIN2 WIN1, WIN2 UOUT VOUT WOUT VCC1 VCC2 Rf CD Pin No. 13, 14 15, 16 17, 18 3 2 1 4 19 20 10 Description U phase Hall element input pin. High of logic : VIN1>VIN2 V pahse Hall element input pin. High of logic : VIN1>VIN2 W pahse Hall element input pin. High of logic : VIN1>VIN2 U phase output pin V phase output pin W phase output pin Power supply pin for applying output Power supply pin for applying voltage to each section other than output section. The control point of control voltage is at approximately 1/2 of this voltage. This voltage must be stabilized to be free from ripple, noise, etc. Output current detect pin. By connectiong Rf across this pin and GND pin, output current is detected as voltage. Pin for fetching current (voltage) detected with Rf. By connecting a resistor across CD pin and Rf pin, speed control start votlage can be fine-adjusted. Overcurrent protection pin. Voltage being lower than that on CD pin is taken to be identical to overcurrent flow, causing output to be cut off. For example, if STOP pin is set to 1.5V for Rf=1, approximately 1.5A or more flows at output, causing output to be cut off. Ferquency characteristic compensation pin. Closed-loop oscillation in curent-controlled system (including motor, F-V converter) is stopped. Speed/phase control pin. Control starts at approximately 1/2 of VCC2. Control is of current-controlled type that controls output current. For Rf=1, LB1684 closed-loop has gm=0.44A/V typ, which can be adjusted by varying Rf. GND for other than output. Minimum potential ot current transistor is at Rf pin. Forward/reverse control pin. By setting this pin to high (more than 2.0V)/low (less than 0.3V), truth value is changed to perform forward/reverse rotation.
STOP FCU FCV FCW VC GND F/R
9 5 6 7 11 8 12
No.3381-3/4
LB1684
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.3381-4/4

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