AAT4290/4291
I/O Expander Load Switches with Serial Control
General Description
The AAT4290 and AAT4291 SmartSwitch鈩?prod-
ucts are members of AnalogicTech鈥檚 Application
Specific Power MOSFET鈩?(ASPM鈩? product
family. The AAT4290 and AAT4291 are five and
three P-channel MOSFETs, respectively, config-
ured for use as a microprocessor I/O expander.
Having independent drain outputs and a common
source input, they operate with an input voltage
ranging from 1.8V to 5.5V, making them ideal for
2.5V, 3.3V, or 5V systems, as well as systems pow-
ered by lithium-ion/polymer batteries. Each switch
features a 500ns turn-on time. The switch states
are controlled by a Simple Serial Control鈩?/div>
(S
2
Cwire鈩? interface which permits ease of control
and efficiency of size. The quiescent supply cur-
rent is very low, typically 5碌A(chǔ). In shutdown mode,
the supply current is reduced to less than 1碌A(chǔ).
The AAT4290 and AAT4291 are offered in an 8 pin
SC70JW package specified over the -40擄C to
+85擄C temperature range.
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
SmartSwitch
鈩?/div>
鈥?/div>
鈥?/div>
1.8V to 5.5V Input Voltage Range
5 or 3 Independent Load Switches
Optional 200碌S Slew Rate Control
S
2
Cwire Interface
1.1鈩?R
DS(ON)
Per Switch
Low Quiescent Current
鈥?5碌A(chǔ)
鈥?0.1碌A(chǔ) in Shutdown
-40擄C to +85擄C Temperature Range
8-Pin SC70JW Package
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Cell Phones
I/O Expansion
Multiple Low Power Switching
Personal Communication Devices
Portable Electronic Devices
Typical Application
INPUT
IN
OUT1
OUT2
OUT1
OUT2
OUT3
OUT4
OUT5
AAT4290
EN/SET
EN/SET
OUT3
OUT4
OUT5
GND
C
IN
1碌F
C
OUT1
0.1碌F
C
OUT2
0.1碌F
C
OUT3
0.1碌F
C
OUT4
0.1碌F
C
OUT5
0.1碌F
GND
GND
4290.2005.01.1.0
1
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AAT4290IJS-1-T1 產(chǎn)品屬性
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