Datasheet DC Brushless Motor Drivers for Cooling Fans Two-Phase Half-Wave Pre Driver Fan Motor Driver BA6506F General description Package W (Typ.) x D (Typ.) x H (Max.) BA6506F is two-phase half-wave fan motor pre-driver. SOP8 5.00mm x 6.20mm x 1.71mm This driver incorporates lock protection, automatic restart circuit and Rotation speed pulse signal (FG) output. Features Pre-driver Incorporates lock protection and automatic restart circuit Rotation speed pulse signal (FG) output SOP8 Application For desktop PC, server, general consumer equipment, communication equipment and industrial equipment. Absolute maximum ratings Parameter Symbol Limit Unit Vcc Supply voltage 30 V *1 Power dissipation Pd 624 mW Topr Operating temperature range 40 to +100 C Tstg Storage temperature range 55 to +125 C Iomax Output current 70 mA Rotation speed pulse signal (FG) output voltage IFG 8 mA VFG Rotation speed pulse signal (FG) output current 30 V Tjmax Junction temperature 125 C *1 Reduce by 6.24mW/C over Ta=25C. (On 70.0mm70.0mm1.6mm glass epoxy board) Recommended operating conditions Parameter Symbol Limit Unit Operating supply voltage range Vcc 4.0 to 28.0 V Hall input voltage range VH 1.0Vcc-0.5 V Product structure Silicon monolithic integrated circuit This product is not designed protection against radioactive rays www.rohm.com TSZ02201-0H1H0B100490-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/12 TSZ22111 14 001 18.DEC.2012 Rev.002 BA6506F Pin configuration Pin description P/No. T/Name Function (TOP VIEW) 1 Vcc Power terminal H+ Hall input terminal + 2 VCC 1 8 A2 Rotating speed pulse signal output FG 3 terminal H+ 2 7 A1 H- Hall input terminal - 4 GND GND terminal 5 FG 3 6 LD Lock detection and automatic 6 LD restart capacitor connecting H- 4 5 GND terminal 7 A1 Output terminal 1 Fig.1 Pin configuration A2 Output terminal 2 8 Block diagram Vcc A2 1 8 REG A1 H+ HALL 2 7 AMP + LOGIC - FG LD 3 6 Lock + Detect Auto - H- GND Restart 4 5 + - Fig.2 Block diagram I/O truth table H+ H- A1 A2 FG H L H (Output Tr ON) L (Output Tr OFF) H (Output Tr OFF) L H L (Output Tr OFF) H (Output Tr ON) L (Output Tr ON) H High, L Low, Hi-Z High impedance FG output is open-drain type. Product structure Silicon monolithic integrated circuit This product is not designed protection against radioactive rays www .rohm.com TSZ02201-0H1H0B100490-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/12 TSZ22111 14 001 18.DEC.2012 Rev.002