AAT1149B View Datasheet(PDF) - Analog Technology Inc
Part Name
Description
MFG CO.
'AAT1149B' PDF : 17 Pages View PDF
SwitchRegTM
Pin Descriptions
PRODUCT DATASHEET
AAT1149B
2.2MHz Fast Transient 400mA Step-Down Converter
Pin #
1
2
3
4
5
Symbol
FB
EN
AGND
PGND
IN
LX
Function
Feedback input pin. Connect this pin ito the converted output voltage node.
Enable pin.
Non-power signal ground pin.
Main power ground return pins. Connect to the output and input capacitor return.
Input supply voltage for the converter.
Switching node. Connect the inductor to this pin. It is internally connected to the drain of both high- and
low-side MOSFETs.
Pin Configuration
WLCSP-5
(Top View)
FB 1 2 EN
AGND/PGND 3
IN 4 5 LX
2
www.analogictech.com
1149B.2008.07.1.0
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