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LB1991V Datasheet(PDF) 4 Page - Sanyo Semicon Device |
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LB1991V Datasheet(HTML) 4 Page - Sanyo Semicon Device |
4 / 7 page Pin No. Pin Equivalent circuit Pin function Supply voltage for all circuits other than the IC internal output block and the amplitude control block. VCC1 1 No. 5792-4/7 LB1991V Pin Functions Supply voltage for the IC internal output control block and the amplitude control block. VCC2 2 Motor drive power supply. The voltage applied to this pin must not exceed VCC2. VS 3 U phase output V phase output (These outputs include built-in spark killer diodes.) W phase output UOUT VOUT WOUT 5 7 9 Ground for the output power transistors Rf 6, 8 Hall element bias voltage supply A voltage that is typically 0.95 V is generated between the VH+ and VH– pins. (When IH is 5 mA.) VH+ VH– 10 11 Ground for circuits other than the output transistor The Rf pin potential is the lowest output transistor potential. GND 13 Forward/reverse selection. Applications can select motor forward or reverse direction rotation using this pin. (This pin has hysteresis characteristics.) FRC 14 U phase Hall element input The logic high level is the state where the IN+ voltage is greater than the IN- voltage. V phase Hall element input The logic high level is the state where the IN+ voltage is greater than the IN- voltage. W phase Hall element input The logic high level is the state where the IN+ voltage is greater than the IN- voltage. UIN1 UIN2 VIN1 VIN2 WIN1 WIN2 16 17 18 19 20 21 Selects the bias supply for all circuits other than the FG comparators. The bias supply is cut when this pin is set to the low level. STBY 15 Hall input/output gain control. The gain is controlled by the resistor connected between this pin and ground. ANGLE 12 FG comparator noninverting inputs. There is no internally applied bias. FGIN+ 22 FG comparator inverting inputs. There is no internally applied bias. FGIN– 23 FG comparator outputs. There is an internal 20-k Ω resistor load. FGOUT 24 |
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