Ordering number : ENA1773 Monolithic Digital IC LB11685VH 3-phase sensor less Motor driver Overview The LB11685VH is a three-phase full-wave current-linear-drive motor driver IC. It adopts a sensor less control system without the use of a Hall Effect device. For quieter operation, the LB11685VH features a current soft switching circuit and be optimal for driving the cooling fan motors used in refrigerators, etc. Functions • Three-phase full-wave linear drive (Hall sensor-less method ) • Built-in three-phase output voltage control circuit • Built-in current limiter circuit • Built-in motor lock protection circuit • Motor lock protection detection output • FG output made by back EMF • Built-in thermal shut down circuit • Beat lock prevention circuit Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Conditions VCC max Input applied voltage VIN max Maximum output current IO max *1 Allowable power dissipation Pd max Operating temperature Storage temperature Junction temperature Tj max Ratings Unit 19 V -0.3 to VCC +0.3 V 1.2 A 1.4 W Topr -40 to 85 °C Tstg -55 to 150 °C 150 °C Mounted on a board *2 *1: The IO is a peak value of motor-current. *2: Specified board: 76.1mm × 114.3mm × 1.6mm, glass epoxy board. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. 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. 61610 SY 20100604-S00002 No.A1773-1/7 LB11685VH Recommended Operating Conditions at Ta = 25°C Parameter Symbol Recommended Supply voltage VCC Operating supply voltage VCC op Conditions Ratings Unit 12.0 V 4.5 or 18.0 V Electrical Characteristics at Ta = 25°C, VCC = 5.0V Parameter Symbol Ratings Conditions min Supply current ICC FC1 = FC2 = 0V Internal regulate voltage VREG Output voltage (source) VOSOUR IO = 0.8A *3 Output voltage (sink) VOSINK IO = 0.8A *3 Current limiter VOLIM MCOM pin VINCOM typ 5 3.0 Unit max 10 20 mA 3.3 3.6 V 1.3 1.7 V 0.5 1.3 V 0.300 0.332 V 0 VCC - 2 V 0.268 common-input voltage range ICOM+ MCOM = 7V 30 80 μA ICOM- MCOM = 7V 30 80 μA RTCOM RTCOM = ICOM+ / ICOM- 0.6 1.4 VCO input bias current IVCO VCO = 2.3V VCO oscillation minimum fVCOmin VCO = 2.1V, CX = 0.015μF Design target *2 930 Hz fVCOmax VCO = 2.7V, CX = 0.015μF 8.6 kHz MCOM pin Source current for hysteresis MCOM pin Sink current for hysteresis MCOM pin hysteresis current ratio frequency VCO oscillation maximum frequency 0.2 μA Design target *2 CX charge / discharge current ICX CX hysteresis voltage ΔVCX VCO = 2.5V, CX = 1.6V C1 (C2) charge current IC1(2)+ VCO = 2.5V, C1(2) = 1.3V C1 (C2) discharge current IC1(2)- VCO = 2.5V, C1(2) = 1.3V 12 C1 (C2) charge / discharge RTC1(2) RTC1(2) = IC1(2)+ / IC1(2)- 0.8 μA 70 100 140 0.35 0.55 0.75 12 20 28 μA 20 28 μA 1.0 1.2 current ratio C1/C2 charge current ratio RTCCHG RTCCHG = IC1+ / IC2+ 0.8 1.0 1.2 C1/C2 discharge current ratio RTCDIS RTCDIS = IC1- / IC2- 0.8 1.0 1.2 C1 (C2) cramp voltage width VCW1(2) 1.0 1.3 1.6 V V FG output low level voltage VFGL IFG = 3mA 0.5 RD output low level voltage VRDL IRD = 3mA 0.5 Thermal shut down operating TTSD Junction temperature ΔTTSD Junction temperature temperature *1 Thermal shut down hysteresis 150 v 180 °C 15 °C Design target *2 temperature *1 Design target *2 *1: The thermal shut down circuit is built-in for protection from damage of IC. But its operation is out of Topr. Design thermal calculation at normal operation. *2: Design target value and no measurement is made. *3: The IO is a peak value of motor-current. No.A1773-2/7 LB11685VH Package Dimensions unit : mm (typ) 3222A 0.5 5.6 7.6 15 14 1 2.0 0.2 (1.5) 1.7max 0.3 (0.7) 0.1 2.7 Allowable power dissipation, Pd max -- W 28 0.8 Pd max - Ta 2.0 15.0 Specified circuit board : 114.3 ×76.1 × 1.6mm3 glass epoxy board 1.5 1.40 1.0 0.73 0.5 