Ordering number : ENN6188A LB1964T Monolithic Digital IC LB1964T Fan Motor Single-Phase Full-Wave Driver Overview Package Dimensions The LB1964T is a driver for single-phase bipolar drive fan motors that features compact and low-profile MSOP–8 package. Low-saturation output and low-voltage operation make it ideal for applications that require small size and high efficiency, such as notebook computers and CPU cooling fans. unit: mm 3245-MSOP8 [LB1964T] 3.0 5 1 4 3.0 4.9 0.5 8 Features • Single-phase full-wave drive • Low-voltage operation (VCC = 2.0V min.) • Low-saturation output (upper side + lower side saturation voltage: Vosat (total) = 0.3V typ., Io = 100 mA) • Ultraminiature package (3.0 × 4.9 × 0.93 mm3) • FG output • Built-in thermal protection circuit 0.25 0.25 0.08 (0.85) 1.1max 0.65 (0.5) SANYO : MSOP8 Specifications Absolute Maximum Ratings at Ta = 25˚C Parameter Maximum supply voltage Allowable power dissipation OUT output current OUT output withstand voltage FG output withstand voltage FG output current Operating temperature Storage temperature Symbol Conditions VCC max Pd max With specified substrate* IOUT max VOUT max VFG max IFG max Topr Tstg Ratings 9 370 0.3 9 7 5 –20 to +85 –55 to +150 Unit V mW A V V mA ˚C ˚C * Specified substrate (20.0 × 10.0 × 0.8 mm3 paper phenol) Allowable Operating Ranges at Ta = 25˚C Parameter Power supply voltage Hall input common mode input voltage range Symbol VCC VICM Conditions Ratings 2 to 8 0.2 to VCC–1 Unit V V Any and all SANYO 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 representative nearest you before using any SANYO products described or contained herein in such applications. SANYO 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 products described or contained herein. SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN O2599RM(KI) No. 6188-1/4 LB1964T Electrical Characteristics at Ta = 25˚C, VCC = 3.3V, unless otherwise specified Parameter Symbol Current drain OUT output Low saturation voltage OUT output High saturation voltage Hall bias voltage Hall input sensitivity FG output Low voltage FG output leak current Thermal protection operating temperature Ratings typ 3 0.2 0.2 1.17 1.27 1 0.2 Conditions Icc VOL VOH VHB VHN VFG IFGL TTSD min IO = 100 mA IO = 100 mA RH = 360Ω Zero peak value IFG = 3 mA VFG = 7V Assured design target* 150 180 max 4.5 0.3 0.3 1.37 7 0.3 30 200 Unit mA V V V mV V µA ˚C * Assured design target: Target value, not measured individually Truth Table IN– IN+ OUT1 OUT2 FG Mode H L – L H – H L Off L H Off L Off – Rotating In thermal protection Pd max – Ta Allowable power dissipation, Pd max – W 0.6 With specified substrate (20.0 × 10.0 × 0.8 mm3) paper phenol 0.4 0.37 0.19 0.2 0 –20 0 20 40 60 80 100 Ambient temperature, Ta – ˚C Pin Assignment IN+ 1 8 FG HB 2 7 V CC LB1964T IN– 3 6 OUT2 OUT1 4 5 GND Top view No. 6188-2/4 LB1964T Sample Application Circuit Di Cr ∗1 V CC FG HB ∗2 H ∗3 IN– OUT1 IN+ OUT2 GND *1 When a diode is used to protect the IC from destruction in case of reverse connection, the capacitor Cr must be inserted to provide a regenerative current route. Similarly, a capacitor is needed in the power supply line, even if no diode is used. *2 The Hall element is supplied with a constant-voltage bias of approx. 1.27V from the HB pin. This ensures stable output with good temperature characteristics from the Hall element. Because the LB1964T incorporates a Hall amplifier with low offset, it provides coil output with a stable duty. *3 The Hall amplifier does not have a hysteresis characteristic. The OUT1 and IN– pins are at the same phase, and by arranging the two pins next to each other, chatter during phase switching is prevented. However, if the wiring leading to the IN– pin is long, some noise interference may occur. In such a case, the following steps should be considered: (1) Arrange parts layout with priority to proximity of Hall element and IC, to allow short Hall element output wiring. (2) Insert a resistor of about 10 to 100 kΩ between OUT1 and IN– to create a hysteresis characteristic. Block Diagram FG VCC HB Constant voltage circuit Delay circuit IN+ OUT2 Control circuit HALL M Delay circuit IN– OUT1 Thermal protection circuit GND No. 6188-3/4 LB1964T VO(sat) – IO HB – VCC 2.0 VCC = 3V Tc = 25˚C 1.8 0.8 1.6 Hall bias voltage, HB – V Output saturation voltage, VO(sat) –V 1.0 Upper + lower side 0.6 Lower side 0.4 Upper side 0.2 RH = 560Ω 1.4 1.2 240Ω 360Ω 1.0 0.8 0.6 0.4 0.2 0 0 100 200 300 400 0 0 1 2 3 4 5 6 7 8 9 10 Power supply voltage, VCC – V Output current, IO – mA ICC – VCC 10 Ta = 25˚C RH = 360Ω Current drain, ICC – mA 8 IN– = L IN+ = L 6 IN– = L IN+ = L 4 2 0 0 1 2 3 4 5 6 7 8 9 10 Power supply voltage, VCC – V Specifications of any and all SANYO 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 Electric 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 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 Electric 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 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 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 October, 1999. Specifications and information herein are subject to change without notice. PS No. 6188-4/4