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| Ordering number : EN5979A LB1998 Monolithic Digital IC LB1998 Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive Overview The LB1998 is a three-phase brushless motor driver especially suited for CD-ROM spindle motor drives. Package Dimensions unit: mm 3234-HSOP28HC [LB1998] 15.3 6.2 2.7 28 15 Functions * Current linear drive * Control V type amplifier * Top side current detection technique reduces loss voltage of current detection resistor. Voltage effect of this resistor reduces internal current drain of IC. * Built-in current limiter circuit * Built-in reverse blocking circuit * Hall FG output * Built-in 1 Hall FG/3 Hall FG switching circuit * Built-in short braking circuit * Built-in Hall bias cicuit * Built-in thermal shutdown circuit * Built-in S/S function * Built-in 3 mode gain switching function ensures compatibility with 8/12 cm CAV and CLV discs 7.9 0.65 0.25 1 0.85 0.8 0.3 2.5max 0.1 2.25 SANYO : HSOP28HC 2.0 Pd max - Ta With substrate (114.3 mmx76.1 mmx1.6 mm3) Allowable power dissipation, Pd max - W 1.8 1.6 1.2 1.08 0.8 IC only 0.79 0.474 0.4 0 -25 0 Ambient temperature, Ta - C 25 50 75 1.3 10.5 4.9 100 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 60499RM(KI)/30299RM(KI) No. 5979-1/9 LB1998 Specifications Maximum Ratings at Ta = 25C Parameter Power supply voltage Symbol Conditions Ratings 7.0 14.4 14.4 14.4 Unit V V V V V A W W C C VCC1 max VCC2 max VCC3 max Applied output voltage Applied intput voltage Output current Allowable power dissipation VO max VIN max IO max Pd max IC only VCC1 1.3 0.79 1.80 -20 to +75 -55 to +150 with substrate (114.3 x 76.1 x 1.6 mm3, glass exposy) Operating temperature Storage temperature Topr Tstg Operating Conditions at Ta = 25C Parameter Power supply voltage Symbol Conditions Ratings 4 to 6 Unit V V VCC1 VCC2 VCC1 4 to 13.6 Sample Application at Ta = 25C Parameter 12V type Symbol Conditions Regulated voltage Unregulated voltage Ratings 4 to 6 4 to 13.6 Unit V V VCC1 VCC2 No. 5979-2/9 LB1998 Electrical Characteristics at Ta = 25C, VCC1 = 5V, VCC2 = 12V Parameter [Power supply current] Power supply current Symbol Conditions min Ratings typ max Unit ICC1 ICC2 ICC1OQ ICC2OQ VCIN = VCREF VCIN = VCREF VS/S = 0V VS/S = 0V IO = -0.5A, VCC1 = 5V, VCC2 = 12V IO = 0.5A, VCC1 = 5V, VCC2 = 12V RRF = 0.25 1.2 8 250 300 200 60 mA mA A A Output idle current [Output] Saturation voltage, upper side 1 Saturation voltage, lower side 1 Current limiter setting voltage [Hall amplifier] Common mode input voltage range Input bias current Minimum Hall input level [S/S pin] High level voltage Low level voltage Input current Leak current [Control] VOU1 VOD1 VCL VHCOM IHIB VHIN VS/SH VS/SL IS/SI IS/SL IVC IVCREF GVCO VCTH VCTH VGCOFFSET 1.0 0.3 0.25 V V V VCC1-1.0 V A 1 60 mVP-P VCC1 0.7 200 V V A A A A times 1.85 200 V mV 2.0 VS/S = 5V VS/S = 0V VCIN = VCREF = 1.65V VCIN = VCREF = 1.65V VRF/VC, Note 1 VCREF = 1.65V, Note 1 VCREF = 1.65V, Note 1 Design target value f = 10 kHz, Design target value 0 1.55 100 0.25 -30 VCIN pin input current VCREF pin input current Voltage gain Startup voltage Startup voltage width [Gain switching