High Power DC/DC Boost Converter
with Optional Dynamic Voltage Programming
Pin Descriptions
Pin #
1, 2
3
AAT1210
Symbol
LIN
FB1
Function
Switched power input. Connect to the power inductor.
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
2
Cwire control. Tie directly to FB2 pin for
static (fixed) output voltage.
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 S
2
Cwire control. Tie
directly to FB1 pin for static (fixed) output voltage.
Ground pin.
Power ground for the boost converter; connected to the source of the N-channel MOSFET.
Connect to the input and output capacitor return.
Boost converter switching node. Connect the power inductor between this pin and the
LIN pin.
No connection.
Input voltage for the converter. Connect this pin directly to the VP pin.
Logic high selects FB1 high output reference. Logic low selects FB2 low output reference.
Pull low for S
2
Cwire control.
Active high enable pin. Alternately, input pin for S
2
Cwire control using the FB2 reference.
Input power pin; connected internally to the source of the P-channel MOSFET. Connect
externally to the input capacitor(s).
Exposed paddle (bottom). Connected internally to the SW pins. Can be tied to bottom
side PCB heat sink to optimize thermal performance.
4
FB2
5
6, 7, 8
9, 10
11
12
13
14
15, 16
EP
GND
PGND
SW
N/C
VIN
SEL
EN/SET
VP
Pin Configuration
TDFN34-16
(Top View)
LIN
LIN
FB1
FB2
GND
PGND
PGND
PGND
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
2
1210.2007.02.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
