AAT4290IJS-1-T1(2005) 查看數據表（PDF） - Advanced Analogic Technologies
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AAT4290IJS-1-T1
(Rev.:2005)
(Rev.:2005)
Advanced Analogic Technologies
AAT4290IJS-1-T1 Datasheet PDF : 12 Pages
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AAT4290/4291
I/O Expander Load Switches with Serial Control
Applications Circuits
VSUPPLY
1.8 to 5.5V
GPIO 1
System
µController
GPIO 2
GPIO 3
GPIO 4
GPIO 5
AAT4290
IN
OUT1
EN/SET
OUT2
OUT3
OUT4
OUT5
GPIO 2
to
GPIO 5
are now free for
other uses
Function 1
EN 1
Function 2
EN 2
Function 3
EN 3
Function 4
EN 4
Function 5
EN 5
Figure 1: GPIO I/O Expander
(condense five GPIO control lines to one).
VBATTERY
ON/OFF
CLOCK
AAT3110IJS-5.0
SC70JW8: 2x2mm
VIN
VOUT
10µF
C+
AAT4291IJS
SC70JW8: 2x2mm
IN
10µF
OUT1
OUT2
OUT3
SHDN
1µF
C-
GND
EN/SET
GND
R/G/B LED
R
G
B
RR
RG
RB
Figure 2: RGB LED Control
(eliminates three discrete MOSFET switches).
4290.2005.01.1.0
11
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