Ordering number : ENA1974 Bi-CMOS Integrated circuit IC 3-phase sensor-less LV8806GQ Motor Driver IC Overview LV8806GQ is a 3-phase sensor-less motor driver IC. 3-phase driver allows low power consumption and low vibration. And Hall sensor-less drive allows reduction of the size of a motor system. This IC is suitable for use in products which require high reliability and long life such as note PC fan. Functions • Built-in current limit circuit (Operates when RF resistance is 0.5Ω and Io=0.53A) • 3-phase full-wave sensor-less driver • Direct PWM input • RD (lock detection) output signal pin • FG (rotation count) output signal pin • Built-in lock protection and auto-recovery circuit • Built-in TSD (thermal shutdown) circuit Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit VCC maximum supply voltage VCC max 7 OUT pin maximum output current IOUT max 0.7 V A OUT(VO, VO, WO) pin withstand voltage VOUT max 7 V FG output pin maximum sink current IFG max 5 mA FG output pin withstand voltage VFG max 7 V RD output pin maximum sink current IRD max 5 mA RD output pin withstand voltage VRD max 7 Allowable power dissipation Pd max1 IC only Pd max2 With specified board *1 Operating temperature Topr *2 Storage temperature Tstg V 150 mW 700 mW -40 to 95 °C -55 to 150 °C *1: With specified board: 50mm×50mm×1.6mm, grass epoxy board / single layer. *2: Tjmax must not exceed 150°C Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. 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. 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. 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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. 83111 SY 20110720-S00006 No.A1974-1/6 LV8806GQ Recommended Operating Conditions at Ta = 25°C Parameter Symbol VCC supply voltage VCC Operating VCC supply voltage range VCC op PWM input frequency range fPWM Conditions Ratings Unit 5.0 V 2.0 to 6.0 V 20 to 50 kHz Electrical Characteristics at Ta = 25°C, VCC = 5.0V Parameter Circuit current Symbol Conditions Ratings min typ Unit max ICC1 PWM=5V 1.5 2.5 mA ICC2 PWM=0V 10 50 µA Output circuit ON-resistance of high-side output transistor RON(H) IO=500mA 0.5 0.9 Ω ON-resistance of low-side output transistor RON(L) IO=500mA 0.5 0.9 Ω Sum of the ON-resistance of high/low-side RON(H+L) IO=500mA 1.0 1.8 Ω -3.25 -2.50 -1.75 µA 1.75 2.50 3.25 µA output transistor Startup oscillation (OSC) pin OSC pin charge current IOSCC OSC=0V OSC pin discharge current IOSCD OSC=1.2V OSC pin High level threshold voltage VOSCTHH 1.0 1.1 1.2 V OSC pin Low level threshold voltage VOSCTHL 0.5 0.6 0.7 V PWM pin High level input voltage VPWMH 2.5 VCC V PWM pin Low level input voltage VPWML 0 1.0 PWM pin current IPWM PWM input (PWM) pin PWM pin=0V -50 -10 V µA Forward/reverse switching (F/R) pin F/R pin High level input voltage VFRH 2.5 VCC V F/R pin Low level input voltage VFRL 0 1.0 V F/R pin current IFR FR pin=5V 10 50 µA VFG IFG=3mA 0.2 0.3 V 10 µA 0.2 0.3 V 10 µA FG, RD output pin FG pin Low level voltage FG pin leakage current IFG VFG=7V RD pin Low level voltage VRD IRD=3mA RD pin leakage current IRD VRD=7V VRF Operating when RF=0.5Ω, IO=0.53A Current limiter circuit Limiter voltage 0.238 0.265 0.291 V 0.35 0.50 0.65 S S Lock protection circuit Output ON-time LT1 Output OFF-time LT2 3.2 4.5 5.9 Output ON/OFF ratio LRTO LRTO=LT2/LT1 4.9 9.0 16.8 Operating temperature TSD *Design guarantee 150 180 °C Hysteresis width ΔTSD *Design guarantee 30 °C Thermal shutdown circuit *Design guarantee: This is a design target value, which will not be measured independently. No.A1974-2/6 LV8806GQ Package Dimensions unit : mm (typ) 3341 SIDE VIEW TOP VIEW BOTTOM VIEW 0.4 2.6 (0.13) (C0.116) Allowable power dissipation, Pd max -- W (0.125) 2.6 16 0.5 2 1 (0.55) 0.25 (0.035) 0.6 SIDE VIEW Pd max -- Ta 1.0 Specified board: 50×50×1.6mm glass epoxy board single layer. 0.8 0.7 0.6 0.4 0.31 0.2 0 --40 SANYO : UCT16(2.6X2.6) -20 0 40 20 60 80 100 120 Ambient temperature, Ta -- C Block Diagram FG 10 FG PWM 11 OSC 13 RD 9 RD REFOSC SENSORLESS LOGIC F/R SWITCH START OSC PRI DRIVE 12 F/R FIL 8 5 7 COMIN 4 SELECTOR 6 3 COM 2 VCC UO VO COM WO CURR LIM 16 GND 14 TGND1 15 TGND2 1 RF No.A1974-3/6 LV8806GQ GND TGND2 TGND1 OSC Pin Assignment 16 15 14 13 12 F/R RF 1 WO 2 11 PWM LV8806GQ 5 6 7 8 FIL 9 RD COMIN UO 4 COM 10 FG VCC VO 3 Top view Pin function Pin No. 1 Symbol RF Function Equivalent circuit Output current detection pin. Drive current is 5 detectable with resistors connected to GND. 2 UO Output pin. 3 VO Connected to motor coil. 4 WO 5 VCC 2 3 4 1 IC power supply pin and motor power supply pin. A capacitor is connected between GND and this pin. 6 COM Connected to the midpoint of the motor. 7 COMIN Motor position detection comparator filter pin. A capacitor is connected between FIL (PIN8) and this pin. 8 FIL UO VO WO 6 Motor position detection comparator filter pin. A capacitor is connected between COMIN (PIN7) 7 and this pin. 9 RD Motor lock detection output pin. 9 10 Outputs High when motor is locked. 