Ordering number : ENN6189 LB1965M Monolithic Digital IC LB1965M Two-Phase Unipolar Driver for Variable-Speed Fan Motor Features Package Dimensions • With only a few peripheral parts including a thermistor, ambient temperature dependent continuous speed control can be implemented. This allows low-speed startup (100% duty drive at startup). • Settable minimum rotation speed for low temperature • Built-in thermistor voltage amplification circuit assures high precision of ambient temperature to rotation speed ratio • Built-in motor lockup protection and automatic recovery circuit Output current Io = 1.5A, built-in output stage protection Zener diode –> Low-noise protection with chip capacitors also possible • Built-in thermal protection • FG output • Direct Hall element connection possible unit: mm 3111-MFP14S 0.625 [LB1965M] 1 1.8max 4.4 5.15 6.4 8 14 7 0.15 0.1 1.5 8.0 0.35 1.0 1.0 SANYO : MFP14S Specifications Absolute Maximum Ratings at Ta = 25˚C Parameter Maximum input current Maximum applied output voltage Maximum output current Current flowing into FG FG applied voltage Allowable power dissipation Operating temperature Storage temperature Symbol Conditions ICC max t ≤ 20 ms VOUT max I out max IRD max VRD max Pd max Mounted on a specified PCB (114.3 × 76.1 × 1.5 mm3 glass epoxy) Topr Tstg Ratings 200 Internal 1.5 10 50 0.8 –30 to +85 –55 to +150 Unit mA V A mA V W °C °C 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 83100RM(KI) No. 6189-1/6 LB1965M Allowable Operating Ranges at Ta = 25˚C Parameter Input current range Hall amplifier common mode input voltage range RMI input voltage range Rth input voltage range Symbol ICC VICM Conditions Ratings 6.0 to 50 0 to VIN–1.5 VRMI VICM 0.3 to VIN 0 to VIN–1 Unit mA V V V Electrical Characteristics at Ta = 25˚C, ICC = 10 mA Parameter Symbol Output limiter voltage Output saturation voltage Input voltage Amplifier input offset voltage Amplifier input bias current FG output saturation voltage C charge voltage C discharge voltage Comp input threshold voltage Ct discharge voltage Rt input current VRt amplification RMI offset voltage Thermal protection operating voltage Ratings Conditions VoLM1 Vosat1 Vosat2 Vosat3 VIN VOFF IBA VFG(sat) IC1 IC2 VTH1 VTH2 VCT Irt VRt VRMIoff TSD min 30 Io = 0.1A Io = 0.5A Io = 1.0A Io = 1.5A Icc = 7.0 mA 32 0.95 1.15 1.4 6.7 0 max 34 1.2 1.5 2.0 7.0 7.0 0.15 2.7 3.9 0.35 0.50 0.77 0.8VIN 0.42 0.45VIN 0.20 0.22VIN 1 1.52 1.56 –7 0 150 180 0.3 5.0 0.65 0.83 0.48 0.24 3 1.60 +7 210 6.4 –7.0 –250 IFG = 5 mA C = GND C = VIN VRT = GND RT = OPEN Design target value* typ Unit V V V V V mV nA V µA µA V V V µA times mA ˚C * Design target values are not measured. Pin Assignment Pd max – Ta 30 60 85 90 9 8 OUT2 B2 10 RMI 11 IN– IN+ CR OUT1 B1 GND LB1965M 200 0 12 Rth 13 416 400 0 –30 14 Ct 600 FG Specified substrate (114.3 × 76.1 × 1.5 mm3) glass epoxy VIN 800 NC Allowable power dissipation, Pd max – mW 1000 1 2 3 4 5 6 7 (Top View) 120 Ambient temperature, Ta – °C No. 6189-2/6 LB1965M Truth Table IN+ IN– Ct Rt RMI CR OUT1 OUT2 FG H L H L – – L H L H – – H H H H L – L L H H H – H H L L H – L L L L L H H L H L H H L H L H H H L H L H – – Mode Full speed Full speed Minimum speed Minimum speed Low speed Lockup protection Sample Application Circuit 12V D1 R1 390 C3 R2 470k R4 18k B1 OUT1 H IN– R3 30k OUT2 B2 IN+ Ct R5 39k FG VIN R6 2k TH 10k Rth RMI CR GND C4 C1 0.47 µ C2 0.022 µ Noise absorption capacitor 0.01 to 0.047µF Unit ( resistance: Ω, capacitance: F) The above circuit is an example for ambient temperature based speed control using a thermistor. The thermistor voltage (Rth pin voltage) is multiplied internally by 1.6 and compared to the voltage at the Ct pin. With the above settings and at Ta = 25˚C, the Rth pin voltage is interrupted for the interval t off as defined by the equation below. At Ta = 45˚C, because the Rth pin voltage × 1.6 becomes less than Vct (=1.5V), there is no cut-off interval and the motor is driven with a duty ratio of 100%. At low temperatures, the thermistor voltage (Rth × 1.6) will rise, but minimum rotation speed is maintained to a value defined by the RMI pin voltage. Therefore minimum rotation speed at temperatures below Ta = 25˚C is constant. VIN–VRth × 1.6 t = –C2⋅R2⋅In ( VIN–VCt ) No. 6189-3/6 LB1965M Output Timing Chart Hall input Discharge pulse Low temperature To VRMI VRth × 1.6 Ct voltage Toff VCt (=1.5V) Ton High temperature GND Output off signal OUT1 current Full-phase ON waveform Controlled waveform OUT2 current FG output ×1.6 times circuit Timing comparator VIN To output 0.6r r GND Rth RMI Ct Discharge pulse No. 6189-4/6 LB1965M Block Diagram D1 L1 R1 B1 VIN 14 Thermal Protect 6 5 OUT1 R6 L2 IN+ Control Block 3 AMP 2 H IN– 8 B2 Constant 9 Charge/ OUT2 Discharge CR 4 C1 0.47 to10 µF 13 FG VIN R2 Ct 12 7 GND C2 OUTPUT-Timing-Control ×1.6 11 Rth 10 RMI R3 R4 TH1 R5 Unit ( resistance: Ω, capacitance: F) No. 6189-5/6 LB1965M 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 August, 2000. Specifications and information herein are subject to change without notice. PS No. 6189-6/6