Ordering number :EN*6213A Monolithic Digital IC LB11817 Three-Phase Full-Wave Linear Drive Preliminary Overview Package Dimensions The LB11817 is a spindle motor driver for use in slimshaped FDDs that use 5 V power supply. unit: mm 3247-SSOP36 Functions and Features 1.0 [LB11817] Three-phase full-wave linear drive Low saturation voltage Built-in digital speed control Start/stop circuit (active low) Speed switching Current limiter Index processing circuit The index timing can be adjustment with a variable resistor. • Thermal protection circuit 19 0.5 5.6 36 7.6 • • • • • • • • 1 18 0.20 0.8 0.8 (1.5) 0.10 15.2 1.8max 0.30 SANYO: SSOP36 Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Maximum supply voltage VCCmax Maximum output current IO max1 Maximum steady-state output current IO max2 Allowable power dissipation 1 Pdmax1 Conditions Ratings Unit 7.0 t ≤ 0.5 s Independent IC V 1.5 A 1.0 A 0.6 W Operating temperature Topr –20 to +80 °C Storage temperature Tstg –40 to +150 °C Allowable Operating Ranges at Ta = 25°C Parameter Supply voltage Symbol Conditions Ratings 4.2 to 6.5 VCC Unit 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 63099RM (OT) No. 6213-1/10 LB11817 Electrical Characteristics at Ta = 25°C, VCC = 5 V Parameter Current drain SL bias current Symbol ICCO Conditions Ratings min typ S/S = 5 V (standby mode) ICC S/S = 0 V (normal operation) ISL VSL = 0 V 17 max Unit 10 µA 25 mA 10 µA SL low-level input voltage VSLL 0 1.0 V SL high-level input voltage VSLH 3.5 VCC V 230 µA 150 S/S bias current IS/S S/S low voltage VS/SL 0 0.8 V S/S high voltage VS/SH 3.5 VCC V 10 µA Hall amplifier input bias current IH Common-mode input voltage range Vh 1.5 VCC – 1.0 Differential input voltage range Vdif 50 200 0.8 V mVp-p Hall bias output voltage VHB IH = 5 mA Hall bias leakage current IHBL S/S = 5 V Output saturation voltage Vsat IO = 0.5 A sink+source Output leakage current IOL Current limiter Vlim 0.27 0.3 0.33 V Control amplifier voltage gain GC –9 –7 –5 dB Voltage gain inter-phase difference 0.5 0.45 ∆GC 1.1 V ±10 µA 0.67 V 1.0 mA ±1 dB V/I conversion source current I+ 9 14 19 µA V/I conversion sink current I– –9 –14 –19 µA V/I conversion current ratio I+/I– 0.8 1.0 1.2 DSC buffer input current IDSC FG amplifier voltage gain GFG FG offset amplifier input VFG0 FG amplifier internal reference voltage VFGB FG Schmitt hysteresis ∆Vsh Speed discriminator counts Discriminator operating frequency 1.0 48 2.2 2.5 µA dB * ±10 mV * 2.8 V 50 N Note mV * 1041.5 FD 1.1 MHz * Oscillator frequency range FOSC 1.1 MHz * Index output low-level voltage VIDL 0.4 V Index output leakage current IIDL ±10 µA Index amplifier common-mode input voltage range VID VCC – 1.0 V Index input hysteresis Boost voltage Thermal protection circuit operating temperature Hysteresis IO = 2 mA 1.0 ∆VID VP 25 Ip = –5 mA TSD ∆TSD mV 1.39 1.55 1.71 V 150 180 °C * 40 °C * Note: * Items shown to be design target values are not measured. No. 6213-2/10 LB11817 Pin Assignment VR 36 1 TC 2 ID I- 35 3 S/S I+ 34 4 SL FG+ 33 5 CLK FG- 32 6 FC FGO 31 7 DO HB 30 8 GND W- 29 9 VCC LB11817 W+ 28 10 VP V- 27 11 RF V+ 26 12 D2 U- 25 13 B2 U+ 24 14 B1 NC 23 15 D1 NC 22 16 NC NC 21 17 WOUT UOUT 20 18 PGND VOUT 19 Top view No. 6213-3/10 LB11817 Pdmax — Ta 1.2 Allowable power dissipation, Pdmax (W) 1.0 0.8 Independent IC 0.6 0.4 0.2 0 -20 0 20 40 60 80 100 Ambient temperature, Ta (°C) No. 6213-4/10 LB11817 Truth Table Hall input Source → sink U V W 1 V →W H H L 2 V →U L H L 3 W →U L H H 4 W →V L L H 5 U →V H L H 6 U →W H L L Index Delay Pulse Timing Chart 1 + HYS 1 - TC T1 ID T2 T1 ≈ 1.363 ms ........... SL = H T1 ≈ 1.635 ms ........... SL = L T2 ≈ FG+ VR 1.25 × T1 VVR (VVR is the pin voltage) No. 6213-5/10 LB11817 Pin Functions Pin No. 1 Symbol Pin voltage Function • Connection for the external capacitor used to adjust the index timing. TC Equivalent circuit 1 2 2 ID L: 0.4 Vmax H: 4.5 Vmin • Index output VCC 3 S/S L: 1.0 Vmax H: 3.5 Vmin • Start/stop control. This is an active-low input. 