DA9220 datasheet(3/62 Pages) DIALOG

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DA9220

High-Performance Dual-Channel DC-DC Converter

Datasheet

Revision 2.1

17-Sep-2020

CFR0011-120-00

3 of 62

Contents

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

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

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

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

Contents ............................................................................................................................................... 3

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

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

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 I/O Characteristics.................................................................................................... 12

3.8

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

3.9

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

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 .................................................................................................................... 26

4.2.3.1

GPIO Pin Assignment...................................................................... 26

4.2.3.2

GPIO Function ................................................................................. 26

4.2.3.3

Chip Configuration Select (CONF) .................................................. 28

4.2.3.4

OTP Reload (RELOAD)................................................................... 29

4.3

Operating Modes................................................................................................................. 29

4.3.1

ON........................................................................................................................ 29

4.3.2

OFF...................................................................................................................... 29

4.4

I2C Communication ............................................................................................................. 29

4.4.1

I2C Protocol.......................................................................................................... 30

Register Definitions .................................................................................................................... 32

5.1

Register Map ....................................................................................................................... 32

5.1.1

System ................................................................................................................. 34

5.1.2

Buck1 ................................................................................................................... 47

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