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MCP8026 Datasheet(PDF) 20 Page - Microchip Technology |
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MCP8026 Datasheet(HTML) 20 Page - Microchip Technology |
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20 / 64 page  MCP8025/6 DS20005339B-page 20 2016 Microchip Technology Inc. 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Tables 3-1 and 3-2. TABLE 3-1: MCP8025 – PIN FUNCTION TABLE QFN TQFP Symbol I/O Description 2 1 PWM1L I Digital input, phase A low-side control, 47 k pull down 3 2 PWM1H I Digital input, phase A high-side control, 47 k pull down 4 3 CE I Digital input, device enable, 47 k pull down — 4 NC — No connection — 5 NC — No connection 5 6 LIN_BUS I/O LIN Bus physical layer — 7 PGND Power Power 0V reference 6 8 RX O LIN Bus receive data, open-drain 7 9 TX I LIN Bus transmit data 810 FAULTn/TXE I/O LIN transceiver fault and transmit enable 9 11 MUX1 I Digital input Back EMF sampler phase multiplexer control, 47 k pull down 10 12 MUX2 I Digital input Back EMF sampler phase multiplexer control, 47 k pull down 11 13 ZC_OUT O Back EMF sampler comparator output, open-drain 12 14 COMP_REF I Back EMF sampler comparator reference 13 15 ILIMIT_OUT O Current limit comparator, MOSFET driver fault output, open-drain 14 16 I_OUT1 O Motor current sense amplifier output 15 17 ISENSE1- I Motor current sense amplifier inverting input 16 18 ISENSE1+ I Motor current sense amplifier non-inverting input 17 19,20 PGND Power Power 0V reference 18 21 LSA O Phase A low-side N-channel MOSFET driver, active high 19 22 LSB O Phase B low-side N-channel MOSFET driver, active high 20 23 LSC O Phase C low-side N-channel MOSFET driver, active high — 24 PGND Power Power 0V reference 21 25 HSC O Phase C high-side N-channel MOSFET driver, active high 22 26 HSB O Phase B high-side N-channel MOSFET driver, active high 23 27 HSA O Phase A high-side N-channel MOSFET driver, active high 24 28 PHC I/O Phase C high-side MOSFET driver reference, Back EMF sense input 25 29 PHB I/O Phase B high-side MOSFET driver reference, Back EMF sense input 26 30 PHA I/O Phase A high-side MOSFET driver reference, Back EMF sense input 27 31 VBC Power Phase C high-side MOSFET driver bias 28 32 VBB Power Phase B high-side MOSFET driver bias 29 33 VBA Power Phase A high-side MOSFET driver bias 30 34 +12V Power Analog circuitry and low-side gate drive bias — 35, 36 PGND Power Power 0V reference 31 37 LX Power Buck regulator switch node, external inductor connection 32 38, 39 VDD Power Input Supply 33 40 FB I Buck regulator feedback node 34 41 +5V Power Internal circuitry bias 35 42 CAP2 Power Charge pump flying capacitor input 36 43 CAP1 Power Charge pump flying capacitor input 37 44 DE2 O Voltage and temperature supervisor output, open-drain 38 45 PWM3L I Digital input, phase C low-side control, 47 k pull down 39 46 PWM3H I Digital input, phase C high-side control, 47 k pull down 40 47 PWM2L I Digital input, phase B low-side control, 47 k pull down 1 48 PWM2H I Digital input, phase B high-side control, 47 k pull down EP EP PGND Power Exposed Pad. Connect to Power 0V reference. |
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