BA6966FV_11

1/4 Structure Product Series Type Features Silicon Monolithic Integrated Circuit 1ch Sensorless Spindle Motor Driver for MD BA6966FV ・Soft-switching/sensorless driving method ・VM voltage variable control method ・Deals with double speed operation ・Startup/Brake/Standby function ・FG signal output function ・Thermal shutdown circuit ・Small package SSOP-B20 ○Absolute maximum ratings (Ta=25℃) Parameter Power supply voltage Input voltage Output current Power dissipation Operating temperature range Storage temperature range Junction temperature Symbol Vcc VIN IOMAX Pd Topr Tstg Tjmax Limit 7 0～VCC *1000 **800 -25～+75 -55～+150 +150 Unit V V mA mW ℃ ℃ ℃ ＊Must not exceed Pd or ASO, Tjmax=150℃. ＊＊Reduced by 6.4mW/°C over Ta=25°C, when mounted on a glass epoxy board (70mm×70mm×1.6mm). ○Operating conditions (Ta=-25～+75℃) Parameter Operating power supply voltage range Symbol Vcc VM Range 2.4～6.5 0～Vcc Unit V V This product described in this specification is not judged whether it applies to COCOM regulations. Please confirm in case of export. This product is not designed for protection against radioactive rays. REV. B 2/4 ○Electrical characteristics (Unless otherwise specified, Ta25°C, VCC2.7V, VM0.3V) Parameter Symbol ICCS ICC VOH1 VOH2 VOL Limit Min. － － － － － Typ. 20 4 0.85 0.2 0.25 Max. 40 5.5 1 0.35 0.35 Unit μA mA V V V STBY=L STBY=H IM=20mA VM=2.7V Io=400mA VM=VCC-1V Io=400mA Io=400mA Conditions Circuit current Output saturation voltage H1 Output saturation voltage H2 Output saturation voltage L ～Rotor position detection comparator～ Input offset voltage In-phase input voltage range ～Standby pin～ Input current Input high level voltage Input low level voltage ～Brake comparator～ Input current Input offset voltage In-phase input voltage range ～CST pin～ Charge current Discharge current Clamp H voltage Clamp L voltage ～CSL pin～ Charge current Discharge current Clamp H voltage Clamp L voltage ～ RIB pin～ Offset voltage ～ FG pin～ Output L voltage Pull-up resistance VOLF RBF － 10 0.1 20 0.25 30 V kΩ VRO － 15.5 19 mV ICLO ICLI VCLH VCLL -4 2.6 VCC-0.25 VCLH-0.75 -8.5 5.0 VCC-0.05 VCLH-0.6 -13 7.4 － VCLH-0.45 μA μA V V ICTO ICTI VCTH VCTL -1.3 2.6 0.6 0.13 -2.5 5.0 1.35 0.3 -3.7 7.4 2.1 0.57 μA mA V V CST=1V CST=1V IBR VBO VBD － -15 0 － － － 2.0 +15 VCC-1.5 μA mV V BRK=VCC IST VSTH VSTL － VCC-0.5 － 70 － － 120 VCC 0.3 μA V V STBY=VCC VCO VCD -10 0 － － +10 VCC-1.5 mV V ◎This product is not designed for protection against radioactive rays. REV. B 3/4 ○Package outlines Type BA6966FV Lot No. SSOP-B20 outlines (Unit：mm) ○Block diagram ○Pin No./Pin name No 16 VCC 11 FG Pin name UOUT RF UIN VIN WIN COM CST CSL1 CSL2 GND FG BRKBRK+ STBY RIB VCC VM N.C. WOUT VOUT Function Phase U coil output pin Output current detection pin (Power block GND) Rotor position detection comparator input pin Motor coil neutral point input pin Startup oscillation capacitor connection pin Slope capacitor connection pin Signal block GND FG output pin Brake comparator input pin Standby pin Output Tr. base current setting resistor connection pin Signal block power supply pin Motor output block power supply pin Phase W coil output pin Phase V coil output pin 1 2 3 3 ＋ UIN 4 VIN 5 ＋ WIN 6 COM 7 CST － BEMF COMPARATOR START-UP CONTROL LOGIC TIMING SELECTOR DRIVE SIGNAL COMPOSITION LOGIC － ＋ － EX-OR UPPER AND LOWER DISTRIBUTION 17 VM 1 UOUT 20 VOUT 19 WOUT 2 RF 15 RIB PRE-DRIVE STAND-BY 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 14 STBY 13 BRK+ 12 BRK- PHASE CONTROL ＋ 8 CSL1 9 CSL2 10 TSD SLOPE COMPOSITION － BRAKE COMPARATOR GND REV. B 4/4 ○Notes on the use (1) Absolute maximum ratings If the input voltage or the operating temperature range exceeds absolute maximum ratings, IC may be damaged. No destruction mode (e.g., short-circuiting or open) can be specified in that case. If such special mode as will exceed absolute maximum ratings is assumed, take the physical safety measures, such as a fuse. (2) Power supply lines The regenerated current by BEMF of the motor will return. Therefore, take measures, such as the insertion of a capacitor between the power supply and GND as the pass of the regenerated current. Determine the capacitance in full consideration of all the characteristics of the electrolytic capacitor, because the electrolytic capacitor may loose some capacitance at low temperatures. (3) Ground potential Ensure a minimum GND pin potential in all operating conditions. (4) Design for heat Use the design for heat that allows for a sufficient margin in light of the power dissipation (Pd) in actual using conditions. (5) Operation in strong magnetic field Use caution when using the IC in the strong magnetic field as doing so may cause the IC to malfunction. (6) ASO When using the IC, make settings so that the output transistors for the motor will not be used under conditions in excess of the absolute maximum ratings and ASO. (7) Thermal shutdown circuit This IC incorporates thermal shutdown circuit(TSD circuit). When the chip temperature becomes the one shown in below, TSD circuit operates and makes the coil output to motor open. It is designed to shut the IC off from runaway thermal operation. It is not designed to protect the IC or guarantee its operation. Do not continue to use the IC after operating this circuit or use the IC in an environment where the operation of this circuit is assumed. TSD ON temperature[℃] 165 (8) Ground wiring pattern When having both small signal and large current GND, it is recommended to isolate the two GND patterns, placing a single ground point at the application's reference point so that the pattern wiring resistance and voltage variations caused by large currents do not cause voltage variations of the small signal GND. Be careful not to change the GND wiring pattern of any external parts, either. (typ.) Hysteresis temperature 20 [℃ ] (typ.) REV. B Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. 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