Datasheet

 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