amplifier] Input offset voltage OPEN LOOP voltage gain Same-phase input voltage range [Hall power supply] Hall power supply voltage Allowable current [Thermal shutdown] Operating temperature Hysterisis [Short braking] Brake pin at High level Brake pin at Low level [1 Hall FG/3 Hall FG switching] 1 1 -8 43 +8 mV dB GVGC VGCOM VH IH TTSD TTSD VBRH VBRL VFSH VFSL RINH RINL 3.5 V IH = 5 mA 20 0.8 V mA Design target value Design target value 150 180 15 210 C C 4 0 5 1 V V FGSEL pin at High level FGSEL pin at Low level [Gain switching analog switch] Analog switch at High level Analog switch at Low level 4 0 5 1 VCC-0.5 0 VCC1 0.2 Note: * During S/S OFF (standby), the Hall comparator is at High. * Gain switching amplifier operated at a factor of 1. * Design target values are not measured. No. 5979-3/9 LB1998 Truth Table Hall input Source -> Sink U V Phase W -> Phase V Phase V -> Phase W Control W L VCIN H L H L H L H L H L H L 1 2 3 4 5 H H L H L L H Phase W -> Phase U Phase U -> Phase W Phase V -> Phase W Phase W -> Phase V Phase U -> Phase V Phase V -> Phase U Phase V -> Phase U Phase U -> Phase V L H L H L L H H L H 6 Input: Phase U -> Phase W Phase W -> Phase U H: Input 1 is higher in potential than input 2 by at least 0.2V. L: Input 1 is lower in potential than input 2 by at least 0.2V. Brake Mode Switching Truth Table BRAKE pin L, OPEN H VCIN > VCREF Foward Foward VCIN < VCREF Reverse brake Short brake Pin Assignment VCIN 1 RIN1 2 RIN2 3 RIN3 4 SIG GND 5 S/S 6 BRAKE 7 28 ROUT3 27 ROUT2 26 ROUT1 25 FGSEL 24 FC 23 VCREF 22 WOUT PWR GND LB1998 PWR GND FG 8 RS 9 VH 10 WIN1 11 WIN2 12 VIN1 13 VIN2 14 21 VOUT 20 UOUT 19 VCC2 18 RF 17 VCC1 16 UIN2 15 UIN1 Top view A11194 No. 5979-4/9 VCC1 RF VCC2 Block Diagram UIN1 + UIN2 - VIN1 + Matrix Waveform distributor VIN2 - UOUT VOUT WOUT WIN1 + WIN2 - LB1998 PWR GND Current limiter Short brake/ reverse brake switching BRAKE VH Hall power supply - + + - - + - Forward/ reverse VCREF + VCIN Gain switching amplifier ROUT1 - Thermal shutdown + 1 Hall FG/ 3 Hall FG RIN1 ROUT2 RIN2 Rotation direction detector - Reference voltage + ROUT3 RIN3 RS FGSEL FC S/S FRAME GND A11193 No. 5979-5/9 FG LB1998 Sample Application Circuit Control voltage 1 VCIN Gain switching SW(0V or VCC1) ROUT3 28 ROUT2 27 ROUT1 26 1/3 Hall FG switching 2 RIN1 Gain switching SW(0V or VCC1) 3 RIN2 Gain switching SW(0V or VCC1) 4 RIN3 Applying VCC1 to each pin activates load between ROUT-VCIN S/S FGSEL 25 FC 24 VCREF 23 WOUT 22 0.1F 0V or Open:1 Hall FG :3 Hall FG VCC1 5 SIG GND 6 S/S 0.1F Control reference voltage Brake mode switching 7 BRAKE LB1998 PWR GND PWR GND FG output 8 FG Reverse detection VOUT 21 0.1F UOUT 20 VCC2 19 RF 18 VCC1 17 0.1F UIN2 16 UIN1 15 Hall element Power supply voltage 5V 9 RS 10 VH 11 WIN1 12 WIN2 13 VIN1 14 VIN2 0.1F Motor power supply voltage 12V 0.1F 0.033F 0.033F 0.033F A11195 No. 5979-6/9 LB1998 Pin Descriptions Pin number 19 Pin name VCC2 Pin voltage 4V to 13.6V Equivalent circuit Pin function Source side predrive voltage and constant current control amplifier voltage supply pin Power supply pin for all circuits except output transistors, source predriver, and low current control amplifier