1/4 STRUCTURE Silicon Monolithic Integrated Circuit PRODUCT SERIES 2-Phase Half-Wave Pre Driver for Fan Motor TYPE ＢＡ６４０６Ｆ FEATURES Lock detection, Automatic restart circuit 〇ABSOLUTE MAXIMUM RATINGS Parameter Symbol Limit Unit Supply voltage Vcc 30 V Power dissipation Pd 624＊ mW Operating temperature Topr -40～+100 ℃ Storage temperature Tstg -55～+125 ℃ Iomax 70 mA IAL 8 mA 30 V 125 ℃ Vcc Limit 4.0～28.0 Unit V VH 1.0～Vcc-0.5 V Output current AL signal output current VAL AL signal output voltage Tjmax Junction temperature ＊Reduce by 6.24mW/℃ over Ta=25℃ (On 70.0mm×70.0mm×1.6mm glass epoxy board) 〇OPERATING CONDITIONS Parameter Operating supply voltage range Hall input voltage range Symbol ＊This product is not designed for production against radioactive rays. REV. G 2/4 〇ELECTRICAL CHARACTERISTICS (Unless otherwise specified Ta=25℃,Vcc=12V) Parameter Symbol Min. Limit Typ. Max. Unit Conditions Icc - 3.2 5.0 mA Hall input hysteresis Vhys ±3 - ±15 mV AL output L voltage VAL - - 0.5 V IAL=5mA AL current capacity IAL 8.0 - - mA VAL=2V Charge current of capacitor for lock detection ILDC 2.0 3.45 5.25 μA VLD=1.5V Discharge current of capacitor for lock detection ILDD 0.35 0.80 1.45 μA VLD=1.5V Charge-discharge current ratio of capacitor for lock detection rCD 3 4.5 8 - Clamp voltage of capacitor for lock detection VLDCL 2.2 2.6 3.0 V Comparison voltage of capacitor for lock detection VLDCP 0.4 0.6 0.8 V VOH 10 10.5 - V Circuit current Output H voltage REV. G At output OFF rCD=ILDC/ILDD Io=10mA 3/4 〇PACKAGE OUTLINES 5.0±0.2 5 6406 1 1.5±0.1 0.11 0.3Min. 6.2±0.3 4.4±0.2 8 4 Lot No. 0.15±0.1 0.1 1.27 0.4±0.1 〇BLOCK DIAGRAM 〇Terminal name Pin No. Vcc 1 A2 8 REG H+ 2 A1 HALL AMP + - 7 LOGIC AL 3 H4 1 2 3 4 5 6 7 8 LD 6 Lock Detect Auto Restart + + GND 5 - REV. G Terminal name Vcc H+ AL HGND LD A1 A2 4/4 〇CAUTIONS ON USE 1) Absolute maximum ratings An excess in the absolute maximum rations, such as supply voltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a short circuit or an open circuit. If any over rated values will expect to exceed the absolute maximum ratings, consider adding circuit protection devices, such as fuses. 2) Connecting the power supply connector backward Connecting of the power supply in reverse polarity can damage IC. Take precautions when connecting the power supply lines. An external direction diode can be added. 3) Power supply line Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor characteristics have no problem before determine a capacitor value. (when applying electrolytic capacitors, capacitance characteristic values are reduced at low temperatures) 4) GND potential The potential of GND pin must be minimum potential in all operating conditions. Also ensure that all terminals except GND terminal do not fall below GND voltage including transient characteristics. However, it is possible that the motor output terminal may deflect below GND because of influence by back electromotive force of motor. Malfunction may possibly occur depending on use condition, environment, and property of individual motor. Please make fully confirmation that no problem is found on operation of IC. 5) Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation(Pd) in actual operating conditions. 6) Inter-pin shorts and mounting errors Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any connection error or if pins are shorted together. 7) Actions in strong electromagnetic field Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the IC to malfunction. 8) ASO When using the IC, set the output transistor so that it does not exceed absolute maximum rations or ASO. 9) Testing on application boards When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress. Always discharge capacitors after each process or step. Always turn the IC’s power supply off before connecting it to or removing it from a jig or fixture during the inspection process. Ground the IC during assembly steps as an antistatic measure. Use similar precaution when transporting or storing the IC. 10) GND 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 ground potential of application 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. 11) Capacitor between output and GND When a large capacitor is connected between output and GND, if Vcc is shorted with 0V or GND for some cause, it is possible that the current charged in the capacitor may flow into the output resulting in destruction. Keep the capacitor between output and GND below 100uF. 12) IC terminal input When Vcc voltage is not applied to IC, do not apply voltage to each input terminal. When voltage above Vcc or below GND is applied to the input terminal, parasitic element is actuated due to the structure of IC. Operation of parasitic element causes mutual interference between circuits, resulting in malfunction as well as destruction in the last. Do not use in a manner where parasitic element is actuated. REV. G 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. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. 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