BH6799FVM-GTR ROHM

Datasheet DC Brushless Fan Motor Driver 5V Single-phase Full wave Fan motor driver BH6799FVM Description This is the summary of models that suit for notebook PC cooling fan motor. They employ Bi-CMOS process and realize low ON resistance, low power consumption and quiet drive. Features Package(s) W(Typ.) x D(Typ.) x H(Max.) MSOP8 2.90mm x 4.00mm x 0.90mm Compact package (MSOP8) BTL soft switching drive Constant voltage output for hall element Lock protection and auto restart (without external capacitor) Rotating speed pulse signal (FG) output Application Compact 5V fan such as notebook PC cooling fan MSOP8 Absolute maximum ratings Symbol Limit Unit Parameter Supply voltage Vcc 7 V Power dissipation Pd 585* mW Operating temperature Topr -40 to +105 Storage temperature Tstg -55 to +150 Output current Iomax 1000** mA FG signal output voltage Vfg 7 V FG signal output current Ifg 5 mA Junction temperature Tjmax 150 * Reduce by 4.68mW/ over Ta=25C(70.0mm70.0mm1.6mm glass epoxy board) ** This value is not to exceed Pd Operating conditions Symbol Limit Unit Parameter Operating supply voltage range Vcc 2.0 to 6.0 V Vh 0.4 to Vcc-1.1 V Hall input voltage range Product structureSilicon monolithic integrated circuit This product is not designed protection against radioactive rays w ww.rohm.com TSZ02201-0H1H0B100120-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/10 TSZ2211114001 11.Jul.2012 Rev.001Datasheet BH6799FVM Electrical characteristics(Unless otherwise specified Ta=25,Vcc=5V) Limits Parameter Symbol Unit Conditions Characteristics Min. Typ. Max. Circuit current Icc - 5 8 mA Fig.1 Input offset voltage Vhofs - - 6 mV - Io250mA Output voltage Vo - 0.32 0.49 V Fig.2,3 Upper and Lower total Input-output Gain Gio 45 48 51 dB - FG low voltage Vfgl - - 0.3 V Ifg=3mA Fig.4 Input hysteresis voltage Vhys 5 10 15 mV Fig.5 Lock detection ON time Ton 0.35 0.50 0.65 s Fig.6 Lock detection OFF time Toff 3.5 5.0 6.5 s Fig.7 Hall bias voltage Vhb 1.1 1.3 1.5 V Ihb=5mA Fig.8 Truth table H+ H- OUT1 OUT2 FG H L H L L(Output TrON) L H L H H(Output TrOFF) www.rohm.com TSZ02201-0H1H0B100120-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/10 TSZ2211115001 11.Jul.2012 Rev.001