Ordering number : ENA0007 Monolithic Linear IC LA6584 BTL Driver Single-Phase Full-Wave Fan Motor Driver Overview The LA6584 is Single-phase bipolar fan motor is put into silent driving by means of BTL output linear drive, offering high efficiency and power saving by suppressing the reactive current. Lock protection and rotation signal (FG, RD) circuits are built in, ensuring optimum application to small fans for notebook PC, consumer equipment power supply, car audio system, CPU cooler, etc. that require high reliability and low noise. Functions and Applications • Single-phase full-wave driver for fan motor Specitications Absolute Maximum Ratings at Ta = 25°C Parameter Output voltage Symbol Conditions Ratings VCC max Allowable dissipation Pd max Mounted on a specified board* Unit 15 V 1.1 W Output current IOUT max 1.2 A Output withstand voltage VOUT max 15 V RD/FG output pin output VRD/FG max 15 V IRD/FG max 5 mA Withstand voltage RD/FG output current HB output voltage 10 mA Operating temperature range IB max Topr -30 to +90 °C Storage temperature range Tstg -55 to +150 °C *Mounted on a specified board (114.3×76.1×1.6mm, Glass epoxy) Recommended Operating Range at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 2.8 to 14.0 V Common-phase input voltage VICM 0 to VCC-1.5 V Range of Hall input Any and all SANYO Semiconductor 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 Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 products described or contained herein. 92706 / 81005 SY PC B6-6875 No.A0007-1/5 LA6584 Electrical Characteristics at Ta = 25°C, VCC = 12V, unless especially specified. Parameter Symbol Ratings Conditions min Circuit current typ Unit max ICC1 During drive (CT = L) 4 6 9 mA ICC2 During lock protection (CT = H) 2 4 6 mA Lock detection capacitor charge current ICT1 2.0 2.8 3.5 µA Capacitor discharge current ICT2 0.15 0.23 0.30 µA Capacitor charge and discharge current ratio RCT 9 12 15 - CT charge voltage VCT1 1.6 1.7 1.8 V CT discharge voltage VCT2 0.6 0.7 0.8 V OUT output L saturation voltage VOL IO = 200mA 0.2 0.3 V OUT output H saturation voltage VOH IO = 200mA 0.9 1.2 V Hall input sensitivity VHN Zero peak value 7 15 mV RD/FG output pin L voltage VRD/FG 0.1 0.2 V 1 30 µA 1.5 1.7 V RCD = ICT1/ICT2 (including offset and hysteresis) IRD/FG = 5mA RD/FG output pin leak current IRD/FGL VRD/FG = 15V HB output L voltage VHBL IHB = 5mA 1.3 Package Dimensions unit : mm 3313 8 1 7 0.22 0.5 4.4 14 6.4 6.5 1.3 0.15 0.65 1.5 0.1 (1.3) 1.5max (2.35) SANYO : HSSOP14(225mil) No.A0007-2/5 LA6584 Truth Table IN- IN+ CT OUT1 H L L H L H L - - OFF OFF - H OUT2 FG RD Mode L L L During rotation H H H During overheat protection Pin Assignment F-GND F-GND OUT2 1 14 OUT1 (NC) 2 13 (NC) VCC 3 12 CT (NC) 4 11 IN- FG 5 10 HB RD 6 9 IN+ NC 7 8 (NC) LA6584 Top view No.A0007-3/5 LA6584 Sample Application Circuit Di Cr *4 *1 VCC R2 FG HB H *2 RD OUT1 IN- HB OUT2 IN+ R1 R2 *5 CT GND *3 H IN- On board element IN+ *1 *2 *3 *4 *5 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. 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. 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.) Keep this open when not used. When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring. In this case, insert the capacitor as shown in the figure. No.A0007-4/5 LA6584 Internal Equivalent Circuit VCC 1.5VRG HB H IN+ OUT1 OUT2 IN- GND FG Control Circuit Charge/discharge circuit RD Discharge pulse CT = 0.47 to 1µF Specifications of any and all SANYO Semiconductor 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 Semiconductor 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 Semiconductor 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 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 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 Semiconductor 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, 2005. Specifications and information herein are subject to change without notice. PS No.A0007-5/5