PRODUCT DATASHEET
AAT2514
SwitchReg
TM
Pin Descriptions
Pin #
1
2
3
4
5
6
8
9
10
Dual Channel 600mA Step-Down Converter
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 feed-
back threshold voltage is 0.6V.
Channel 1 enable pin. Active high. In shutdown, all functions are disabled drawing <1μA supply current.
Do not leave EN1
fl
oating.
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 cur-
rent. Do not leave EN2
fl
oating.
Feedback input for channel 2. Connect FB2 to the center point of an external resistor divider. The feed-
back 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 pack-
age 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
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2514.2008.02.1.1
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