DA9233

Integrated Ultra-Low Quiescent Current, Ultra-Low

Output Ripple Buck Regulator with 100 mA LDO

Datasheet

Revision 2.2

13-Jun-2023

CFR0011-120-00 Rev 5

2 of 50

© 2023 Renesas Electronics

Contents

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

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

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

Contents ............................................................................................................................................... 2

Figures.................................................................................................................................................. 3

Tables ................................................................................................................................................... 4

1

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

2

Block and Application Diagrams ................................................................................................. 6

3

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

4

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

5

Recommended Operating Conditions....................................................................................... 10

6

ESD Ratings ................................................................................................................................. 11

7

Electrical Characteristics ........................................................................................................... 12

8

Thermal Characteristics ............................................................................................................. 16

9

Typical Operating Characteristics ............................................................................................. 17

9.1

Buck No Load Quiescent Current vs Temperature, Device is Switching............................ 17

9.2

Buck FETs RDSon vs Temperature.................................................................................... 17

9.3

Buck Efficiency vs Load Current ......................................................................................... 18

9.4

LDO VOUT Accuracy............................................................................................................. 19

9.5

LDO Load Transient Response .......................................................................................... 20

9.6

LDO PSRR .......................................................................................................................... 21

10 Feature Descriptions................................................................................................................... 22

10.1 Chip Enable and Disable Through IC_EN .......................................................................... 22

10.2 VDD Under-Voltage Lockout............................................................................................... 22

10.3 Over-Temperature Protection ............................................................................................. 22

10.4 Buck Regulator.................................................................................................................... 22

10.4.1

Buck Output Voltage Programmability................................................................. 22

10.4.2

Start-up Operation ............................................................................................... 23

10.4.3

Power Saving Mode Operation............................................................................ 24

10.4.4

Dynamic Voltage Control ..................................................................................... 24

10.4.5

Cycle-by-cycle Over-Current Protection .............................................................. 24

10.4.6

Output Over-Voltage Protection .......................................................................... 24

10.4.7

Output Under-Voltage Protection ........................................................................ 24

10.4.8

Automatic Output voltage Discharge ................................................................... 25

10.4.9

Event Flag and Fault Control............................................................................... 25

10.5 Load Switch, LDO Output and Control................................................................................ 26