AAT1276 Datasheet, PDF (2/18 Pages) Advanced Analogic Technologies – Boost Converter with USB Power Switch

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