LA6581T

Ordering number : EN7192B Monolithic Linear IC LA6581T Overview Fan Motor Driver BTL Driver Single-Phase Full-Wave The LA6581T 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. • Ultraminiature package (MSOP8: 3.0mm×4.9mm×0.93mm typ) : Small substrate while allowing larger blades. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Output current Output withstand voltage FG output withstand FG output current Symbol VCC max IOUT max VOUT max VFG max IFG max Conditions Ratings 18 0.30 18 18 5 Unit V A V V mA 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 / 60607 MS IM B8-5218 / N2502AS (OT) No.7192-1/4 LA6581T Continued from preceding page. Parameter Allowable power dissipation Operating temperature Storage temperature Symbol Pd max Topr Tstg Conditions Ratings 400 -20 to +90 -55 to +150 Unit mW °C °C * Specified board: 20.0mm × 10.1mm × 0.8mm, Paper phenol, wiring density 20%. Recommended Operating Ratings at Ta = 25°C Parameter Supply voltage Common-phase input voltage range of Hall input Symbol VCC VICM Conditions Ratings 2.5 to 16 0.3 to VCC-1.5 Unit V V Electrical Characteristics at Ta = 25°C, VCC = 12.0V, unless especially specified. Parameter Circuit current OUT output low voltage OUT output high voltage Hall bias voltage Hall amplifier gain Hall amplifier input current FG output low voltage FG output leakage current Thermal protection circuit Symbol ICC VOL VOH VHB Vg VINR VFG IFGL Th IFG = 3mA VFG = 7V * Design guarantee 150 180 Conditions min IN- = 5.8V, IN+ = 6.0V, RL = ∞ IO = 100mA IO = 100mA RH = 360Ω+91Ω 1.85 52 -10 Ratings typ 14 0.1 0.1 1.95 55 -2 0.2 max 19 0.2 0.2 2.05 58 10 0.3 30 200 mA V V V dB µA V µA °C Unit * Design guarantee : Design target. Measurement with a single unit not made. Package Dimensions unit : mm (typ) 3245B 500 Pd max - Ta Specified board 3.0 8 Allowable power dissipation, Pd max - mW 400 300 3.0 4.9 0.5 200 192 1 (0.53) 2 0.65 0.25 1.1MAX (0.85) 100 0.125 0 --20 Mounted on a board: 20×10×0.8mm3, paper phenol 0 20 40 60 80 90 100 Ambient temperature, Ta - °C SANYO : MSOP8(150mil) Truth Table INH L − IN+ L H − OUT1 H L off OUT2 L H off FG L off − During rotation During overheat protection Mode 0.08 No.7192-2/4 LA6581T Pin Assignment IN+ 1 HB 2 IN− 3 OUT1 4 Top view 8 FG 7 VCC LA6581T 6 OUT2 5 GND Block Diagram VCC FG 2.0VRG HB H ININ+ OUT1 OUT2 GND Timing Chart Hall Signal OUTPUT Coil Current FG Pulse No.7192-3/4 LA6581T Application Circuit Example Di *1 Cr VCC *4 R2 HB FG HB *3 IN− LA6581T *2 H IN− IN+ *5 R2 GND OUT1 H OUT2 R1 IN+ 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 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. PS No.A0706-4/4