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Número de pieza
componentes Descripción
AAT4291 Ver la hoja de datos (PDF) - Advanced Analogic Technologies
Número de pieza
componentes Descripción
Fabricante
AAT4291
I/O Expander Load Switches with Serial Control
Advanced Analogic Technologies
AAT4291 Datasheet PDF : 12 Pages
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AAT4290/91
I/O Expander Load Switches with Serial Control
Applications Circuits
V
SUPPLY
1.8 to 5.5V
GPIO 1
System
µ
Controller
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).
V
BATTERY
ON/OFF
CLOCK
AAT3110IJS-5.0
SC70JW-8: 2x2mm
VIN
VOUT
10
µ
F
C+
AAT4291IJS
SC70JW-8: 2x2mm
IN
10
µ
F
OUT1
OUT2
OUT3
SHDN
1
µ
F
C-
GND
EN/SET
GND
RGB LED
R
G
B
R
R
R
G
R
B
Figure 2: RGB LED Control
(eliminates three discrete MOSFET switches).
4290.2006.03.1.2
11
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