AD5749

Data Sheet

Rev. D | Page 2 of 28

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Timing Characteristics ................................................................ 5

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

Typical Performance Characteristics ........................................... 10

Terminology .................................................................................... 15

Theory of Operation ...................................................................... 16

Software Mode ............................................................................ 16

Current Output Architecture.................................................... 18

Driving Inductive Loads............................................................ 18

Power-On State of the AD5749 ................................................ 18

Default Registers at Power-On ................................................. 18

Reset Function ............................................................................ 18

OUTEN........................................................................................ 18

Software Control ........................................................................ 18

Hardware Control ...................................................................... 21

Transfer Function....................................................................... 21

Detailed Description of Features.................................................. 22

Output Fault Alert—Software Mode ....................................... 22

Output Fault Alert—Hardware Mode ..................................... 22

Asynchronous Clear (CLEAR)................................................. 22

External Current Setting Resistor ............................................ 22

Programmable Overrange Modes............................................ 22

Packet Error Checking............................................................... 23

Applications Information .............................................................. 24

Transient Voltage Protection .................................................... 24

Thermal Considerations............................................................ 24

Layout Guidelines....................................................................... 25

Galvanically Isolated Interface ................................................. 25

Microprocessor Interfacing....................................................... 25

Outline Dimensions....................................................................... 26

Ordering Guide .......................................................................... 26

REVISION HISTORY

1/2018—Rev. C to Rev. D

Changed CP-32-7 to CP-32-2...................................... Throughout

Changes to Figure 1.......................................................................... 1

Changed FAULT, IFAULT, TEMP, VFAULT Parameter to

FAULT, IFAULT, TEMP Parameter; Table 2 ................................. 4

Changes to Figure 4 and Table 5..................................................... 8

Updates Outline Dimensions........................................................ 26

Changes to Ordering Guide .......................................................... 26

3/2017—Rev. B to Rev. C

Changed CP-32-2 to CP-32-7...................................... Throughout

Changes to Figure 4.......................................................................... 8

Changes to Theory of Operation Section.................................... 16

Updated Outline Dimensions....................................................... 26

Changes to Ordering Guide.......................................................... 26

10/2013—Rev. A to Rev. B

Changes to Table 4.............................................................................7

Changes to Thermal Considerations Section and Table 12...... 24

Updated Outline Dimensions....................................................... 26

7/2012—Rev. 0 to Rev. A

Changes to Figure 3...........................................................................6

Changes to Status Bit Read Operation Section........................... 21

Updated Outline Dimensions....................................................... 26

7/2010—Revision 0: Initial Version