10 FG 8 FG pulse output pin. This pin outputs pulse equivalent to one Hall sensor system pulse output. 11 PWM PWM signal input pin. VCC When input voltage is High, output transistor turns on. When input voltage is Low, output transistors 11 turn off, and motor stop. By controlling duty of input signal, motor rotation count is adjustable. Motor is full-speed when pin is open. 12 F/R Switches motor rotation direction. High level voltage input: U→W→V, VCC Reverse signal Low level voltage input: U→V→W. Current flow into the motor according to the above Forward/Reverse Switching signal 12 order. Motor rotates reversely when the order of Forward signal energization is changed. Continued on next page. No.A1974-4/6 LV8806GQ Continued from preceding page. Pin No. 13 Symbol OSC Function Equivalent circuit Motor start-up frequency setting pin. VCC A capacitor is connected between this pin and GND. The start-up frequency is adjustable with a 13 capacitor and charge/discharge current (2.5µA). 14 TGND2 15 TGND1 16 GND GND pin of the IC Application Circuit Example (1)Application to Y-Connector Motor (2)Application to Delta-Connector Motor VCC VCC *2 *2 VCC VCC UO UO VO PWM *6 PWM VO WO PWM *6 PWM WO COM COM VCC COMIN F/R *3 *8 VCC *8 COMIN RD F/R *3 *6 FG *6 FG RD RF *5 TGND1 TGND2 GND *1 *4 OSC *7 *8 *8 FIL RD OSC *7 FIL FG *4 *7 RF *6 FG *6 RD *5 TGND1 TGND2 GND *1 *1. [Connection of power supply and GND] GND is connected to the power supply line of control circuit. *2. [Power supply stabilizer capacitor] The power supply stabilizer capacitor needs to be 4.7µA or higher. Connect VCC and GND as wide and short as possible. If the supply voltage increases due to the kickback of coil as a result of using reverse connection protector diode, make sure to connect Zener diode between the power supply and GND. LV8806GQ uses synchronous rectification for high efficiency drive. Synchronous rectification is effective for heat reduction and higher efficiency. However, it may increase supply voltage under the following conditions: *When output duty is reduced rapidly. *PWM input frequency is low. If the supply voltage shall increase, make sure that it does not exceed the maximum ratings with the following measures: *Select an optimal capacitor between power supply and GND. *Insert a zener diode between power supply and GND. *3. [COMIN and FIL] COMIN and FIL are the filter capacitor connection pins. LV8806GQ detects the position of rotor using BEMF signal generated during motor rotation. Based on the information, current-carrying timing of the output is determined. By inserting a filter capacitor of about 1000 to 10000pF (recommendation) between COMIN and FIL, start-up failure caused by noise is alleviated. However, if the capacitance is too high, timing of current-carrying for output may be delayed during high-speed rotation and efficiency may be degraded. Make sure that the filter capacitor is connected between COMIN and FIL as short as possible to avoid influence of noise. No.A1974-5/6 LV8806GQ *4. [OSC] Capacitor connection pin for setting boot frequency. Make sure to connect a capacitor of 500pF to 2200pF (recommendation) between this pin and GND. The capacitor is required to determine boot frequency to start motor. How to define capacitance: The capacitance should allow the shortest boot time for the target rotation count and less variation. The higher the capacitance is, the more likely the variation occurs in boot time. On the other hand, the lower the capacitance is, the more likely an idling occurs. Since an optimum value for OSC pin constant varies depends on motor characteristics and boot current, make sure to confirm the constant when motor or circuit specification are changed. *5. [RF] Current limit setting pin. When a pin voltage exceeds 0.265V, current limiter operates and the mode shifts to regeneration mode. The calculation formula is as follows. RF resistance value = 0.265V / desired current limit value *6. [Pin protection resistor] It is recommended that resistors higher than 1kΩ are connected serially to protect pins against misconnection such as GND open and reverse connection. *7. [Resistor for pseudo midpoint] Delta connector motor does not have midpoint. Therefore, we need to create a pseudo midpoint by external resistor. Please note that the amplitude of BEMF signal generated during motor rotation varies depends on motor types. Some motors require the external pseudo midpoint and others do not. *8. [FG, RD pull-up resistor] Since FG and RD are open-drain output, make sure to use pull-up resistors. It is recommended that the pull-up resistor is approximately 10kΩ. 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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 August, 2011. Specifications and information herein are subject to change without notice. PS No.A1974-6/6