DA9217

High-Performance Dual-Phase DC-DC Converter

Datasheet

Revision 2.0

18-Sep-2020

CFR0011-120-00

3 of 48

© 2020 Dialog Semiconductor

Contents

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

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

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

System Diagrams ................................................................................................................................ 2

1

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

2

Pinout ............................................................................................................................................. 6

3

Characteristics .............................................................................................................................. 8

3.1

Absolute Maximum Ratings .................................................................................................. 8

3.2

Recommended Operating Conditions ................................................................................... 8

3.3

Thermal Characteristics ........................................................................................................ 9

3.3.1

Thermal Ratings .................................................................................................... 9

3.3.2

Power Dissipation .................................................................................................. 9

3.4

ESD Characteristics .............................................................................................................. 9

3.5

Buck Characteristics ........................................................................................................... 10

3.6

Performance and Supervision Characteristics.................................................................... 11

3.7

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

3.8

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

3.9

Typical Performance ........................................................................................................... 14

4

Functional Description ............................................................................................................... 18

4.1

DC-DC Buck Converter....................................................................................................... 18

4.1.1

Switching Frequency ........................................................................................... 18

4.1.2

Operation Modes and Phase Selection ............................................................... 18

4.1.3

Output Voltage Selection ..................................................................................... 19

4.1.4

Soft Start-Up and Shutdown ................................................................................ 19

4.1.5

Current Limit ........................................................................................................ 19

4.1.6

Thermal Protection .............................................................................................. 20

4.2

Internal Circuits ................................................................................................................... 21

4.2.1

IC_EN/Chip Enable/Disable................................................................................. 21

4.2.2

nIRQ/Interrupt ...................................................................................................... 21

4.2.3

GPIO .................................................................................................................... 24

4.3

Operating Modes................................................................................................................. 26

4.3.1

ON........................................................................................................................ 26

4.3.2

OFF...................................................................................................................... 26

4.4

I2C Communication ............................................................................................................. 26

4.4.1

I2C Protocol.......................................................................................................... 26

5

Register Definitions .................................................................................................................... 29

5.1

Register Map ....................................................................................................................... 29

5.1.1

System ................................................................................................................. 31

5.1.2

Buck1 ................................................................................................................... 39

5.1.3

Serialization ......................................................................................................... 43

6

Package Information ................................................................................................................... 44

6.1

Package Outlines ................................................................................................................ 44

6.2

Moisture Sensitivity Level.................................................................................................... 45

6.3

WLCSP Handling ................................................................................................................ 45