01W148A 3-phase full-wave fan motor driver IC BA6425FS Description BA6425FS is a 3-phase full-wave fan motor driver IC. Noise generated by the motor can be reduced by linear driving system. Forward/reverse rotation can be switched. This IC has current limit circuit and FG output. Dimension (Units : mm) 0.11 Features 1) Linear driving system 2) Forward/reverse select switch 3) Built-in current limiter and thermal shut down 4) FG output 17 1 16 0.3Min. 1.8 ± 0.1 7.8 ± 0.3 5.4 ± 0.2 13.6 ± 0.2 32 0.8 0.36 ± 0.1 0.15 ± 0.1 0.1 SSOP-A32 Applications 3-phase full-wave fan motor Absolute Maximum Ratings (Ta=25˚C) Symbol Limits Unit Maximum supply voltage Maximum supply voltage Vcc VM 18 18 V V Power dissipation Pd 0.95 Parameter Operating temperature range Topr –30 Storage temperature range Tstg –55 ~ ~ ∗1 +75 Output current Iomax +150 ∗2 1000 Junction temperature Tjmax 150 ∗1 Derating : 7.6mW/˚C for operation above Ta=25˚C. ∗2 However, do not exceed Pd, and ASO. W ˚C ˚C mA ˚C PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. April, 2002 Recommended Operating Conditions (Ta=25˚C) Parameter Symbol Min. Typ. Max. Unit VCC VM VCH 5 3.5 1.1 — — — 17 17 ∗3 VCC–1.0 V V V Operating supply voltage range Operating supply voltage range Hall Amp in-phase voltage range ∗If VM voltage is low, this IC may not be able to flow the output current by absolute maximum ratings. Electrical characteristics (Unless otherwise noted: Ta=25˚C, Vcc=VM=12V) Parameter Symbol Min. Typ. Max. Unit ICC 3.7 6.0 mA µA V VCC circuit current IM — — 76 120 Output saturation voltage H VOH 0.8 1.21 1.6 Output saturation voltage L VOL 0.35 0.55 0.75 V Hall bias current H1 IBH1 –4.0 — 2.0 µA Hall bias current H2, H3 IBH2 — — 2.0 Input-converted offset voltage ISD –10 — 10 µA mV Current limit voltage VCL 0.38 0.5 0.62 V FR bias current IFRL –2.0 — 0 Forward input voltage range Reverse input voltage range FG output L voltage FG hysteresis width VFRH 7.5 VCC µA V VM circuit current VFRL 0 — — VFGL VHYS — ±8 — ±18 Conditions Output : Open, Input : HLH Output : Open, Input : HLH IO=350mA IO=350mA RNF=0.5Ω RNF=0.5Ω V 4.5 0.2 V mV ±28 IO=2mA Application Circuit VM A2 A1 A3 RNF A1 A2 A3 Driver PCV Output saturation prevent + — Current limit AMP Differential divide Forward/ Reverse select Signal combiner FG TSD FG BA6425FS VCC H1+ H1- HALL 1 H2+ HALL 2 H2- H3+ HALL 3 H3- FR GND PCI