Ordering number : ENN5805 LB1817W Monolithic Digital IC LB1817W FDD Spindle Motor Driver Overview Package Dimensions The LB1817W is a spindle motor driver for low-profile floppy disk drives. unit: mm 3163A-SQFP48 [LB1817W] Functions and Features 9.0 7.0 0.5 0.18 0.75 • Three-phase full-wave linear drive (with external PNP transistor) • Low saturation voltage • Built-in digital speed control • Start/stop circuit (Low active) • Switchable rotation speed • Current limiter circuit • Built-in index processing circuit • Index timing adjustable by VR • AGC circuit • Thermal protection circuit 0.75 0.15 25 36 37 0.5 9.0 7.0 0.75 24 12 0.1 0.75 1 1.7max 13 48 0.5 0.5 SANYO : SQFP48 Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Maximum output current Maximum constant output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max ICC max1 IO max2 Pd max1 Topr Tstg Conditions Ratings 7.0 1.5 1.0 0.45 –20 to +80 –40 to +150 Unit V A A W °C °C Ratings 4.2 to 6.5 Unit V t ≤ 0.5s IC only Allowable Operating Ranges at Ta = 25°C Parameter Power supply voltage Symbol VCC Conditions 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 73099RM(KI) No. 5805-1/9 LB1817W Electrical Characteristics at Ta = 25°C, VCC = 5V Parameter Current drain MS1 bias current MS1 Low input voltage MS1 High input voltage MS2 bias current MS2 Low input voltage MS2 High input voltage MS3 bias current MS3 Low input voltage MS3 High input voltage S/S bias current S/S Low voltage S/S High voltage Hall amplifier input bias current Common mode input voltage range Differential input voltage range Input offset voltage Hall bias output voltage Leakage current Output saturation voltage Output leakage current Current limiter Control amplifier voltage gain Voltage gain phase differential V/I conversion source current V/I conversion sink current V/I conversion current ratio DSC buffer input current FG amplifier input voltage FG amplifier voltage gain FG amplifier input offset FG amplifier internal reference voltage FG Schmitt hysteresis width Speed discriminator count Discriminator operating frequency Oscillator frequency Oscillator frequency tolerance Index output Low voltage Index output leakage current Index amplifier common mode input voltage range Index amplifier differential input voltage range Index amplifier hysteresis set current Timing adjustment at High level Timing adjustment at Low level Timing adjustment ratio Reference voltage Thermal protection operating temperature Hysteresis width Symbol ICCO ICC IMS1 VMS1L VMS1H IMS2 VMS2L VMS2H IMS3 VMS3L VMS3H IS/S VS/SL VS/SH IHB Vh Vdif Vho VH VHL V(sat) IOL Ilim GC ∆GC I+ I– + – I /I IDSC VFG GFG VFGO VFGB ∆Vsh1 ∆Vsh2 N FD FOSC ∆FOSC VIDL IIDL VI VDIF IHYS VTH VTL THL VREF1 VREF2 TSD ∆TSD Conditions Ratings typ 70 25 180 min S/S = 5V (Standby) S/S = 0V (Normal) VMS1 = 5V 0.0 2 VMS2 = 5V 90 0.0 2 VMS3 = 5V 90 0.0 2 0.0 2 2.0 50 * IH = 5 mA S/S = 5V IO = 0.8A RF = 3 kΩ, ROUT = 100Ω fFG = 300 Hz Open loop* * 0.5 0.45 6.3 –7.5 7.5 –5.5 19 –19 0.8 28 –28 1.0 2 60 2.2 High –> Low* Low –> High* * * IO = 2 mA Hysteresis width < 25 mA MS1 = L MS1 = L VTH (MS1 = L) / VTH (MS1 = H) * * 0.8 max 100 35 270 0.8 VCC 135 0.8 VCC 135 0.8 VCC 20 0.8 VCC 15 VCC–0.7 200 ±10 1.1 ±10 0.64 1 8.7 –3.5 ±1 37 –37 1.2 1 20 0.2 25 2.9 1.15 0.40 2.20 1.85 150 2.5 25 25 1390/2 ±10 2.8 1.1 1.1 ±0.2 0.4 ±10 VCC–0.7 100 4.2 5.5 1.26 1.35 0.52 0.60 1.148 2.50 2.80 2.15 2.45 180 10 Unit µA mA µA V V µA V V µA V V µA V V µA V mVp-p mV V µA V mA mA dB dB µA µA µA mVp-p dB mV V mV mV MHz MHz % V µA V mV µA V V V V °C °C Note: Items shown to be “*” are not measured. No. 5805-2/9 NC FGOUT UOUT UPB VOUT VPB NC WOUT WPB UIN2 NC Pin Assignment UIN1 LB1817W 36 35 34 33 32 31 30 29 28 27 26 25 24 NC NC 37 VIN2 38 23 FG– VIN1 39 22 FG WIN2 40 21 PG WIN1 41 20 Rf + HB 42 19 NC LB1817W VCC 43 18 FC AGC 44 17 X2 DSC 45 16 X1 + 3 4 5 6 7 8 9 10 11 12 SG MS3 MS2 MS1 Top view NC 2 S/S I– 1 NC 13 NC I/D 14 NC NC 48 VREF2 NC 47 VREF1 15 I NC CT 46 Block Diagram LB1817W VCC Current control HU VCC Hall amplifier U UIN2 Matrix UIN1 VIN1 HV VIN2 WIN1 V HW WIN2 W AGC Output amplifier RF UPB U UOUT VPB V VOUT WPB WOUT PGND W Control amplifier AGC Current limiter VLIM HB Hall bias TSD S/S VCC FC DSC Buffer amplifier VREF1 VREF1 Timing adjustment CT V/I I/D I+ I– 5µA FG OUT 750kΩ 12kΩ N 0.22µF FG– X2 1MHz Schmitt comparator FG+ X1 VREF2 Speed discriminator (1390/2 count) FG amplifier OSC 1/N VREF2 ( MS1 (1:1.2) H:1.2 L:1 H:360rpm L:300rpm MS2 (1:2) H:2 L:1 MS3 SGND ) No. 5805-3/9 LB1817W Pin Descriptions Pin number 1, 5 12, 13 14, 19 24, 25 31, 36 37, 47 48 2 Pin name NC Pin voltage VREF1 2.5V typ Equivalent circuit Pin function • Pins not used VCC 100Ω • VREF1 pin. Used as power supply for external CR serving for index timing adjustment. 