HA13536F Datasheet | Hitachi Semiconductor

Description The HA13536F is a 3-phase brushless DC motor driver IC with digital speed control. It is being developed for direct drive of the spindle motor of 5 V floppy disk drives with a height of 3/4" or less. It has the following functions and features . Functions - - - - - - 1.0 A per phase, 3-phase drive circuit (current driver) Digital speed control circuit FG Amp Index circuit Current limiter circuit Over-temperature shutdown circuit (OTSD) Features - Low saturation voltage, typically 1.15 V (at 0.7 A) - Soft switching drive circuit - No need for an output snubber circuit Pin Arrangement U phase - input U phase + input VCC V phase V phase W phase W phase + - + - input input input input 20 19 18 21 22 23 24 TAB 17 16 15 14 13 12 11 TAB 10 9 8 7 Hall bias Bias - pin Bias + pin Bias output U phase output V phase output Current detection AGC Index + input Index - input FG + input 25 26 27 28 1 2 3 TAB 4 5 6 W phase output Phase pensation Charge pump output CLK input - input RPM SEL Index adjust (Top view) Index Vreg Index output CE Block Diagram VCC C102 25 R101 Hu R102 Hv 19 20 21 22 Hw 23 24 Hi 26 27 3 Rt1 Ct 4 Rt2 17 - 16 C104 15 CE 6 CLK 7 1 MHz 1.6 V FG 60 ppr C103 TAB Note : Pin arrangement is preliminary specification. 28 1 FG Amp. + - Speed discriminator Charge pump Bias Vref2 u (+) u (-) v (+) v (-) w (+) w (-) (+) Control Amp. (-) Index circuit OTSD - + Current limitter Vref1 9 5 Index output (Open collector) C106 11 W 10 Rnf Hall Amp Matrix U Output Amp V 13 C105 14 18 VCC 5V C101 + Buffer Amp. 2 8 C1 RPM select H: 360 rpm L: 300 rpm C2...