AAT1149 Datasheet, PDF (2/20 Pages) Advanced Analogic Technologies – 3MHz Fast Transient 400mA Step-Down Converter

AAT1149
3MHz Fast Transient
400mA Step-Down Converter
Pin Descriptions
Pin #
1
2
Symbol
EN
FB
3
IN
4
LX
5
6, 7, 8
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)
EN ¹
FB ²
IN ³
LX ⁴
8 _PGND
7 _PGND
6 _PGND
5 _AGND
2
1149.2006.11.1.0