0 -40 -20 0 20 40 60 80 100 Ambient temperature, Ta -- C SANYO : HSOP28(275mil) Pin Assignment CX 1 28 (NC) C1 2 27 VCO C2 3 26 (NC) FC2 4 25 RD FC1 5 24 (NC) VOH 6 23 FG REG 7 22 SGND VCC 8 21 MCOM RF 9 20 PGND (NC) 10 19 (NC) (NC) 11 18 (NC) WOUT 12 17 (NC) (NC) 13 16 UOUT VOUT 14 15 (NC) No.A1773-3/7 LB11685VH Block Diagram 28 1 2 3 Soft Switching VCO Low Voltage Control 26 PLL 4 5 27 25 Torque Ripple Rejection & Current Limit FG 24 23 6 7 Motor Lock Detector 22 TSD Power On Reset + - Bandgap 8 Reference Voltage Start Up & Mask Timing 21 Output Switching Control 9 20 10 Distributor 19 11 Pre Drive 18 12 17 13 16 14 15 No.A1773-4/7 LB11685VH Pin Function Pin No. Pin name 16 UOUT 12 WOUT 14 VOUT 20 PGND Function Equivalent circuit Each output pin of three phases. Pin No.9 GND pin in the output part. This pin is connected to GND. The SGND pin is also Pin No.16,14,12 connected to GND 9 RF Pin to detect output current. By connecting a resistor between this pin and VCC, the Pin No.20 output current is detected as a voltage. The current limiter is operated by this voltage. 21 MCOM Motor coil midpoint input pin. The coil voltage waveform is detected based on this voltage. SGND SGND SGND VCC VCC Pin No.21 SGND 22 SGND SGND Ground pin (except the output part) This pin is connected to GND. The PGND pin is also connected to GND. 23 FG FG out made by back EMF pin. It synchronizes FG out with inverted V-phase. When don’t use this function, open this pin. 25 RD Pin No.23 No.25 Motor lock protection detection output pin. SGND Output with L during rotation of motor. SGND Open during lock protection of motor (High-impedance). When don’t use this function, open this pin. 27 VCO PLL output pin and VCO input pin. To stabilize PLL output, connect a capacitor between this VREG pin and GND. VCC Pin No.27 VREG SGND VREG SGND 1 CX VCO oscillation output pin. Operation frequency range and minimum frequency are VREG determined by the capacity of the capacitor connected to this pin. VCC Pin No.1 SGND SGND Continue to the next page. No.A1773-5/7 LB11685VH Continue from the former page. Pin No. Pin name Function 2 C1 Soft switching adjustment pin. 3 C2 The triangular wave from is form formed by connecting a Equivalent circuit capacitor with this pin. VCC And, the switching of three-phase output is adjusted by the slope. Pin No.2 3 SGND SGND 4 FC2 Frequency characteristic correction pin 2. VREG To suppress the oscillation of control system closed loop of sink-side, connect a capacitor between this pin and GND. VCC Pin No.4 SGND SGND 5 FC1 Frequency characteristic correction pin 1. VCC To suppress the oscillation of control system closed loop of source-side, connect a capacitor between this pin and Pin No.5 GND. SGND SGND 6 VOH Three-phase output high level output pin. VCC To stabilize the output voltage of this pin, connect a capacitor between this pin and the VCC pin. VCC Pin No.6 SGND SGND 7 VREG DC voltage (3.3V) output pin. VCC Connect a capacitor between this pin and GND for VCC stabilization. Pin No.7 SGND SGND 19 VCC Pin to supply power-supply voltage. To curb the influence of ripple and noise. The voltage should be stabilized. No.A1773-6/7 LB11685VH Application Circuit Example * Each fixed number in the following FIG, is the referential value. VCC 1 28 2 27 3 26 4 25 5 24 6 23 7 22 8 21 9 20 10 19 11 18 12 17 13 16 14 15 VDD VDD FAN MOTOR SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor 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 Semiconductor Co.,Ltd. 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. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of June, 2010. Specifications and information herein are subject to change without notice. PS No.A1773-7/7