DIA7976

Version 1.9, Apr 2025

www.dioo.com

© 2025 Dioo Microcircuits Co., Ltd. Jiangsu

IV

Table of Contents

1. Pin Assignment and Functions ............................................................................................................................1

2. Absolute Maximum Ratings .................................................................................................................................3

3. Recommended Operating Conditions .................................................................................................................3

4. ESD Ratings ........................................................................................................................................................4

5. Thermal Considerations ...................................................................................................................................... 4

6. Electrical Characteristics .....................................................................................................................................5

7. Typical Characteristics ........................................................................................................................................ 7

8. Block Diagram ...................................................................................................................................................10

9. Function Description ......................................................................................................................................... 12

9.1. Overview.................................................................................................................................................12

9.2. Undervoltage lockout (UVLO) ................................................................................................................ 12

9.3. Shutdown ................................................................................................................................................12

9.4. Current limit............................................................................................................................................ 12

9.5. Power-good function (PG) ......................................................................................................................13

9.6. Thermal shutdown ..................................................................................................................................13

9.7. Device functional modes ........................................................................................................................ 14

9.8. Dropout operation ...................................................................................................................................14

9.9. Disabled ..................................................................................................................................................14

10. Application Information ....................................................................................................................................15

10.1. Application examples ............................................................................................................................15

10.2. Adjustable device feedback resistors ...................................................................................................15

10.3. Dropout voltage .................................................................................................................................... 16

10.4. Exiting dropout......................................................................................................................................16

11. Physical Dimensions ....................................................................................................................................... 17

11.1. DFN2*2-6 ..............................................................................................................................................17

11.2. DFN3*3-8 ..............................................................................................................................................18

11.3. SOT23-5............................................................................................................................................... 19