●Description of Change
■In the page 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, and 16 of the datasheet, the bottom board layout is removed because it is not necessary.
■In the page 15, 17, 18, 19, 20, 21, and 22 of the datasheet, the bottom board layout is removed because it is not necessary. And the via hole placement is presented in the layout image with a note, ‘The ground via holes must be placed close to the lead pin 2 and 4 within 0.1 mm’.
●Reason for Change
■To simplify PCB information by eliminating unnecessary bottom board layout.
■ To provide the PCB layout information with the via hole placement in detail.
●Impact of the Change on Fit, Form, Function, Quality, and Reliability
■The changes do not impact form, fit, function, quality, and reliability.
●Summary
■The changes described above are reflected in the following product data sheet.
▲Part Number: AST54S

Brand of Product：	ASB
Part#：	AST54S More Part#
Product Category：	More
Application：	More
Data Type：	PCN/EOL More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	July 10, 2023
Version Number：
Data Encoding：	PCN23004
Data Size：	364 KB
Effective Date：	July 10, 2023
Type of Change：	Datasheet Updates