AAT1149 View Datasheet(PDF) - Advanced Analogic Technologies
Part Name
Description
MFG CO.
'AAT1149' PDF : 21 Pages View PDF
SwitchRegTM
PRODUCT DATASHEET
AAT1149
3MHz Fast Transient 400mA Step-Down Converter
Pin Descriptions
Pin #
SC70JW-8 WLCSP
1
2
2
1
3
4
4
5
5
3
6, 7, 8
Symbol
EN
FB
IN
LX
AGND
PGND
Function
Enable pin.
Feedback input pin. This pin is connected to an external resistive divider for an adjustable
output.
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.
Non-power signal ground pin.
Main power ground return pins. Connect to the output and input capacitor return.
Pin Configuration
SC70JW-8
(Top View)
WLCSP-5
(Top View)
EN 1
FB 2
IN 3
LX 4
8 PGND
7 PGND
6 PGND
5 AGND
FB 1 2 EN
AGND/PGND 3
IN 4 5 LX
2
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1149.2008.08.1.3
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