2 3 VREF2 2.15V typ VCC • VREF2 pin. Used as bias pin for external index sensor. 3 4 I/D • Index pulse output pin. VCC 4 6 SG 7 MS3 • Signal ground pin. Connect to ground together with pin 21. H: 2.0V min L: 0.8V max VCC 7 • FG switching pin. High: FG set to through Low: FG set to 1-stage division 50kΩ 50kΩ 8 MS2 H: 2.0V min L: 0.8V max VCC 8 • CLK switching pin. High: Clock set to through Low: Clock set to 1-stage division 50kΩ 50kΩ Continued on next page No. 5805-4/9 LB1817W Continued from preceding page Pin number 9 Pin name MS1 Pin voltage H: 2.0V min L: 0.8V max Equivalent circuit VCC 9 10 S/S 50kΩ 50kΩ 50kΩ 50kΩ H: 2.0V min L: 0.8V max VCC Pin function • Rotation speed switching pin. High: 360 rpm Low: 300 rpm For details, see rotation speed switching table. • Start/stop switching pin. Low: active 200Ω 10 11 15 I– I+ VCC I1 15 11 200Ω 16 200Ω X1 VCC • External index – input pin. • External index + input pin. When I– pin is High, constant current I1 flows. When pin is Low, constant current I1 is cut off. Resistor externally connected to I– pin determines hysteresis width. • Reference clock generator pin. 400Ω 16 200Ω 17 X2 VCC 17 18 200Ω 200Ω FC 18 • Frequency characteristics compensation pin. To prevent current control loop oscillation, insert a capacitor between this pin and VCC. Continued on next page No. 5805-5/9 LB1817W Continued from preceding page Pin number 20 Pin name RF 21 PG 22 23 FG+ FG– Pin voltage Equivalent circuit Pin function • Output current detection pin. To detect output current as a voltage, insert a resistor Rf between this pin and VCC. The voltage is used for the current limiter. The detection level is about 1/50 of the output current. • Output transistor ground pin. Connect to ground together with pin 6. 2.5V typ VCC • FG amplifier + pin • FG amplifier – pin 100Ω 200Ω 22 200Ω 23 12kΩ 12kΩ VCC 200Ω 26 FGout • FG amplifier output pin. VCC 39Ω 200Ω 27 28 29 30 32 33 UOUT UPB VOUT VPB WOUT WPB 26 1kΩ 39Ω VCC 28 30 33 27 29 32 21 34 35 UIN2 UIN1 38 39 VIN2 VIN1 40 41 WIN2 WIN1 VCC 35 39 41 200Ω 200Ω 34 38 40 • U phase output pin. • U phase external PNP transistor base connection. • V phase output pin. • V phase external PNP transistor base connection. • W phase output pin. • W phase external PNP transistor base connection. • U phase Hall input pin. Logic High means UIN1 > UIN2. • V phase Hall input pin. Logic High means VIN1 > VIN2. • W phase Hall input pin. Logic High means WIN1 > WIN2. Continued on next page No. 5805-6/9 LB1817W Continued from preceding page Pin number 42 Pin name HB Pin voltage Equivalent circuit VCC 42 43 VCC 44 AGC VCC Pin function • Hall bias negative-side pin. In stop mode, the pin is open and Hall bias is cut off. • Power supply pin. The voltage supplied to this pin must be stabilized to prevent ripple noise or other noises from inputting to this pin. • AGC pin. Controls the Hall amplifier gain according to Hall input amplitude. An external capacitor is used. 100Ω 200Ω 44 45 DSC • Speed discriminator pin. VCC 45 46 200Ω CT VCC 46 • Timing adjustment pin. External CR for time constant circuit is connected here. 100Ω No. 5805-7/9 LB1817W Truth Table Source –> Sink 1 2 3 4 5 6 Hall input V H H H L L L U H L L L H H V phase –> W phase V phase –> U phase W phase –> U phase W phase –> V phase U phase –> V phase U phase –> W phase W L L H H H L Hall input pin High means UIN1 > UIN2 VIN1 > VIN2 WIN1 > WIN2 Rotation Speed Select Table fOSC = 1 MHz H L H H H 720 L H L L L 600 720 H H L 600 1440 L L H 1200 360 300 Pd max – Ta 0.6 Allowable power dissipation, Pd max – W MS1 MS2 MS3 fFG [Hz] 0.5 0.4 0.3 0.28 0.2 0.1 0 –20 0 20 40 60 80 100 Ambient temperature, Ta – °C No. 5805-8/9 LB1817W Index and Timing Chart HYS I+ 1.25V ; MS1 = L 1.08V ; MS1 = H 2.5V CT Falling edge I/D Output T VREF1 =.. 2.5V R (Open-collector) T =.. 0.693CR ... MS1 = L T =.. 0.578CR ... MS1 = H CT C 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 July, 1999. Specifications and information herein are subject to change without notice. PS No. 5805-9/9