AAT1230/1230-1
18V 100mA Step-Up Converter
Pin Descriptions
Pin #
TSOPJW-12
TDFN34-16
Symbol
Function
1
15, 16
VP
Input power pin; connected to the source of the P-channel MOSFET.
Connect to the input capacitor(s).
2
3
14
13
EN/SET
SEL
IC active high enable pin. Alternately, input pin for S2Cwire control uti-
lizing FB2 reference.
Logic high selects FB1 high output reference; logic low selects FB2 low
output reference. Pull low for S2Cwire control.
Input voltage for the converter. Connect this pin directly to the VP pin.
No connection.
4
5
12
11
VIN
N/C
SW
6, 7
9, 10
Boost converter switching node. Connect the power inductor between
this pin and LIN pin.
8
6, 7, 8
PGND
Power ground for the boost converter; connected to the source of the
N-channel MOSFET. Connect to the input and output capacitor return.
Ground pin.
9
5
4
GND
FB2
10
Feedback pin for low output voltage set point. Pin set to 0.6V when
SEL is low and disabled when SEL is high. Voltage is set from 0.6V to
1.2V with S2Cwire control.
11
3
FB1
LIN
Feedback pin for high output voltage set point. Pin set to 1.2V when
SEL is high and disabled when SEL is low. Disabled with S2Cwire
control.
12
1, 2
EP
Switched power input. Connected to the power inductor.
Exposed paddle (bottom). Tied to SW pins. May be connected to SW
pins or left floating.
N/A
Pin Configuration
TSOPJW-12
(Top View)
TDFN34-16
(Top View)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VP
VP
EN/SET
SEL
VIN
N/C
SW
SW
LIN
LIN
FB1
FB2
1
2
3
4
5
6
12
VP
EN/SET
SEL
LIN
11
10
9
FB1
FB2
GND
PGND
SW
VIN
N/C
SW
GND
PGND
PGND
PGND
8
7
2
1230.2006.10.1.4
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
