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| Ordering number : EN5976A LB1995 Monolithic Digital IC LB1995 Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive Overview The LB1995 is a three-phase brushless motor driver especially suited for CD-ROM spindle motor drives. Package Dimensions unit: mm 3227-HSOP24 [LB1995] 15.3 4.3 0.3 Allowable power dissipation, Pd max - W * Current linear drive * Control V type amplifier with single side control switching pin * Separate power supply for output upper side bias circuit allows low output saturation by boosting this power supply only (useful for 5V power supply types). * Upper side current detection technique reduces loss voltage of current detection resistor. Voltage effect of this resistor reduces internal current drain of IC. * Built-in short braking circuit * Built-in reverse blocking circuit * Hall FG output * Built-in S/S function * Built-in current limiter circuit * Built-in Hall power supply * Built-in thermal shutdown circuit 0.65 7.9 2.25 2.5max 0.25 Functions 24 13 1 0.3 0.8 12 0.85 0.1 SANYO : HSOP24 2.0 1.9 Pd max - Ta With substrate 1.6 1.2 0.8 IC only 0.4 0 -20 0 Ambient temperature, Ta - C 20 40 60 75 80 1.3 10.5 100 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. 5976-1/9 LB1995 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 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 0.8 1.9 -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 C C Operating Conditions at Ta = 25C Parameter Power supply voltage Symbol Conditions Ratings 4 to 6 Unit V V V VCC1 VCC2 VCC3 VCC1 4 to 13.6 4 to 13.6 Sample Application at Ta = 25C Parameter 12V type Symbol Conditions Regulated voltage Unregulated voltage Regulated voltage Boost-up voltage or regulated voltage (Note) Ratings 4 to 6 4 to 13.6 4 to 6 4 to 13.6 Unit V V V V VCC1 VCC2 = VCC3 VCC1 = VCC3 5V type VCC2 Note: When boost-up voltage is used at VCC2, output can be set to low-saturation. No. 5976-2/9 LB1995 Electrical Characteristics at Ta = 25C, VCC1 = 5V, VCC2 = VCC3 = 12V Parameter [Power supply current] Power supply current Symbol Conditions min Ratings typ max Unit ICC1 ICC2 ICC3 VC = VCREF VC = VCREF VC = VCREF VS/S = 0V VS/S = 0V VS/S = 0V IO = -0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V IO = 0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V IO = -0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V IO = 0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V RRF = 0.43 1.2 8 0 150 250 200 30 30 mA mA A A A A Output idle current ICC1OQ ICC2OQ ICC3OQ [Output] Saturation voltage, upper side 1 lower side 1 Saturation voltage, upper side 2 lower side 2 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 VOU2 VOD2 VCL VHCOM IHIB VHIN VS/SH VS/SL IS/SI IS/SL IVC IVCREF GVCO VCTH VCTH VH IH TTSD TTSD VBRH VBRL VCCH VCCL 1.0 0.3 0.3 0.3 0.37 V V V V V VCC-1.0 1 V A 60 mVP-P VCC1 0.7 200 V V A A A A times 2.65 150 V mV 2.0 VS/S = 5V VS/S = 0V VC = VCREF = 2.5V VC = VCREF = 2.5V VRF/VC VCREF = 2.5V VCREF = 2.5V IH = 5 mA 20 2.35 50 -30 VC pin input current VCREF pin input current Voltage gain Startup voltage Startup voltage width [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 [Control switching] CC pin at High level CC pin at Low level 1 1 0.25 0.8 V mA Design target value Design target value 150 180 15 210 C C 4 0 5 1 V V 4 0 5 1 V V Note: * During S/S OFF (standby), the Hall comparator is at High. * Design