2/23

TSZ02201-0G1G1A600030-1-2

© 2017 ROHM Co., Ltd. All rights reserved.

www.rohm.com

BD80C0AFPS-C

TSZ22111 • 15 • 001

22.Dec.2017 Rev.001

Contents

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

Features..........................................................................................................................................................................................1

Key Specifications ..........................................................................................................................................................................1

Package..........................................................................................................................................................................................1

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

Typical Application Circuit...............................................................................................................................................................1

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

Pin Configurations ..........................................................................................................................................................................3

Pin Descriptions..............................................................................................................................................................................3

Block Diagram ................................................................................................................................................................................3

Description of Blocks ......................................................................................................................................................................4

Absolute Maximum Ratings ............................................................................................................................................................5

Thermal Resistance........................................................................................................................................................................5

Operating Conditions ......................................................................................................................................................................6

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

Typical Performance Curves...........................................................................................................................................................7

Figure 1. Circuit Current vs Supply Voltage.................................................................................................................................7

Figure 2. Output Voltage vs Supply voltage ................................................................................................................................7

Figure 3. Output Voltage vs Supply voltage ................................................................................................................................7

Figure 4. Output Voltage vs Output Current (OCP characteristic) ...............................................................................................7

Figure 5. Dropout Voltage ...........................................................................................................................................................8

Figure 6. Ripple Rejection ...........................................................................................................................................................8

Figure 7. Output Voltage vs Junction Temperature .....................................................................................................................8

Figure 8. Circuit Current vs Output Current.................................................................................................................................8

Figure 9. Output Voltage vs Junction Temperature (Thermal Shutdown Circuit Characteristic) ..................................................9

Measurement Circuit for Typical Performance Curves .................................................................................................................10

Application and Implementation....................................................................................................................................................11

Selection of External Components ............................................................................................................................................ 11

Input Pin Capacitor ................................................................................................................................................................ 11

Output pin capacitor...............................................................................................................................................................12

Linear Regulators Surge Voltage Protection .............................................................................................................................13

Positive surge to the input .....................................................................................................................................................13

Negative surge to the input....................................................................................................................................................13

Linear Regulators Reverse Voltage Protection..........................................................................................................................13

Protection against Input Reverse Voltage .................................................................................................................................14

Protection against Reverse Output Voltage when Output Connect to an Inductor ....................................................................15

Power Dissipation .........................................................................................................................................................................16

TO252S-3..................................................................................................................................................................................16

Thermal Design ............................................................................................................................................................................17

Calculation Example (TO252S-3)..............................................................................................................................................17

I/O Equivalence Circuit .................................................................................................................................................................18

Operational Notes.........................................................................................................................................................................19

1. Reverse Connection of Power Supply...................................................................................................................................19

2. Power Supply Lines...............................................................................................................................................................19

3. Ground Voltage .....................................................................................................................................................................19

4. Ground Wiring Pattern...........................................................................................................................................................19

5. Operating Conditions.............................................................................................................................................................19

6. Inrush Current .......................................................................................................................................................................19

7. Thermal Consideration ..........................................................................................................................................................19

8. Testing on Application Boards ...............................................................................................................................................19

9. Inter-pin Short and Mounting Errors ......................................................................................................................................19

10. Unused Input Pins...............................................................................................................................................................19

11. Regarding the Input Pin of the IC ........................................................................................................................................20

12. Ceramic Capacitor...............................................................................................................................................................20

13. Thermal Shutdown Protection Circuit(TSD) ........................................................................................................................20

14. Over Current Protection Circuit (OCP) ................................................................................................................................20

Physical Dimension and Packing Information ...............................................................................................................................21

Ordering Information .....................................................................................................................................................................22

Marking Diagram ..........................................................................................................................................................................22

Revision History............................................................................................................................................................................23