PRODUCT DATASHEET
AAT1276
SwitchRegTM
Boost Converter with USB Power Switch
Pin Descriptions
Pin #
TSOPJW-12
TDFN34-16 Symbol Description
1
2
3
4
5
6
1, 16
3, 15
13, 14
11, 12
10
LIN
IN
PGND
SW
OUT1
OUT2
Switched power input. Connect an inductor between this pin and the SW pin.
Supply input. Connect to VCC for proper operation.
Power ground.
Switch pin. Boost inductor is connected between SW and LIN.
Boost converter output.
9
Load switch output.
Load switch current limit programming pin. Connect a set resistor between this pin and
ground.
7
8
8
7
SET
FLT
Load switch over-current or over-temperature fault flag. Active low, open-drain output. A
10kΩ external pull-up resistor is recommended.
9
6
5
4
FB
GND
VCC
EN
Boost converter voltage feedback pin.
Ground.
Bias supply for the internal circuitry. Connect to IN for proper operation.
Enable pin, active high.
10
11
12
2
EP
Exposed paddle (bottom); connect to ground directly beneath the package.
Pin Configuration
TSOPJW-12
(Top View)
TDFN34-16
(Top View)
1
2
3
4
5
6
7
8
16
15
14
13
LIN
LIN
EN
1
2
3
4
5
6
12
11
10
9
LIN
IN
EN
IN
VCC
GND
FB
IN
PGND
PGND
PGND
SW
VCC
GND
FB
12 SW
8
OUT1
OUT2
FLT
SET
SW
11
7
10
FLT
SET
OUT1
OUT2
9
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1276.2007.11.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