3 VCC 4 SL L: 1.0 Vmax H: 3.5 Vmin • Speed switching input 4 VCC 5 6 CLK FC L: 0.5 Vmax H: VCC – 1.0 Vmin • Reference clock input. The threshold voltage is 1.25 V. At 1 MHz, the LB11817 supports speeds of 300 and 360 rpm. 2 kΩ 5 • Frequency characteristics correction. Oscillation in the current control closedloop circuit can be stopped by inserting a capacitor between this pin and ground. VCC 7 DO • Speed discriminator 7 Continued on next page. No. 6213-6/10 LB11817 Continued from preceding page. Pin No. Symbol 8 GND 9 VCC 10 11 VP RF Pin voltage Function Equivalent circuit • Ground This pin and pin 34 must all be connected to the frame ground. 4.2 to 6.5 V • Supply voltage This voltage must be stabilized so that ripple and noise do not enter the IC. VCC + 1.55 Vtyp (Ip = –5 mA) • Boosted voltage output Used as the output transistor pre-driver power supply. This boosted voltage is used when a low saturation output is provided. In all other cases this pin will be at the VCC potential. • Output current detection An RF resistor inserted between this pin and VCC converts the output current to the voltage used for output current detection. The current limiter circuit operates by detecting the voltage on this pin. VCC 12 15 D2 D1 • Connections for the two diodes used by the voltage boost function. 15 12 VP VCC 10Ω 13 14 B2 B1 • Boost function switching circuit outputs 1 and 2 10Ω 13 14 10Ω 10Ω 11 17 19 20 WOUT VOUT UOUT • W-phase output 17 19 20 • V-phase output • U-phase output 18 Continued on next page. No. 6213-7/10 LB11817 Continued from preceding page. Pin No. 18 Symbol Pin voltage PGND Function Equivalent circuit • Output transistor ground 24 24 25 26 27 28 29 UIN+ UIN– VIN+ VIN– WIN+ WIN– Vcc 1kΩ 26 • U-phase Hall device inputs 1.5 Vmin VCC – 1.0 Vmax 28 • V-phase Hall device inputs Vcc • W-phase Hall device inputs 25 27 1kΩ 29 30 HB 0.8 Vtyp (IH = 5 mA) • Negative potential that provides Hall device bias current In the stopped state, this pin is set to the open state to cut off the Hall device bias current. 30 Vcc 3 kΩ • FG amplifier output 31 32 33 FGO FG+ FG– 32 750 kΩ • FG amplifier minus input 2.5 Vtyp Vcc • FG amplifier plus input VCC A 2.5 V reference voltage is generated internally by the IC. 33 31 2. 5V Vcc 200 Ω 34 34 35 I+ I– • Index inputs Vcc 35 36 VR 200 Ω • Index timing adjustment voltage input 36 No. 6213-8/10 LB11817 Block Diagram Note that the values of the external components shown here are reference values and are not guaranteed to be appropriate in a given application. I+ 0.1 µF VCC VCC 100 kΩ 0.1 µF 0.1µF 0.1 µF IVR TC ID VP D1 D2 B2 B1 1 µF Voltage boost circuit VCC 25 mV Timing adjustment VCC RF U+ U Hall amplifier U U Amplitude control U- V- Matrix V+ V W+ W- V V W W W PG HB Hall bias TSD FC S/S Chip select Reference voltage 0.1µF Control amplifier and current limiter 300/360 rpm selection SL CLK OSC Divider Speed discriminator Vref FG+ FG pattern FG0.47 µF FGO 3 kΩ DO V/I FG amplifier (× 250) 50 mV GND No. 6213-9/10 LB11817 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 June, 1999. Specifications and information herein are subject to change without notice. PS No.6213-10/10