 2010 - 2015 Microchip Technology Inc.

DS00001692C-page 3

USB251xB/xBi

Table of Contents

1.0 Introduction ..................................................................................................................................................................................... 4

2.0 Block Diagram ................................................................................................................................................................................. 6

3.0 Pin Information ................................................................................................................................................................................ 7

4.0 Battery Charging Support ............................................................................................................................................................. 17

5.0 Initial Interface/Configuration Options ........................................................................................................................................... 19

6.0 DC Parameters ............................................................................................................................................................................. 39

7.0 AC Specifications .......................................................................................................................................................................... 44

8.0 Package Marking Information ....................................................................................................................................................... 46

9.0 Package Information ..................................................................................................................................................................... 48

Appendix A: Acronyms ........................................................................................................................................................................ 50

Appendix B: References ..................................................................................................................................................................... 51

Appendix C: Data Sheet Revision History .......................................................................................................................................... 52

The Microchip Web Site ...................................................................................................................................................................... 54

Customer Change Notification Service ............................................................................................................................................... 54

Customer Support ............................................................................................................................................................................... 54

Product Identification System ............................................................................................................................................................. 55