MP6509 – 2.7V-TO-18V, 1.2A STEPPER MOTOR DRIVER

MP6509 Rev.1.0

www.MonolithicPower.com

9

8/28/2014

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PIN FUNCTIONS

Pin #

Name

Description

1

nSLEEP

Sleep Mode Input. Logic low to enter low-power sleep mode. Internal pull down.

2

AOUT1

Bridge A Output Terminal 1.

3,8

NC

Not Connected.

4

SENA

Bridge A Sense Resistor Connector. Connect to current sensor resistor for bridge A

5

AOUT2

Bridge A Output Terminal 2.

6

BOUT2

Bridge B Output Terminal 2.

7

SENB

Bridge B Sense Resistor Connector. Connect to current sensor resistor for bridge B.

9

BOUT1

Bridge B Output Terminal 1.

10

FAULT

Fault Indication. Open-drain output type, logic low when in fault condition (OCP, OTP).

11

BIN1

Gate signal input to control BOUT1.

12

BIN2

Gate signal input to control BOUT2.

13

ATT2

Current Attenuation Mode Select. See applications notes for details. ATT1, ATT2 set

the current setting reference voltage attenuation ratio –100%, 80%, 50%, 20%. Internal

pull down.

14

ATT1

15

BST

Charge Pump Output. Connect a 10nF-to-100nF ceramic capacitor to VIN.

16

VIN

Power Supply Input. Ranges from 2.7V to 18V.

17

GND

Ground.

18

VDD

Internal control and logic supply voltage.

19

AIN2

Gate signal input to control AOUT2.

20

AIN1

Gate signal input to control AOUT1.