1/4 STRUCTURE Silicon monolithic integrated circuits PRODUCT SERIES 3-phase motor driver for VTR capstan TYPE BA6878EFV FUNCTION ・180°, 3-phase full-wave pseudo-linear drive system ・Built-in current limit and thermal shut down circuits ○Absolute maximum ratings (Ta=25℃) Parameter Supply voltage Symbol Limit Unit VCC 7 V VM 23 Power dissipation Pd 1.1※ V Input voltage VIN 0～VCC 1 W V ※2 Maximum output current IOUT Operating temperature range Topr -25～+75 ℃ Storage temperature range Tstg -55～+150 ℃ Tjmax 150 ℃ Junction temperature 1500 mA ※1 70mm×70mm×1.6mm glass epoxy board. Derating in done at 8.8mW/℃ for operating above Ta=25℃. ※2 Do not, however exceed Pd, ASO and Tjmax=150℃. ○Recommended operating conditions (Ta= -25～+75℃) Parameter Supply voltage Hall amp in-phase input voltage range Symbol Min Typ Max Unit VCC 4.5 5.0 5.5 V VM 4.5 12 22.0 V VCH 1.5 - VCC-1.5 V This product described in this specification isn’t judged whether it applies to COCOM regulations. Please confirm in case of export. This product isn’t designed for protection against radioactive rays. REV. B 2/4 ○Electrical characteristics (Unless otherwise specified, Ta=25℃, VCC=5V, VM=12V) Parameter Symbol Limit Min Typ Max Unit Conditions CAP Drv Circuit current Hall input conversion offset Torque reference start voltage Output idling voltage Torque reference input gain Icc - 7.4 11.0 mA Heofs -6 0 6 mV ECst 2.35 2.50 2.65 V ECidle - 0 10 mV Gio 0.64 0.77 0.90 A/V Ec=GND, input LLH EC=GND Forward rotation reference voltage range VEDF - - 2.2 V Reverse rotation reference voltage range VEDR 2.8 - - V Torque limit current ITL 0.89 1.00 1.11 A RNF=0.5Ω High output voltage VOH 1.20 1.55 1.90 V IOUT=-0.8A Low output voltage 1 VOL 1.10 1.55 2.00 V IOUT=0.8A, RNF=0.5Ω,EC<4.5V Low output voltage 2 VOL2 1.05 1.50 1.95 V IOUT=0.8A, RNF=0.5Ω,EC=Vcc Voff 4.5 4.7 4.9 V FGin- input current IFGin- -21 -43 -65 μA FG Amp Gain1 GFG1 26 33 - dB f=500Hz f=30KHz Low-side saturation prevention off voltage FG Amp FG Amp Gain2 GFG2 26 33 - dB DC bias voltage VBFG 2.4 2.5 2.6 V High FG output voltage VFGH - 0.3 0.6 V IFG=-0.2mA, VFGH=Vcc-FGout Low FG output voltage VFGL - 0.2 0.5 V IFG=1mA Hysteresis width Vhys 32 46 60 mV Low hysteresis output voltage VhysL - 0.17 0.39 V Output pull-up resistance Rhys 15 20 25 kΩ Hys Amp REV. B Ihys=1mA 3/4 ○Package outline Product No. BA6878EFV Lot No. HTSSOP-B24 (Unit: mm) ○Block diagram ○Pin No. / Pin name Pin No. o u tp u t RNF A3 A1 A2 A3 VCC A2 GND A1 D iffe re n c e D iv id e r FＧ out VM M a trix S a tu ra tio n p re v e n tio n c irc u it H a ll A m p PCI H 2+ TSD + PCV ECAm p +C S A m p + V re f TL EC H 2- H 1+ + R o ta tio n d e re c tio n E D /S H 1- H 3+ Ｈ y so u t + - - + H3- F G in - V re f H ys te re s is c o m p a ra to r FG Am p N .C . N .C . N .C . N .C . REV. B Pin name 1 A3 2 Vcc 3 GND 4 FGout 5 PCI 6 PCV 7 EC 8 ED/S 9 Hysout 10 FGin- 11 N.C 12 N.C 13 N.C 14 N.C 15 H3- 16 H3+ 17 H1- 18 H1+ 19 H2- 20 H2+ 21 VM 22 A1 23 A2 24 RNF 4/4 ○Operation Notes (1) Absolute maximum ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range (Topr) may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. The implementation of a physical safety measure such as a fuse should be considered when use of the IC in a special mode where the absolute maximum ratings may be exceeded is anticipated. (2) Power supply lines Regenerated current may flow as a result of the motor's back electromotive force. Insert capacitors between the power supply and ground pins to serve as a route for 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. If the connected power supply does not have sufficient current absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a voltage clamp diode between the power supply and GND pins. (3) Ground potential Ensure a minimum GND pin potential in all operating conditions. (4) Setting of heat Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions. This IC exposes its frame of the backside of package. Note that this part is assumed to use after providing heat dissipation treatment to improve heat dissipation efficiency. Try to occupy as wide as possible with heat dissipation pattern not only on the board surface but also the backside. (5) Actions in strong magnetic field Use caution when using the IC in the presence of a strong magnetic field as doing so may cause the IC to malfunction. (6) ASO When using the IC, set the output transistor for the motor so that it does not exceed absolute maximum ratings or ASO. (7) Thermal shutdown circuit This IC incorporates a TSD (thermal shutdown) circuit (TSD circuit). If the temperature of the chip reaches the following temperature, the motor coil output will be opened. The thermal shutdown circuit (TSD circuit) is designed only to shut the IC off to prevent 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 [°C] (typ.) Hysteresis temperature [°C] (typ.) 175 25 (8) Ground Wiring Pattern When using both small signal and large current GND patterns, it is recommended to isolate the two ground 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 variations in the small signal ground voltage. Be careful not to change the GND wiring pattern of any external components, either. REV. 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