Ordering number : EN8777A Monolithic Linear IC LA6585T BTL Drive Single-Phase Full-Wave Fan Motor Driver Overview The LA6585T is a single-phase bipolar fan motor driver that achieves quite operation, power savings, silent operation and high efficiency that suppresses reactive current through BTL output linear drive. It provides lock protection and rotation signal circuits on chip, and is optimal for applications that require high reliability and low noise, such as notebook personal computers, power supplies in consumer electronic equipment, car audio, and CPU cooling systems. Features • BTL output single-phase full-wave linear drive (gain resistor : 1 to 360kΩ, 51dB) • Supports low-voltage drive and features a wide usable voltage range (2.2 to 14.0V) • Low saturation output (high side + low side saturation voltage : Vosat (total) = 1.2V (typical), IO = 250mA) • Built-in lock protection and automatic return circuits • Built-in FG output • Built-in Hall sensor bias (VHB = 1.5V) • Thermal protection circuit • Small-sized, high thermal capacity package Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC max 15 V Output current IOUT max 0.5 A Output voltage VOUT max 15 V VFG max 15 V 10 mA FG output pin oiutput withstand voltage FG output current IFG max Continued on next page. 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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. 53007 MS IM / 31407 TI PC B8-6877 No.8777-1/4 LA6585T Continued from preceding page. Parameter Symbol Allowable power dissipation Pd max Conditions Ratings Unit When mounted on a circuit board *1 400 mW Operating temperature Topr -30 to +90 °C Storage temperature Tstg -55 to +150 °C *1 Specified circuit board : 114.3 × 76.1 × 1.6mm3, glass epoxy. Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 2.2 to 14.0 V Common-phase input voltage VICM 0 to VCC -1.5 V range of hall input Electrical Characteristics at Ta = 25°C, VCC = 12V, Unless otherwise specified. Parameter Symbol Ratings Conditions min Circuit current Lock detection capacitor charge ICC1 Drive mode (CT = low) ICC2 Lock protection mode (CT = high) max 6 9 mA 2.5 5 7.5 mA 0.9 1.2 1.5 µA 0.10 0.18 0.25 µA 5 6.5 8 3 ICT1 Unit typ current Capacitor discharge current ICT2 Capacitor charge/discharge current RCT RCD = ICT1/ICT2 ratio CT charge voltage VCT1 1.3 1.5 1.7 CT discharge voltage VCT2 0.3 0.5 0.7 V V OUT output low saturation voltage VOL IO = 200mA 0.25 0.45 V OUT output high saturation voltage VOH IO = 200mA 0.95 1.2 V Hall input sensitivity VHN Zero peak value (including offset and 7 15 mV FG output pin low-level voltage VFG IFG = 5mA 0.15 0.3 V FG output pin leakage current IFGL VFG = 15V 1 30 µA hysteresis) Package Dimensions 3.0 0.5 3.0 4.9 8 2 0.65 0.125 1.1MAX (0.85) 0.25 500 Pd max – Ta Specified circuit board : 114.3×76.1×1.6mm3 glass epoxy board 400 300 192 200 100 0 – 30 0 30 60 90 120 Ambient temperature, Ta – °C 0.08 1 (0.53) Allowable power dissipation, Pd max – mW unit : mm (typ) 3245B SANYO : MSOP8(150mil) No.8777-2/4 LA6585T Truth Table IN− IN+ CT OUT1 OUT2 FG High Low Low High Low Low Low High Low High High − − Off Off − High Mode During rotation Lock protection Pin Assignment IN+ FG IN− VCC LA6585T OUT2 CT GND OUT1 Top view Application Circuit Example Di *3 Cr *1 VCC R2 *FG *2 H R2 *4 IN− OUT1 IN+ OUT2 CT GND Circuit board mounted components *1. If the diode Di (which protects the IC destruction by reverse connection) is used, it is necessary to insert the capacitor Cr and provide a regenerative current route. Similarly, if there is no nearby capacitor on the fan power supply line, Cr will also be necessary to improve reliability. *2. If the Hall sensor bias is taken from VCC, a 1/2 VCC bias, as shown in the figure, must be used. Linear drive is implemented by amplifying the Hall sensor output and applying voltage control to the coil. If the Hall effect sensor provides a strong output, the startup characteristics and efficiency will be good, then even quieter operation will be achieved by adjusting the Hall effect sensor. *3. This pin must be left open if unused. *4. If the line from the Hall sensor output to the Hall sensor input of IC are long, noise may enter the system from that line. If that becomes a problem, insert a capacitor as shown in the figure. No.8777-3/4 LA6585T Internal Equivalent Circuits VCC IN+ OUT1 H OUT2 IN− GND FG Control circuit Charge/discharge circuit Discharge pulse CT = 0.47 to 1µF 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 May, 2007. Specifications and information herein are subject to change without notice. PS No.8777-4/4