Ordering number : ENN*6231 LB11997H Monolithic Digital IC LB11997H Three-Phase Brushless Motor Driver for CD-ROM Spindle Drive Preliminary Overview Package Dimensions The LB11997H is a 3-phase brushless motor driver especially suited for CD-ROM spindle motor drives. unit: mm 3234-HSOP28H-C [LB11997H] 15.3 Functions 1 1.3 0.25 0.8 0.3 2.5max 2.25 0.85 10.5 4.9 7.9 15 0.1 • 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 drop caused by 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 (selectable, 2 steps) • Built-in Hall power supply • Built-in thermal shutdown circuit • Supports 3.3V DSP 0.65 6.2 2.7 28 SANYO : HSOP28H-C 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 81299RM(KI) No. 6231-1/8 LB11997H Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum 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 1.3 A Allowable power dissipation Pd max 0.8 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. 6231-2/8 LB11997H 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 VCL1 RRF = 0.33Ω, LMC; OPEN 0.24 V VCL2 RRF = 0.33Ω, LMC; GND 0.35 V [Hall amplifier] Common mode input voltage range Input bias current Minimum Hall input level VCC1–1.0 1.2 VHCOM µA 1 IHIB VHIN 60 High level voltage VS/SH 2.0 Low level voltage VS/SL V mVP-P [S/S pin] Input current IS/SI VS/S = 5V Leakage current IS/SL VS/S = 0V VCC1 V 0.7 V 200 µA µA –30 [Control] IVC VC = VCREF = 1.65V 1 µA VCREF pin input current IVCREF VC = VCREF = 1.65V 1 µA Voltage gain GVCO ∆VRF/∆VC Startup voltage VCTH VCREF = 1.65V 1.5 1.8 V ∆VCTH VCREF = 1.65V 50 150 mV VC pin input current Startup voltage width 0.35 times [Hall power supply] Hall power supply voltage VH Allowable current IH 0.8 IH = 5 mA 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 Note: • During S/S OFF (standby), the Hall comparator is at High. • Design target values are not measured. No. 6231-3/8 LB11997H Truth Table Hall input Control Source –> Sink Phase W –> Phase V 1 U V W H H L 2 H L L L H L H L H L H H H Phase U –> Phase W Phase V –> Phase W 3 L 4 Phase V –> Phase U Phase V –> Phase U 5 Phase U –> Phase V Phase U –> Phase W 6 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. Brake Operation Truth Table BRAKE pin Operation H Short brake Low or open Normal rotation Pin Assignment PWR-GND 1 28 VOUT WOUT 2 27 UOUT NC 3 26 VCC2 VC 4 LB11997H 25 VCC3 VCREF 5 24 NC FC 6 23 RF LMC 7 FRAME GND 22 VCC1 FRAME GND SIG-GND 8 21 UIN2 NC 9 20 UIN1 NC 10 19 VIN2 S/S 11 18 VIN1 BRAKE 12 17 WIN2 FG 13 16 WIN1 RS 14 15 VH Top view A12506 No. 6231-4/8 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 + – A12507 SIG GND LMC VC VCREF BRAKE VCC3 PWR GND WOUT VOUT UOUT RF VCC2 LB11997H Block Diagram Waveform distributor Matrix No. 6231-5/8 LB11997H Pin Description Pin number Pin name Pin voltage 26 VCC2 4V to 13.6V 25 VCC3 4V to 13.6V 22 VCC1 4V to 6V 14 RS Equivalent circuit Pin function 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 constant current control amplifier. Reverse detector pin. Forward rotation: High Reverse rotation: Low 1 Hall element waveform Schmitt comparator composite output. VCC1 10kΩ 100µA 14 13 13 FG A12508 20 21 UIN1 UIN2 VCC1 25µA 18 19 VIN1 VIN2 1.2V to VCC1–1V 20 21 200Ω 18 19 200Ω 16 25µA 16 17 17 25µA WIN1 WIN2 A12509 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 15 15 VH 30kΩ 2kΩ A12510 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 11 S/S 0V to VCC1 11 50kΩ A12511 8 GND pin for all circuits except output. SIG GND Control loop frequency characteristics compensator pin. Connecting a capacitor between this pin and GND prevents closed loop oscillation in current limiting circuitry. VCC1 2kΩ 6 FC 6 20kΩ 5kΩ A12512 Continued on next page No. 6231-6/8 LB11997H Continued from preceding page Pin number 5 Pin name VCREF Pin voltage Equivalent circuit Pin function 0V to VCC1 –1.5V 15µA 25µA 25µA VCC1 Control reference voltage supply pin. Determines control start voltage. 5 Speed control voltage supply pin. V type control technique VC > VCREF : Forward VC < VCREF : Slowdown (Reverse-blocking circuit prevents reverse rotation.) 15µA 51kΩ 200Ω 4 VC 0V to VCC1 200Ω 4 A12513 2 WOUT 1 27 PWR GND VOUT UOUT 23 RF 28 VCC2 23 3.9Ω 27 28 2 3.9Ω 1 A12514 VCC1 RF 5kΩ W phase output. Output transistor GND. V phase output. 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. When this pin is connected to GND, the limiter setting current is increased by a factor of 1.5. 7 LMC 7 15kΩ 7kΩ A12515 Short brake pin. BRAKE: High –> Short brake operation Low/Open –> Motor drive operation VCC1 100µA 75kΩ 12 BRAKE 12 50kΩ A12516 No. 6231-7/8 LB11997H 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 August, 1999. Specifications and information herein are subject to change without notice. PS No. 6231-8/8