Ordering number : EN8774B LA6581M Monolithic Linear IC Fan Motor Driver BTL Driver Single-Phase Full-Wave Overview The LA6581M is a low-saturation BTL output linear driving motor driver for single-phase bipolar fan motors. It features quite, low power, high efficiency drive that suppresses reactive current. It is optimal for use in applications that require miniaturization and low noise, such as CPU cooling fan motors and 5 to 12V electronic game products. Functions • Single-phase full-wave linear drive with BTL output (gain resistance 500Ω to 284kΩ, 55dB) : Suitable for the equipment requiring silent operation, such as game equipment, CPU cooler, etc. because of its freedom from switching noise. • Low-voltage operation possible, with wide operable voltage range (3 to 16V) • Low saturation output (Upper + lower saturation voltage : VOsat (total) = 0.3V typ, IO = 100mA) : High coil efficiency with low current drain. IC itself does not generate much heat. • High impedance of Hall input pin • FG output (rotation speed detection output : open collector output) • Heat protection circuit : When the large current flows because of output short-circuit, raising the IC chip temperature above 180°C, the heat protection circuit suppresses the drive current, preventing IC burn and breakdown. • Small package (MFP8 : 5.0mm×6.4mm×1.6mm typ) : Small substrate while allowing larger blades. Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Supply voltage VCC max OUT output current IOUT max OUT output withstand voltage FG output withstand FG output current Conditions Ratings Unit 18 V 0.50 A VOUT max 18 V VFG max 18 V IFG max 5 mA T<200ms Continued on next page. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. 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. 30409 MS / 32807 TI IM B8-8743 No.8774-1/4 LA6581M Continued from preceding page. Parameter Symbol Conditions Ratings Allowable power dissipation Pd max Mounted on a specified board *1 Operating temperature Topr *2 Storage temperature Tstg Unit 800 mW -30 to +100 °C -55 to +150 °C *1: Specified board: 114.3mm × 76.1mm ×1.6mm, glass epoxy board *2: Tj = 150°C max must not be exceeded. Recommended Operating Conditions at Ta = 25°C Parameter Symbol Supply voltage VCC Common-phase input voltage range of VICM Conditions Ratings Unit 2.2 to 16 V 0.3 to VCC-1.5 V Hall input Electrical Characteristics at Ta = 25°C, VCC = 12.0V, unless especially specified. Parameter Symbol Ratings Conditions min Unit Typ Max Circuit Current ICC IN- = 5.8V, IN+ = 6.0V, RL = ∞ 14 19 mA OUT output low voltage VOL IO = 100mA 0.1 0.2 V OUT output high voltage VOH IO = 100mA 0.1 0.2 V Hall bias voltage VHB RH = 360Ω +91Ω 1.85 1.95 2.05 V Hall amplifier gain Vg 52 55 58 dB Hall amplifier input current VINR -2 +10 µA FG output low voltage VFG IFG = 3mA 0.2 0.3 V FG output leakage current IFGL VFG = 7V 30 µA Thermal protection circuit Th * Design guarantee 200 °C -10 150 180 *: These values are design guarantee values, and are not tested. Truth Table IN- IN+ OUT1 OUT2 FG H L H L L L H L H Off - - Off Off - mode During rotation During overheat protection Package Dimensions unit : mm (typ) 3032D 0.63 4 0.15 1.7max 0.35 (1.5) 1.27 Mounted on a specified board: 114.3mm×76.1mm×1.6mm, glass epoxy 800 700 600 500 400 320 300 200 100 0 -30 0.1 1 (0.65) Allowable power dissipation, Pd max - mW 5 4.4 6.4 8 Pd max - Ta 900 5.0 0 30 60 Ambient temperature, Ta - °C 90 100 120 ILA07055 SANYO : MFP8(225mil) No.8774-2/4 LA6581M Pin Assignment IN+ 1 8 FG 7 VCC HB 2 LA6581M IN− 3 6 OUT2 OUT1 4 5 GND Top view Block Diagram VCC FG 2.0VRG HB IN+ H OUT1 OUT2 IN- GND Timing Chart Hall Signal OUTPUT Coil Current FG Pulse No.8774-3/4 LA6581M Application Circuit Example Di Cr *4 VCC *1 R2 *3 LA6581M *2 H HB FG HB IN− OUT1 IN+ OUT2 IN− H IN+ *5 R2 GND R1 Elements in substrate *1 : When Di to prevent breakdown in case of reverse connection is used, it is necessary to insert a capacitor Cr to secure the regenerative current route. Similarly, Cr is necessary to enhance the reliability when there is no capacitor near the fan power line. *2 : To obtain Hall bias from VCC, carry out 1/2 × VCC bias as shown in the figure. Linear driving is made through voltage control of the coil by amplifying the Hall output. When the Hall element output is large, the startup performance and efficiency are improved. Adjustment of the Hall element can reduce the noise further. *3 : When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 2.0V. Therefore, the Hall element can provide the output satisfactory in temperature characteristics. Adjustment of the Hall output amplitude is made with R1. (When VCC = 12V, the step *2 above proves advantageous for IC heat generation.) *4 : Keep this open when not used. *5 : When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring. SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor 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 Semiconductor Co.,Ltd. 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. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of March, 2009. Specifications and information herein are subject to change without notice. No.8774-4/4