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).
IC active high enable pin. Alternately, input pin for S Cwire control uti-
2
2
3
14
13
EN/SET
SEL
lizing FB2 reference.
Logic high selects FB1 high output reference; logic low selects FB2 low
2
output reference. Pull low for S Cwire control.
4
5
6, 7
12
11
9, 10
VIN
N/C
SW
Input voltage for the converter. Connect this pin directly to the VP pin.
No connection.
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
10
5
4
GND
FB2
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
2
1.2V with S Cwire 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 S Cwire
control.
Switched power input. Connected to the power inductor.
Exposed paddle (bottom). Tied to SW pins. May be connected to SW
pins or left floating.
2
12
N/A
1, 2
EP
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
1230.2007.06.1.6
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
