MCT8317A datasheet(5/161 Pages) TI1

5 / 161 page

Table 6-1. Pin Functions (continued)

40-pin

Package

TYPE(1)

DESCRIPTION

NAME

MCT8317A

DIR

Direction of motor spinning;

When low, phase driving sequence is OUT A → OUT C → OUT B

When high, phase driving sequence is OUT A → OUT B → OUT C

If DIR pin is not used, connect to AGND or AVDD directly (depending on phase driving

sequence needed).

If DIR pin is used for changing motor spin direction, use an external 100-kΩ pull-down resistor

(to AGND).

DVDD

PWR

1.5-V internal regulator output. Connect a X5R or X7R, 2.2-µF, 6.3-V ceramic capacitor

between the DVDD and DGND pins.

EXT_CLK

External clock reference input in external clock reference mode.

EXT_WD

External watchdog input.

Motor speed indicator output. Open-drain output requires an external pull-up resistor to 1.8-V

to 5-V.

ILIMIT

Connect resistor to AGND for parameter configuration.

nFAULT

Fault indicator. Pulled logic-low with fault condition; Open-drain output requires an external

pull-up resistor to 1.8-V to 5-V.

OUTA

11,12

PWR O

Half-bridge output A

OUTB

14, 15

PWR O

Half-bridge output B

OUTC

17, 18

PWR O

Half-bridge output C

PGND

10, 13, 16, 19

GND

Device power ground.

SCL

I2C clock input

SDA

I/O

I2C data line

SPEED/

WAKE

Device speed input; supports analog, frequency or PWM speed input. The speed pin input

can be configured through SPD_CTRL_MODE.

VIN_AVDD

PWR I

Input supply for AVDD LDO

8, 9, 20, 21

PWR I

Device and motor power supply. Connect to motor supply voltage; bypass to PGND with a

0.1-µF capacitor plus one bulk capacitor. TI recommends a capacitor voltage rating at least

twice the normal operating voltage of the device.

Thermal pad

GND

Must be connected to AGND

(1)

I = input, O = output, GND = ground pin, PWR = power, NC = no connect

www.ti.com

MCT8317A

SLLSFQ2 – JANUARY 2023

Submit Document Feedback

Product Folder Links: MCT8317A

MCT8317A датащи(PDF) 5 Page - Texas Instruments

MCT8317A датащи(HTML) 5 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL