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L6235 数据表(PDF) 7 Page - STMicroelectronics |
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L6235 数据表(HTML) 7 Page - STMicroelectronics |
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7 / 35 page  DocID7618 Rev 2 7/35 L6235 Pin connections 35 Package Name Type Function SO24/ PowerDIP24 PowerSO36 Pin no. Pin no. 6, 7, 18, 19 1, 18, 19, 36 GND GND Ground terminals. On PowerDIP24 and SO24 packages, these pins are also used for heat dissipation toward the PCB. On PowerSO36 package the slug is connected on these pins. 822 TACHO Open drain output Frequency-to-voltage open drain output. Every pulse from pin H1 is shaped as a fixed and adjustable length pulse. 9 24 RCPULSE RC pin RC network pin. A parallel RC network connected between this pin and ground sets the duration of the monostable pulse used for the frequency-to-voltage converter. 10 25 SENSEB Power supply Half-bridge 3 source pin. This pin must be connected together with pin SENSEA to power ground through a sensing power resistor. At this pin also the inverting input of the sense comparator is connected. 11 26 FWD/REV Logic input Selects the direction of the rotation. HIGH logic level sets forward operation, whereas LOW logic level sets reverse operation. If not used, it has to be connected to GND or +5 V. 12 27 EN Logic input Chip enable. LOW logic level switches OFF all Power MOSFETs. If not used, it has to be connected to +5 V. 13 28 VREF Logic input Current controller reference voltage. Do not leave this pin open or connect to GND. 14 29 BRAKE Logic input Brake input pin. LOW logic level switches ON all high- side Power MOSFETs, implementing the brake function. If not used, it has to be connected to +5 V. 15 30 VBOOT Supply voltage Bootstrap voltage needed for driving the upper Power MOSFETs. 16 32 OUT3 Power output Output 3. 17 33 VSB Power supply Half-bridge 3 power supply voltage. It must be connected to the supply voltage together with pin VSA. 20 4 VSA Power supply Half-bridge 1 and half-bridge 2 power supply voltage. It must be connected to the supply voltage together with pin VSB. 21 5 OUT2 Power output Output 2. 22 7 VCP Output Charge pump oscillator output. 23 8 H2 Sensor input Single ended hall effect sensor input 2. 24 9 H3 Sensor input Single ended hall effect sensor input 3. Table 4. Pin description (continued) |
类似零件编号 - L6235 |
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类似说明 - L6235 |
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