Ordering number : EN5977A LB1996 Monolithic Digital IC LB1996 Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive Overview Package Dimensions The LB1996 is a 3-phase brushless motor driver especially suited for CD-ROM spindle motor drives. unit: mm 3227-HSOP24 [LB1996] 15.3 4.3 0.3 24 0.3 0.65 0.25 0.1 2.25 0.8 2.5max 1.3 7.9 12 0.85 1 SANYO : HSOP24 Allowable power dissipation, Pd max – W • Current linear drive • Control V type amplifier • 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 power dissipation 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 • 1 Hall FG/3 Hall FG switchable 13 10.5 Functions Pd max – Ta 2.0 1.9 1.6 With substrate 1.2 0.8 IC only 0.4 0 –20 0 20 40 60 Ambient temperature, Ta – °C 75 80 100 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 62599RM(KI) No. 5977-1/9 LB1996 Specifications Maximum Ratings at Ta = 25°C Parameter Power supply voltage Symbol Conditions Ratings Unit VCC1 max 7.0 V VCC2 max 14.4 V VCC3 max 14.4 V Applied output voltage VO max 14.4 V Applied intput voltage VIN max VCC1 V Output current IO max Allowable power dissipation Pd max 1.3 A IC only 0.8 W with substrate (114.3 x 76.1 x 1.6 mm3, glass exposy) 1.9 W Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Operating Conditions at Ta = 25°C Parameter Symbol Power supply voltage Conditions Ratings VCC1 VCC2 ≥ VCC1 VCC3 Unit 4 to 6 V 4 to 13.6 V 4 to 13.6 V Sample Application at Ta = 25°C Parameter 12V type 5V type Symbol Conditions VCC1 VCC2 = VCC3 Regulated voltage VCC1 = VCC3 Regulated voltage VCC2 Unregulated voltage Boost-up voltage or regulated voltage (Note) Ratings Unit 4 to 6 V 4 to 13.6 V 4 to 6 V 4 to 13.6 V Note: When boost-up voltage is used at VCC2, output can be set to low-saturation. No. 5977-2/9 LB1996 Electrical Characteristics at Ta = 25°C, VCC1 = 5V, VCC2 = VCC3 = 12V Parameter Ratings Conditions Symbol min typ Unit max [Power supply current] Power supply current Output idle current ICC1 VC = VCREF ICC2 VC = VCREF 0 ICC3 VC = VCREF 150 8 mA mA 250 µA ICC1OQ VS/S = 0V 200 µA ICC2OQ VS/S = 0V 30 µA ICC3OQ VS/S = 0V 30 µA [Output] Saturation voltage, upper side 1 lower side 1 Saturation voltage, upper side 2 lower side 2 Current limiter setting voltage VOU1 IO = –0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V 1.0 V VOD1 IO = 0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V 0.3 V VOU2 IO = –0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V 0.3 V VOD2 IO = 0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V 0.3 V 0.37 V VCL RRF = 0.43Ω [Hall amplifier] Common mode input voltage range VHCOM VCC–1.0 1.2 Input bias current IHIB Minimum Hall input level VHIN 60 High level voltage VS/SH 2.0 Low level voltage VS/SL V µA 1 mVP-P [S/S pin] Input current IS/SI VS/S = 5V Leak current IS/SL VS/S = 0V V VCC1 0.7 V 200 µA µA –30 [Control] µA IVC VC = VCREF = 2.5V VCREF pin input current IVCREF VC = VCREF = 2.5V Voltage gain GVCO ∆VRF/∆VC Startup voltage VCTH VCREF = 2.5V 2.35 2.65 V ∆VCTH VCREF = 2.5V 50 150 mV VC pin input current Startup voltage width 1 µA 1 0.25 times [Hall power supply] Hall power supply voltage VH Allowable current IH IH = 5 mA 0.8 V 20 mA [Thermal shutdown] Operating temperature Hysteresis TTSD Design target value ∆TTSD Design target value 150 180 210 °C °C 15 [Short braking] Brake pin at High level VBRH 4 5 V Brake pin at Low level VBRL 0 1 V FGSEL pin at High level VFSH 4 5 V FGSEL pin at Low level VFSL 0 1 V [1 Hall FG/3 Hall FG switching] Note: • During S/S OFF (standby), the Hall comparator is at High. • Items shown