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BD6709FS Dataheets PDF



Part Number BD6709FS
Manufacturers Rohm
Logo Rohm
Description DC Brushless Fan Motor Drivers
Datasheet BD6709FS DatasheetBD6709FS Datasheet (PDF)

TECHNICAL NOTE DC Brushless Motor Drivers for Cooling Fans Speed Controllable Single-phase Full-wave DC Brushless Fan Motor Drivers BD6709FS, BD6718FV, BD6721FS, BD6722FS ●Description This is the summary of models that suit for 12V speed controllable fan for desktop PC and general consumer equipment. They employ Bi-CDMOS process, and realize low ON resistance, low power consumption. They incorporate lock protection and automatic restart circuit, current limiting circuit. ●Features 1) Power Tr i.

  BD6709FS   BD6709FS



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TECHNICAL NOTE DC Brushless Motor Drivers for Cooling Fans Speed Controllable Single-phase Full-wave DC Brushless Fan Motor Drivers BD6709FS, BD6718FV, BD6721FS, BD6722FS ●Description This is the summary of models that suit for 12V speed controllable fan for desktop PC and general consumer equipment. They employ Bi-CDMOS process, and realize low ON resistance, low power consumption. They incorporate lock protection and automatic restart circuit, current limiting circuit. ●Features 1) Power Tr incorporated (BD6709FS、BD6721FS) 2) Pre-driver compatible for external Tr (BD6718FV) 3) Low side power Tr incorporated half pre-driver (BD6722FS) 4) Current limiting circuit 5) PWM soft switching driver (BD6721FS、BD6722FS) 6) Soft start circuit (BD6722FS) 7) Lock protection and automatic restart circuit 8) Rotating speed pulse signal (FG) output 9) Lock alarm signal (AL) output (BD6718FV、BD6721FS、BD6722FS) ● Application For 12V fan for desktop PC, server and general consumer equipment ●Lineup 12V speed controllable single-phase full-wave Soft switching not available Soft switching available Power Tr incorporated BD6709FS Pre-driver BD6718FV Power Tr incorporated BD6721FS Half pre-driver BD6722FS Jan. 2007 ●Absolute Maximum Ratings ◎BD6709FS Parameter Symbol Supply voltage Vcc Power dissipation Pd Operation temperature Topr Storage temperature Tstg Output current Iomax FG signal output current IFG FG signal output voltage VFG Junction temperature Tjmax * Reduce by 6.5mW/℃ over 25℃. (On 70.0mm×70.0mm×1.6mm glass epoxy board) ** This value is not to exceed Pd. ◎BD6718FV Parameter Symbol Supply voltage Vcc Power dissipation Pd Operation temperature Topr Storage temperature Tstg High side output voltage VOH Low side output voltage VOL Low side output current Iomax FG signal output current IFG FG signal output voltage VFG AL signal output current IAL AL signal output voltage VAL VREF current ability IVREF HB current ability IHB Junction temperature Tjmax * Reduce by 6.5mW/℃ over 25℃. (On 70.0mm×70.0mm×1.6mm glass epoxy board) ◎BD6721FS Parameter Symbol Supply voltage Vcc Power dissipation Pd Operation temperature Topr Storage temperature Tstg Output current Iomax FG signal output current IFG FG signal output voltage VFG AL signal output current IAL AL signal output voltage VAL VREF current ability IVREF Junction temperature Tjmax * Reduce by 6.5mW/℃ over 25℃. (On 70.0mm×70.0mm×1.6mm glass epoxy board) ** This value is not to exceed Pd. Limit 17 812.5* -40~+95 -55~+150 1.2** 10 15 150 Limit 15 812.5* -40~+95 -55~+150 36 15 20 8 15 8 15 4 8 150 Limit 20 812.5* -40~+100 -55~+150 1.0** 10 20 10 20 8 150 2/40 Unit V mW ℃ ℃ A mA V ℃ Unit V mW ℃ ℃ V V mA mA V mA V mA mA ℃ Unit V mW ℃ ℃ A mA V mA V mA ℃ ◎BD6722FS Parameter Symbol Supply voltage Vcc Power dissipation Pd Operation temperature Topr Storage temperature Tstg High side output voltage VOH Low side output voltage VOL Low side output current Iomax Signal output current IFG/IAL Signal output voltage VFG/VAL VREF current ability IVREF VTH input voltage VVTH Junction temperature Tjmax * Reduce by 6.5mW/℃ over 25℃. (On 70.0mm×70.0mm×1.6mm glass epoxy board) ** This value is not to exceed Pd. Limit 20 812.5* -40~+100 -55~+150 34 34 1.5** 10 20 8 15 150 Unit V mW ℃ ℃ V V A mA V mA V ℃ ●OPERATING CONDITIONS ◎BD6709FS Parameter Operating supply voltage range Hall input voltage range ◎BD6718FV Parameter Operating supply voltage range Hall input voltage range ◎BD6721FS Parameter Operating supply voltage range Hall input voltage range VTH input voltage range VMIN input voltage range ◎BD6722FS Parameter Operating supply voltage range Hall input voltage range VMIN input voltage range Symbol Vcc VH Limit 6.0~14.0 0.5~Vcc-1.5 Symbol Vcc VH Limit 4.5~14.0 0~Vcc-2.0 Unit V V Unit V V Symbol Vcc VH VVTH VVMIN Limit 5.0~17.0 0~Vcc-2.0 0~Vcc-2.0 0~Vcc-2.0 Symbol Vcc VH VVMIN Limit 5.0~17.0 0~Vcc-2.0 0~Vcc-2.0 Unit V V V V Unit V V V 3/40 ●ELECTRICAL CHARACTERISTICS(Unless otherwise specified Ta=25℃,Vcc=12V) ◎BD6709FS Parameter Circuit current Hall input hysteresis Output low voltage Symbol Limit Min. Typ. Max. Icc 3.0 6.0 9.0 VHYS ±5 ±10 ±15 VOL - 0.2 0.3 Output high voltage VOH - 0.2 0.3 Lock detection ON time Lock detection OFF time FG output low voltage FG output leak current OSC low voltage OSC high voltage OSC frequency Level amp gain Level amp output low voltage TON 0.30 0.50 0.70 TOFF 2.5 4.0 5.5 VFGL - - 0.3 IFGL - - 50 VOSCL 1.5 2.0 2.5 VOSCH 3.0 3.5 4.0 FOSC - 25 * - GLA 50 - - VLAOL - 0.9 1.2 Level amp output high voltage VLAOH - 1.2 1.5 VREF voltage CL-CS offset voltage VREF 4.0 4.4 4.8 Vcofs - - 30 * This voltage is reference, not guarantee. Unit Conditions Characteristics mA Fig.1 mV Fig.2 V Io=200mA Fig.3,4 Io=-200mA V Voltage between output and Fig.5,6 Vcc sec Fig.7 sec Fig.8 V IFG=5mA .


SFW045XS1-R BD6709FS BD6718FV


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