Dual Channel 600mA Step-Down Converter
Pin Descriptions
Pin #
1
2
3
4
5
6
8
9
10
AAT2514
Symbol
FB1
EN1
IN
LX1
GND
N/C
POR
EN2
FB2
EP
Function
Feedback input for channel 1. Connect FB1 to the center point of an external resistor divider.
The feedback threshold voltage is 0.6V.
Channel 1 enable pin. Active high. In shutdown, all functions are disabled drawing <1µA sup-
ply current. Do not leave EN1 floating.
Power supply input pin. Must be closely decoupled to GND with a 2.2µF or greater ceramic
capacitor.
Channel 1 switching node pin. Connect the output inductor to this pin.
Ground
No connection
Power-on reset, active low. Open drain. External resistor (100kΩ) is required.
Channel 2 enable pin. Active high. In shutdown, all functions are disabled drawing <1µA
supply current. Do not leave EN2 floating.
Feedback input for channel 2. Connect FB2 to the center point of an external resistor divider.
The feedback threshold voltage is 0.6V.
Exposed paddle. The exposed paddle should be connected to board ground plane and GND.
The ground plane should include a large exposed copper pad under the package for thermal
dissipation (see package outline).
Pin Configuration
AAT2514-IDE
TDFN33-10
(Top View)
FB1
EN1
IN
LX1
GND
1
2
3
4
5
EXPOSED PAD
10
9
8
7
6
FB2
EN2
POR
LX2
NC
10-Lead (3mm X 3mm) Plastic Thin DFN
Exposed Pad is PGND
Must be connected to GND.
2
2514.2007.06.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
