1MHz 3A Step-Down DC/DC Converter
Pin Descriptions
Pin #
1
AAT1154
Symbol
FB
Function
Feedback input pin. This pin must be connected to the converter
output. It is used to set the converter output to regulate to the
desired value.
Ground connection.
Enable input pin. When connected high, the AAT1154 is in normal
operation; when connected low, it is powered down. This pin
should not be left floating.
Power supply: supplies power for the internal circuitry.
Input supply voltage for converter power stage.
Inductor connection pins. These pins should be connected to the
output inductor. Internally, Pins 6 and 7 are connected to the drain
of the P-channel switch.
2
3
GND
EN
4
5, 8
6, 7
VCC
VP
LX
Pin Configuration
SOP-8
FB
GND
EN
VCC
1
8
VP
LX
LX
VP
1
2
2
7
3
6
4
5
2
1154.2006.09.1.6
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
