Ordering number : EN5978A LB1997 Monolithic Digital IC LB1997 Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive Overview Package Dimensions The LB1997 is a three-phase brushless motor driver especially suited for CD-ROM spindle motor drives. unit: mm 3222-HSOP28 28 1.0 [LB1997] 15 7.6 0.5 1 14 0.8 2.7 0.2 0.1 1.8max 0.3 15.2 0.8 SANYO : HSOP28 Pd max – Ta 2.0 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 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 • V type control/single-side control switching pin allows CLV and CAV operation. 5.6 Functions 1.6 1.5 With substrate 1.2 0.8 IC only 0.6 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 60499RM(KI)/22699RM(KI) No. 5978-1/9 LB1997 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 0.6 W with substrate (114.3 × 76.1 × 1.6 mm3, glass exposy) 1.5 W Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings VCC1 Power supply voltage 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 VCC1 Conditions Regulated voltage VCC2 = VCC3 Unregulated voltage VCC1 = VCC3 Regulated voltage VCC2 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. 5978-2/9 LB1997 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 ICC1 VC = VCREF ICC2 VC = VCREF 0 VC = VCREF 150 ICC3 Output idle current 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 VOU1 IO = –0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V 1.0 V lower side 1 VOD1 IO = 0.5A, VCC1 = 5V, VCC2 = VCC3 = 12V 0.3 V Saturation voltage, upper side 2 VOU2 IO = –0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V 0.3 V lower side 2 VOD2 0.3 V 0.37 V Current limiter setting voltage VCL IO = 0.5A, VCC1 = VCC3 = 5V, VCC2 = 12V 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 VCC1 V 0.7 V 200 µA µA –30 [Control] IVC VC = VCREF = 2.5V 1 µA IVCREF VC = VCREF = 2.5V 1 µA Voltage gain GVCO ∆VRF/∆VC Startup voltage VCTH VCREF = 2.5V 2.35 2.65 V ∆VCTH VCREF = 2.5V 50 150 mV Startup voltage width 0.25 times [Hall power supply] Hall power supply voltage VH Allowable current IH IH = 5mA 0.8 V 20 mA [Thermal shutdown] Operating temperature Hysterisis 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 CC pin at High level VCCH 4 5 V CC pin at Low level VCCL 0 1 V [Control switching] Note: • During S/S OFF (standby), the Hall comparator is at High. • Design target values are not measured. No. 5978-3/9 LB1997 Truth Table Hall input Control Source –> Sink 1 2 Phase W –> Phase V U V W H H L H L L L L H L H L H L H L H H Phase U –> Phase W 3 Phase V –> Phase W Phase W –> Phase V 4 Phase U –> Phase V Phase V –> Phase U 5 Phase V –> Phase U Phase U –> Phase V 6 Phase U –> Phase W Phase W –> Phase U H L Phase V –> Phase W Phase W –> Phase U VC H L H L 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 RS 1 28 VH FG 2 27 WIN1 BRAKE 3 26 WIN2 S/S 4 25 VIN1 NC 5 24 VIN2 NC 6 23 UIN1 SIG GND 7 22 UIN2 FRAME GND LB1997 FRAME GND CC 8 21 VCC1 FC 9 20 RF VCREF 10 19 NC VC 11 18 VCC3 WOUT 12 17 VCC2 PWR GND 13 16 UOUT NC 14 15 VOUT Top view A11182 No. 5978-4/9 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 + – CLV/CAV switching A11181 SIG GND CC VC VCREF BRAKE VCC3 PWR GND WOUT VOUT UOUT RF VCC2 LB1997 Block Diagram Waveform distributor Matrix No. 5978-5/9 LB1997 Sample Application Circuit BRAKE S/S 1 RS VH 28 2 FG WIN1 27 3 BRAKE 0.047µF WIN2 26 4 S/S VIN1 25 5 NC 0.047µF VIN2 24 6 NC UIN1 23 7 SIG GND 0.047µF UIN2 22 LB1997 FRAME GND CC FRAME GND 8 CC VCC1 21 9 FC RF 20 10 VCREF NC 19 5V 0.1µF 0.1µF 11 VC VCC3 18 12 WOUT VCC2 17 13 PWR GND UOUT 16 14 NC VOUT 15 0.2 to 0.5Ω 12V 0.1µF 0.1µF A11183 No. 5978-6/9 LB1997 Pin Descriptions Pin number Pin name Pin voltage Equivalent circuit Pin function 17 VCC2 4V to 13.6V Source side predrive voltage supply pin 18 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 low current control amplifier 21 VCC1 1 RS Reverse detector pin Forward rotation: High Reverse rotation: Low VCC1 10 kΩ 100µA 14 15 2 1 Hall element waveform Schmitt comparator composite output FG A11184 23 22 UIN1 UIN2 VCC1 25µA 8 25 24 VIN1 VIN2 1.2V to VCC1–1V 7 200Ω 10 9 200Ω 12 25µA 27 26 11 25µA WIN1 WIN2 A11185 VCC1 75µA 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 13 28 VH 30 kΩ 2 kΩ A11186 VCC1 75 kΩ 4 S/S 0V to VCC1 17 50 kΩ 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. A11187 7 GND pin for all circuits except output SIG GND VCC1 2 kΩ 9 FC 20 20 kΩ Control loop frequency compensator pin. Connecting a capacitor between this pin and GND prevents closed loop oscillation in current limiting circuitry. 5 kΩ A11188 Continued on next page No. 5978-7/9 LB1997 Continued from preceding page Pin number 10 Pin name VCREF Pin voltage Equivalent circuit Pin function VCC1 2V to 3V 25µA 22 25µA 21 10 kΩ 200Ω 30 kΩ 15 kΩ 200Ω 30 kΩ 100µA 100µA 11 VC 0V to VCC1 A11189 12 WOUT 13 PWR GND 15 VOUT 16 UOUT Output transistor GND V phase output VCC2 5 U phase output 3.9Ω Upper side output PNP transistor collector pin (common for all 3 2 3.9Ω RF phases). For current detection, connect resistor between VCC3 pin and RF pin. Constant current control and current limiter works by detecting this voltage. 24 A11190 VCC1 75 kΩ 19 8 CC Speed control voltage supply pin V type control technique VC > VCREF : Forward VC < VCREF : Slowdown (Reverse-blocking circuit built in to prevent reverse rotation.) W phase output 23 1 20 Control reference voltage supply pin. Determines control start voltage. 8 kΩ 8 kΩ 50 kΩ V type control/single-side control switching pin CC: High –> Single-side control Low/Open –> V type control A11191 VCC1 100µA 75 kΩ 3 16 BRAKE Short brake pin BRAKE: High –> Short brake operation Low/Open –> Motor drive operation 50 kΩ A11192 No. 5978-8/9 LB1997 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. 5978-9/9