Reverse detector pin Forward rotation: High Reverse rotation: Low 1 Hall or 3 Hall element waveform Schmitt comparator combined output U phase Hall element input and reverse detector U phase Schmitt comparator input pin Logic High indicates UIN1 > UIN2. V phase Hall element input and reverse detector V phase Schmitt comparator input pin Logic High indicates VIN1 > VIN2. W phase Hall element input and reverse detector W phase Schmitt comparator input pin Logic High indicates WIN1 > WIN2. Hall element lower side bias voltage supply pin 17 VCC1 4V to 6V VCC1 9 RS 100A 10 k 8 9 8 FG A11196 15 16 UIN1 UIN2 11 13 200 VCC1 25A 12 14 200 16 13 14 VIN1 VIN2 1.2V to VCC1-1V 15 25A 25A A11197 11 12 WIN1 WIN2 VCC1 75A 10 10 VH 30 k 2 k A11198 VCC1 75 k 6 50 k A11199 6 S/S 0V to WCC1 When this pin is at 0.7V or lower, or when it is open, all circuits are inactive. When driving motor, set this pin to 2V or higher. 5 SIG GND VCC1 GND pin for all circuits except output Control loop frequency compensator pin. Connecting a capacitor between this pin and GND prevents closed loop oscillation in current limiting circuitry. 2 k 24 FC 24 20 k 5 k A11200 Continued on next page No. 5979-7/9 LB1998 Continued from preceding page Pin number Pin name Pin voltage Equivalent circuit VCC1 15A 25A 68 k 25A 15A Pin function Control reference voltage supply pin. Determines control start voltage. 23 VCREF 0V to 3.5V 200 23 A11201 VCC1 6A 6A 6A 1 VCIN 0V to 3.5V 200 1 6 pF 23 Speed control voltage supply pin V type control technique VC > VCREF : Forward VC < VCREF : Slowdown (Reverse-blocking circuit prevents reverse rotation.) A11202 22 21 20 WOUT PWR GND VOUT UOUT 3.9 20 21 22 3.9 VCC2 18 W phase output Output transistor GND V phase output U phase output Upper side output PNP transistor collector pin (common for all 3 phases). For current detection, connect resistor between VCC3 pin and RF pin. Constant current control and current limiter works by detecting this voltage. 1 Hall FG/3 Hall FG output, switching pin: High -> 3 Hall FG Low/Open -> 1 Hall FG A11204 18 RF PWRGND A11203 VCC1 75 k 25 25 FGSEL 50 k VCC1 100A 75 k 7 BRAKE 50 k 3 A11205 Brake mode switching pin BRAKE: High -> Short brake Low/Open -> Reverse brake Brake mode changes when VCIN > VCREF. Continued on next page No. 5979-8/9 LB1998 Continued from preceding page Pin number Pin name Pin voltage Equivalent circuit Pin function 2 RIN1 Gain switching selector pin When set to High (VCC1), resistor connected between ROUT1 and VCIN is selected as negative feedback resistor. VCC1 3 RIN2 0 to VCC1 Low: 0V High: VCC1 26 27 28 10 k 2 3 4 Gain switching selector pin When set to High (VCC1), resistor connected between ROUT2 and VCIN is selected as negative feedback resistor. Gain switching selector pin When set to High (VCC1), resistor connected between ROUT3 and VCIN is selected as negative feedback resistor. Negative feedback resistor connector pins Connect negative feedback resistors between these pins and VCIN. 4 RIN3 A11206 26 27 28 ROUT1 ROUT2 ROUT3 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. 5979-9/9 |
Price & Availability of LB1998
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