AAT3190
Positive/Negative Charge Pump for Voltage Bias
Pin Description
Pin #
MSOP-8
TSOPJW-12
Symbol
FBP
Function
Positive charge pump feedback input. Regulates to 1.2V
nominal. Connect feedback resistive divider to analog
ground (GND).
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.
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.
Negative charge pump regulator feedback input. Regulates
to 0V nominal. Connect feedback resistive divider to the
reference (REF).
Positive charge pump driver output. Output high level is V
IN
and low level is PGND.
Ground.
Negative charge pump driver output. Output high level is
V
IN
and low level is PGND.
Input voltage: 2.7V to 5.5V.
1
5
2
4
EN
3
3
REF
4
2
FBN
5
6
7
8
12
8, 9, 10, 11
7
1
DRVP
GND
DRVN
VIN
Pin Configuration
MSOP-8
(Top View)
TSOPJW-12
(Top View)
FBP
EN
REF
FBN
1
8
VIN
DRVN
GND
DRVP
2
7
3
6
4
5
VIN
FBN
REF
EN
FBP
N/C
1
2
3
4
5
6
12
11
10
9
8
7
DRVP
GND
GND
GND
GND
DRVN
1
2
2
3190.2006.01.1.2
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
