AAT1154
1MHz 3A Buck DC/DC Converter
Pin Descriptions
Pin #
Symbol
Function
1
FB
Feedback input pin. This pin must be connected to the converter’s
output. It is used to set the output of the converter to regulate to the
desired value.
2
3
GND
EN
Ground connection.
Enable input pin. When connected high, AAT1154 is in normal
operation. When connected low, it is powered down. This pin
should not be left floating.
4
VCC
VP
Power supply. It supplies power for the internal circuitry.
Input Supply Voltage for converter power stage.
5, 8
6, 7
LX
Inductor connection pins. These pins should be connected to the
output inductor. Internally, pins 6 & 7 are connected to the drain of
the P-channel switch.
Pin Configuration
SO-8
1
8
VP
LX
LX
VP
FB
2
3
4
7
6
5
GND
EN
VCC
2
1154.2003.08.0.91
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
