First line: AAT1 149A SwitchRegTMAbstract: .. AAT1149A. 2.2MHz Fast Transient 400mA 400mA Step-Down Converter SwitchRegTM. PRODUCT DATASHEET. 1149A 1149A .2008.08.1.1 1 w w w . a n a l o g i c t e c h . c o m. General Description The AAT1149A SwitchReg is a 2.2MHz .. Tags: datasheet abstract..