1

CPL

24

DECAY

2

CPH

23

TRQ

3

VCP

22

M1

4

VM

21

M0

5

AOUT1

20

DIR

6

PGND

19

STEP

7

AOUT2

18

ENABLE

8

BOUT2

17

nSLEEP

9

PGND

16

RREF

10

BOUT1

15

nFAULT

11

VM

14

DVDD

12

GND

13

AVDD

Not to scale

Thermal

Pad

3

DRV8886

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SLVSDA4 – JANUARY 2017

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(1)

I = input, O = output, PWR = power, OD = open-drain

5 Pin Configuration and Functions

PWP PowerPAD™ Package

24-Pin HTSSOP

Top View

Pin Functions

PIN

DESCRIPTION

NAME

NO.

AOUT1

5

O

Winding A output. Connect to stepper motor winding.

AOUT2

7

AVDD

13

PWR

Internal regulator. Bypass to GND with a X5R or X7R, 0.47-µF, 6.3-V ceramic capacitor.

BOUT1

10

O

Winding B output. Connect to stepper motor winding.

BOUT2

8

CPH

2

PWR

Charge pump switching node. Connect a X5R or X7R, 0.022-µF, VM-rated ceramic capacitor from CPH to CPL.

CPL

1

DECAY

24

I

Decay-mode setting. Sets the decay mode (see the Decay Modes section). Decay mode can be adjusted during operation.

DIR

20

I

Direction input. Logic level sets the direction of stepping; internal pulldown resistor.

DVDD

14

PWR

Internal regulator. Bypass to GND with a X5R or X7R, 0.47-µF, 6.3-V ceramic capacitor.

ENABLE

18

I

Enable driver input. Logic high to enable device outputs; logic low to disable; internal pulldown resistor.

GND

12

PWR

Device ground. Connect to system ground.

M0

21

I

Microstepping mode-setting. Sets the step mode; tri-level pins; sets the step mode; internal pulldown resistor.

M1

22

PGND

6

PWR

Power ground. Connect to system ground.

9

RREF

16

I

Current-limit analog input. Connect a resistor to ground to set full-scale regulation current.

STEP

19

I

Step input. A rising edge causes the indexer to advance one step; internal pulldown resistor.

TRQ

23

I

Current-scaling control. Scales the output current; tri-level pin.

VCP

3

PWR

Charge pump output. Connect a X5R or X7R, 0.22-µF, 16-V ceramic capacitor to VM.

VM

4

PWR

Power supply. Connect to motor supply voltage and bypass to GND with two 0.01-µF ceramic capacitors (one for each pin)

plus a bulk capacitor rated for VM.

11

nFAULT

15

OD

Fault indication. Pulled logic low with fault condition; open-drain output requires an external pullup resistor.

nSLEEP

17

I

Sleep mode input. Logic high to enable device; logic low to enter low-power sleep mode; internal pulldown resistor.