Ordering number : ENA0505A Monolithic Linear IC LA6588M 24V power supply, BTL output linear drive Single-phase Fan Motor IC Overview The LA6588M is a Single-phase bipolar fan motor IC for 24V power supply. BTL output linear drive ensures highly-efficient, energy-saving, and silent drive while suppressing the ineffective current. Lock protection and lock signal circuit are incorporated, proving most suitable for consumer equipment power supply, OA equipment and car audio system, etc which require high reliability and low noise. Functions • Single-phase full-wave linear drive by BTL output (gain resistance 500 to 360k, 57dB) : No switching noise, which is most favorable for use in equipment requiring silent operation, such as consumer equipment power supply, car audio system, etc. • Operable at low voltage and over a wide operation voltage range (8 to 26.4V) • Low saturation output (Upper + lower saturation voltages: VOsat (total) = 1.1V typ, IO = 200mA) : High coil efficiency and small current drain. Small heat generation from IC itself • Lock protection and automatic return circuits incorporated • Lock protection signal output (L during rotation, H at stop, open collector output) • Output (Rotation detection output: Open collector output) • Hall bias incorporated (VHB = 1.5V) • Heat protection circuit :The heat protection circuit suppresses the drive current to prevent burn or damage of IC when the large current flows due to output short-circuit and the IC chip temperature exceeds 180°C. • Small package with high heat capacity (MFP10S) Pin- compatible silent series (5V/12V/24V products) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC max 28 V Output current IOUT max 0.8 A Output withstand voltage Output withstand voltage of VOUT max 28 V VRD/FG max 28 V RD/FG output pin RD/FG output current HB output current IRD/FG max 5 mA IB max 10 mA Continued on next page. ■ 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. 82206 MS PC / 81006 MS PC B8-9093 No.A0195-1/5 LA6588M Continued from preceding page. Parameter Symbol Conditions Allowable dissipation Pd max Mounted on a specified board. * Ratings Unit 800 mW Operating temperature Topr -30 to +90 °C Storage temperature Tstg -55 to +150 °C * Mounted on a specified board: 114.3×76.1×1.6 mm3, glass epoxy board. Recommended Operating Conditions at Ta = -30 to +90°C Parameter Symbol Ratings Conditions min typ Unit max Supply voltage VCC 8 26.4 V Common-phase input voltage VICM 0 VCC–1.5 V range of Hall input Electrical Characteristics at Ta = 25°C, VCC = 24V, unless otherwise specified. Parameter Symbol Circuit Current Lock detection capacitor Ratings Conditions ICC1 During drive (CT = L) ICC2 During lock protection (CT = H) min typ 4.5 ICT1 Unit max 7 9.5 mA 2.5 4.5 6.5 mA 2.0 2.7 3.5 µA 0.15 0.23 0.30 µA 10 12 14 charge current Capacitor discharge current ICT2 Capacitor charge and RCT RCD = ICT1/ICT2 discharge current ratio CT charge voltage VCT1 1.55 1.7 1.8 V CT discharge voltage VCT2 0.65 0.75 0.85 V OUT output L saturation VOL IO = 200mA 0.2 0.3 V VOH IO = 200mA 0.9 1.2 V VHN Zero peak value (including offset and hysteresis) voltage OUT output H saturation voltage Hall input sensitivity 7 mV RD/FG output pin L voltage VRD/FG IRD/FG = 5mA 0.2 0.3 V RD/FG output pin leak current IRD/FG VRD/FG = 15V 1 3 µA 1.5 1.7 V VHB HB output voltage IHB = 5mA 1.3 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 -:Don’t care. No.A0505-2/5 LA6588M Package Dimensions unit : mm (typ) 3086B Pd max -- Ta 10 0.63 5.0 1.7max 4.4 6.4 6 5 0.15 0.1 (1.5) 1 Allowable power dissipation, Pd max -- W 1.0 0.35 1.0 Mounted on specified board: 114.3×76.1×1.6mm3 glass epoxy board. 0.8 0.6 0.4 0.384 0.2 0 -30 (0.5) 0 30 60 Ambient temperature, Ta -- °C SANYO : MFP10S(225mil) 90 120 MSG06804 Pin Assignment IN+ 1 10 RD HB 2 9 FG IN- 3 8 VCC CT 4 7 OUT2 OUT1 5 6 GND LA6588M Top View No.A0505-3/5 LA6588M Block Diagram VCC AMP Power supply 1.5V REG HB IN+ OUT1 H OUT2 IN- GND FG Control circuit Charge discharge RD Discharge pulse CT CT=0.47 to 1µF Application Circuit Examples Di *4 Cr VCC RD *1 R1 *2 H HB FG IN- OUT1 IN+ OUT2 HB *5 *3 H CT IN- GND IN+ No.A0505-4/5 LA6588M *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: When taking Hall bias from VCC, carry out bias to VCC with resistor R1 as shown in the figure. Linear drive is achieved through voltage control of the coil by amplifying the Hall output. With large Hall element output, the start performance and efficiency are improved. Noise can be reduced further by adjusting the Hall element. *3: When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 1.5V. Therefore, the Hall element can provide the output satisfactory in temperature characteristics. *4: Keep this open when not using. *5: 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. 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, of 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, 2006. Specifications and information herein are subject to change without notice. PS No.A0505-5/5