AP1021 datasheet(5/24 Pages) AKM

5 / 24 page

[AP1021]

015000428-E-00

2015/01

- 5 -

■ Pin Functions

No.

Name

Type

(

Note 1)

I/O

(

Note 2)

Function

Remark

OUT1A A

Motor driver output

2, 3

IS1

Current sense terminal

OUT1B

Motor driver output

5, 20

Motor driver power supply

OUT2A A

Motor driver output

7, 8

IS2

Current sense terminal

OUT2B

Motor driver output

Chip Enable (Power save)

200k Pull-down

TEST1

TEST pin. This pin must be connected

to the ground.

VIS

Motor current set voltage input

VREF

Voltage reference

Logic voltage output capacitor

connection

Control power supply

OUT4B

Motor driver output

17, 18

IS4

Current sense terminal

OUT4A A

Motor driver output

OUT3B

Motor driver output

22, 23

IS3

Current sense terminal

OUT3A A

Motor driver output

SCK

Control data clock

SDI

Control data input

CSN

Chip select

SDO

Control data output

OE12

OUT1/2 Output Enable when SELOE

OE34

OUT3/4 Output Enable when SELOE

TEST2

TEST pin. This pin must be connected

to the ground.

Charge-pump output voltage

Exposed

Pad

GND

Ground

(Note 3)

Note 1.

A(analog pin), D(digital pin), GND(ground pin), P(power pin)

Note 2.

I(input pin), O(output pin), IO(input/output pin)

Note 3.

Exposed Pad must be connected to GND.

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