DA9141

High-Performance, 25 A/40 A Peak, DC-DC Converter

Datasheet

Revision 1.6

25-Aug-2021

CFR0011-120-00

2 of 46

© 2021 Dialog Semiconductor

Contents

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

Key Features ........................................................................................................................................ 1

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

1

Terms and Definitions................................................................................................................... 5

2

Block Diagram ............................................................................................................................... 6

3

Pinout ............................................................................................................................................. 7

4

Characteristics .............................................................................................................................. 9

4.1

Absolute Maximum Ratings .................................................................................................. 9

4.2

Electrostatic Discharge Ratings ............................................................................................ 9

4.3

Recommended Operating Conditions ................................................................................... 9

4.4

Thermal Characteristics ...................................................................................................... 10

4.5

Buck1 Characteristics ......................................................................................................... 10

4.6

Performance and Supervision Characteristics.................................................................... 12

4.7

Digital IO Characteristics..................................................................................................... 12

4.8

Timing Characteristics......................................................................................................... 13

5

Functional Description ............................................................................................................... 14

5.1

Operating Modes................................................................................................................. 14

5.1.1

ON........................................................................................................................ 14

5.1.2

OFF...................................................................................................................... 14

5.2

DC-DC Buck Converter....................................................................................................... 14

5.2.1

Switching Frequency ........................................................................................... 14

5.2.2

Operation Modes and Phase Selection ............................................................... 14

5.2.3

Output Voltage Selection ..................................................................................... 15

5.2.4

Soft Startup and Shutdown.................................................................................. 15

5.2.5

Current Limit ........................................................................................................ 15

5.2.6

Temperature Protection ....................................................................................... 16

5.3

Control Circuits.................................................................................................................... 16

5.3.1

Chip Enable and Disable ..................................................................................... 16

5.3.2

GPIO .................................................................................................................... 17

5.3.3

Interrupt................................................................................................................ 19

5.4

I2C Communication ............................................................................................................. 21

5.4.1

I2C Protocol.......................................................................................................... 21

6

Register Definitions .................................................................................................................... 23

6.1

Register Map ....................................................................................................................... 23

6.2

Register Descriptions .......................................................................................................... 25

6.2.1

Buck1 ................................................................................................................... 36

6.2.2

OTP Control ......................................................................................................... 40

7

Package Information ................................................................................................................... 42

7.1

Package Outlines ................................................................................................................ 42

7.2

Moisture Sensitivity Level.................................................................................................... 43

7.3

Soldering Information .......................................................................................................... 43

8

Ordering Information .................................................................................................................. 44

9

Layout Guidelines ....................................................................................................................... 45