PRODUCT DATASHEET
AAT1218
SwitchReg
TM
Pin Description
Pin #
TDFN33-12
1
2, 5
3
4
6, 7
8
9. 10
11, 12
5
3, 4
1, 2
TSOPJW-12
12
8, 11
10
9
1A, 1.2MHz Synchronous Boost Converter
Symbol
LX
NC
VIN
EN
GND
FB
OUT
PGND
Description
Switching node tied to drain of internal N-channel MOSFET and source of internal
P-channel MOSFET. Connect this pin to the external power inductor.
No connect.
Input voltage for the controller.
Input enable pin.
Non-power signal ground pin.
Feedback input pin. This pin is connected to an external resistor divider which de-
termines the output voltage setpoint.
Power ground pin. Connect this pin directly to input and output capacitors.
Output pin; connected to the positive terminal of the output capacitor and to the
external resistor divider.
Pin Configuration
TDFN33-12
(Top View)
TSOPJW-12
(Top View)
LX
N/C
VIN
EN
N/C
GND
1
2
3
4
5
6
12
11
10
9
8
7
PGND
PGND
OUT
OUT
FB
GND
PGND
PGND
OUT
OUT
FB
GND
1
2
3
4
5
6
12
11
10
9
8
7
LX
N/C
VIN
EN
N/C
GND
2
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1218.2008.10.1.1
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