to be design target values are not measured. No. 5977-3/9 LB1996 Truth Table Hall input Control Source –> Sink 1 Phase W –> Phase V U V W H H L 2 H L L L H L H L H L H H H Phase U –> Phase W 3 Phase V –> Phase W L 4 Phase V –> Phase U 5 Phase V –> Phase U Phase U –> Phase V 6 Phase U –> Phase W L Phase W –> Phase U H L H L Phase W –> Phase V Phase U –> Phase V H L Phase V –> Phase W Phase W –> Phase U VC H L H L H L Input: 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 24 PWR GND UOUT 2 23 WOUT VCC2 3 22 VC VCC3 4 21 VCREF RF 5 20 FC VCC1 6 FRAME GND 19 FGSEL LB1996 FRAME GND UIN2 7 18 SIG GND UIN1 8 17 S/S VIN2 9 16 BRAKE VIN1 10 15 FG WIN2 11 14 RS WIN1 12 13 VH Top view A11170 No. 5977-4/9 VH WIN2 WIN1 VIN2 VIN1 UIN2 UIN1 VCC1 + – + – + – – + – + – + Hall power supply Rotation direction detector FG RS Forward/ reverse FC S/S Reference voltage Current limiter + Thermal shutdown – Short brake 1 Hall FG/3 Hall FG switching + – A11169 SIG GND FGSEL VC VCREF BRAKE VCC3 PWR GND WOUT VOUT UOUT RF VCC2 LB1996 Block Diagram Waveform distributor Matrix No. 5977-5/9 LB1996 Sample Application Circuit 0.1µF 0.1µF 1 VOUT PWR GND 24 2 UOUT WOUT 23 3 VCC2 VC 22 4 VCC3 VCREF 21 0.1µF CTRL signal CTRL reference voltage 0.2 to 0.5Ω 5 RF FC 20 0.1µF 6 VCC1 FGSEL 19 FGSEL 0.1µF LB1996 FRAME GND 0.047µF 0.047µF 0.047µF FRAME GND 7 UIN2 SIG GND 18 8 UIN1 S/S 17 9 VIN2 BRAKE 16 10 VIN1 FG 15 11 WIN2 RS 14 12 WIN1 VH 13 S/S BRAKE A11171 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. 5977-6/9 LB1996 Pin Descriptions Pin number Pin name Pin voltage Equivalent circuit Pin function 3 VCC2 4V to 13.6V Source side predrive voltage supply pin 4 VCC3 4V to 13.6V Constant current control amplifier voltage supply pin 4V to 6V Power supply pin for all circuits except output transistors, source predriver, and constant current control amplifier 6 VCC1 14 RS VCC1 10kΩ 100µA 14 15 15 FG A11172 8 7 UIN1 UIN2 VCC1 25µA 10 9 VIN1 VIN2 8 1.2V to VCC1–1V 7 200Ω 10 9 200Ω 12 25µA 12 11 11 25µA WIN1 WIN2 A11173 Reverse detector pin Forward rotation: High Reverse rotation: Low 1 Hall element or 3 Hall elements 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 VCC1 75µA 13 13 VH 30kΩ 2kΩ A11174 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. VCC1 75kΩ 17 S/S 0V to VCC1 17 50kΩ A11175 18 GND pin for all circuits except output SIG GND Control loop frequency compensator pin. Connecting a capacitor between this pin and GND prevents closed loop oscillation in current limiting circuitry. VCC1 2kΩ 20 FC 20 20kΩ 5kΩ A11176 Continued on next page No. 5977-7/9 LB1996 Continued from preceding page Pin number 21 Pin name VCREF Pin voltage Equivalent circuit VCC1 2V to 3V 25µA 22 30kΩ VC 23 WOUT 24 PWR GND 1 VOUT UOUT 0V to VCC1 25µA 15kΩ Control reference voltage supply pin. Determines control start voltage. 21 10kΩ 200Ω 22 Pin function 200Ω Speed control voltage supply pin V type control technique VC > VCREF : Forward VC < VCREF : Slowdown (Reverse-blocking circuit prevents reverse rotation.) 30kΩ 100µA 100µA A11177 2 W phase output Output transistor GND V phase output VCC2 5 3.9Ω 23 1 2 3.9Ω 5 RF 24 A11178 3 Hall FG/1 Hall FG switching pin FGSEL High –> 3 Hall FG VCC1 75kΩ 19 19 CSEL C FG U phase output Upper side output NPN 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. 50kΩ Low/Open –> 1 Hall FG A11179 Short brake pin BRAKE: High –> Short brake operation Low/Open –> Motor drive operation VCC1 100µA 16 BRAKE 75kΩ 16 50kΩ A11180 No. 5977-8/9 LB1996 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. 5977-9/9