target values are not measured. No. 5976-3/9 LB1995 Truth Table Hall input Source -> Sink U V Phase W -> Phase V Phase V -> Phase W Control W L VC H L H L H L H L H L H L 1 2 H H L H L L H Phase W -> Phase U Phase U -> Phase W L H 3 4 5 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 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. Pin Assignment VOUT 1 UOUT 2 VCC2 3 VCC3 4 RF 5 VCC1 6 24 PWR GND 23 WOUT 22 VC 21 VCREF 20 FC 19 CC FRAME GND LB1995 FRAME GND UIN2 7 UIN1 8 VIN2 9 VIN1 10 WIN2 11 WIN1 12 18 SIG GND 17 S/S 16 BRAKE 15 FG 14 RS 13 VH Top view A11125 No. 5976-4/9 VCC1 RF VCC2 Block Diagram UIN1 + UIN2 - VIN1 + Matrix Waveform distributor VIN2 - UOUT VOUT WOUT WIN1 + WIN2 - LB1995 PWR GND Current limiter Short brake VCC3 BRAKE VH Hall power supply - - + + - Forward/ reverse VCREF VC CLV/CAV switching CC + - + Reference voltage Thermal shutdown SIG GND Rotation direction detector - + FG RS FC S/S A11124 No. 5976-5/9 LB1995 Sample Application Circuit 0.1F 0.1F 1 VOUT 2 UOUT 3 VCC2 4 VCC3 PWR GND 24 WOUT 23 VC 22 VCREF 21 FC 20 0.1F CC 19 CC 0.1F CTRL signal CTRL reference voltage 0.2 to 0.5 5 RF 6 VCC1 0.1F LB1995 FRAME GND FRAME GND 0.047F 7 UIN2 8 UIN1 SIG GND 18 S/S 17 BRAKE 16 FG 15 RS 14 VH 13 S/S BRAKE 0.047F 9 VIN2 10 VIN1 0.047F 11 WIN2 12 WIN1 A11126 Power supply - GND Output - GND Between Hall inputs Capacitor requirements may change depending on motor. For some motors, capacitor between Hall inputs may not be needed. No. 5976-6/9 LB1995 Pin Descriptions Pin number 3 Pin name Pin voltage 4V to 13.6V Equivalent circuit Pin function VCC2 VCC3 Source side predrive voltage supply pin Constant current control amplifier voltage supply pin Power supply pin for all circuits except output transistors, source predriver, and low current control amplifier VCC1 10 k 14 15 4 4V to 13.6V 6 VCC1 4V to 6V 14 RS 100A Reverse detector pin Forward rotation: High Reverse rotation: Low 1 Hall element waveform Schmitt comparator composite output 15 FG A11127 8 7 UIN1 UIN2 25A 8 VCC1 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 10 9 VIN1 VIN2 200 200 7 9 11 1.2V to VCC1-1V 10 12 25A 25A 12 11 WIN1 WIN2 VCC1 75A A11128 13 13 VH 30 k 2 k A11129 VCC1 75 k 17 S/S 0V to VCC1 17 50 k A11130 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. 18 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 20 FC 20 20 k 5 k A11131 Continued on next page No. 5976-7/9 LB1995 Continued from preceding page Pin number Pin name Pin voltage Equivalent circuit VCC1 Pin function 21 VCREF 2V to 3V 22 200 25A 10 k 25A 200 21 Control reference voltage supply pin. Determines control start voltage. Speed control voltage supply pin V type control technique VC > VCREF : Forward VC < VCREF : Slowdown (Reverse-blocking circuit prevents reverse rotation.) 30 k 15 k 30 k 100A 100A 22 VC 0V to VCC1 A11132 23 24 1 2 WOUT PWR GND W phase output VCC2 5 3.9 23 1 3.9 2 VOUT UOUT 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. V type control/single-side control switching pin CC: High -> Single-side control Low/Open -> V type control 5 RF 24 A11133 VCC1 75 k 19 19 CC 8 k 8 k 50 k A11134 VCC1 100A 75 k 16 BRAKE 50 k 16 Short brake pin BRAKE: High -> Short brake operation Low/Open -> Motor drive operation A11135 No. 5976-8/9 LB1995 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. 5976-9/9 |
Price & Availability of LB1995
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