Dual 400mA High Frequency Buck Converter
Pin Descriptions
Pin #
1
2
AAT2512
Symbol
EN1
FB1
Function
Enable pin for Channel 1. When connected low, it disables the channel and consumes
less than 1µA of current. When connected high, normal operation.
Feedback input pin for Channel 1. This pin is connected to the converter output. It is used
to see the output of the converter to regulate to the desired value via an external resistor
divider.
Ground.
Enable pin for Channel 2. When connected low, it disables the channel and consumes
less than 1µA of current. When connected high, normal operation.
Feedback input pin for Channel 2. This pin is connected to the converter output. It is used
to see the output of the converter to regulate to the desired value via an external resistor
divider.
Power switching node for Channel 2. Output switching node that connects to the output
inductor.
Input supply voltage for Channel 2. Must be closely decoupled.
Power switching node for Channel 2. Output switching node that connects to the output
inductor.
Input supply voltage for Channel 1. Must be closely decoupled.
3, 6, 7, 10
4
5
GND
EN2
FB2
8
9
11
12
LX2
VIN2
LX1
VIN1
Pin Configuration
TDFN33-12
(Top View)
EN1
FB1
GND
EN2
FB2
GND
1
2
3
4
5
6
12
11
10
9
8
7
VIN1
LX1
GND
VIN2
LX2
GND
2
2512.2006.06.1.4
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
