AAT3190
Positive/Negative Charge Pump for Voltage Bias
Pin Description
Pin #
MSOP-8
TSOPJW-12
Symbol
Function
1
5
FBP
Positive charge pump feedback input. Regulates to 1.2V
nominal. Connect feedback resistive divider to analog
ground (GND).
2
3
4
5
4
EN
Enable input. When EN is pulled low, the device shuts off
and draws only 1.0µA. When high, it is in normal opera-
tion. Drive EN through an external resistor.
3
REF
FBN
DRVP
Internal reference bypass terminal. Connect a 0.1µF capac-
itor from this terminal to analog ground (GND). External
load capability to 50µA. REF is disabled in shutdown.
2
Negative charge pump regulator feedback input. Regulates
to 0V nominal. Connect feedback resistive divider to the
reference (REF).
12
Positive charge pump driver output. Output high level is VIN
and low level is PGND.
6
7
8, 9, 10, 11
7
GND
Ground.
DRVN
Negative charge pump driver output. Output high level is
VIN and low level is PGND.
8
1
VIN
Input voltage: 2.7V to 5.5V.
Pin Configuration
MSOP-8
(Top View)
TSOPJW-12
(Top View)
1
8
VIN
FBP
1
2
3
4
5
6
12
11
10
9
VIN
FBN
REF
EN
FBP
N/C
DRVP
GND
GND
GND
GND
DRVN
2
7
6
5
EN
DRVN
GND
3
REF
8
7
4
FBN
DRVP
2
3190.2006.01.1.2
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
