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Part Number AAT4291

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SmartSwitch
TM
AAT4290/4291
I/O Expander Load Switches with Serial Control
4290.2005.01.1.0
1
General Description
The AAT4290 and AAT4291 SmartSwitchTM prod-
ucts are members of AnalogicTech's Application
Specific Power MOSFETTM (ASPMTM) 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 ControlTM
(S
2
CwireTM) interface which permits ease of control
and efficiency of size. The quiescent supply cur-
rent is very low, typically 5µA. In shutdown mode,
the supply current is reduced to less than 1µA.
The AAT4290 and AAT4291 are offered in an 8 pin
SC70JW package specified over the -40°C to
+85°C temperature range.
Features
·
1.8V to 5.5V Input Voltage Range
·
5 or 3 Independent Load Switches
·
Optional 200µS Slew Rate Control
·
S
2
Cwire Interface
·
1.1
R
DS(ON)
Per Switch
·
Low Quiescent Current
-- 5µA
-- 0.1µA in Shutdown
·
-40°C to +85°C Temperature Range
·
8-Pin SC70JW Package
Applications
·
Cell Phones
·
I/O Expansion
·
Multiple Low Power Switching
·
Personal Communication Devices
·
Portable Electronic Devices
Typical Application
OUT1
AAT4290
OUT2
OUT3
OUT4
OUT5
IN
EN/SET
GND
C
OUT1
C
OUT2
C
OUT3
C
OUT4
C
OUT5
C
IN
1
µ
F
0.1
µ
F
0.1
µ
F
0.1
µ
F
0.1
µ
F
0.1
µ
F
INPUT
EN/SET
GND
OUT1
OUT2
OUT3
OUT4
OUT5
GND
Pin Descriptions
Pin Configuration
AAT4290
AAT4291
(SC70JW-8)
(SC70JW-8)
N/C
N/C
EN/SET
OUT3
OUT2
OUT1
GND
IN
1
2
3
4
5
6
7
8
OUT2
OUT1
EN/SET
OUT3
OUT4
OUT5
GND
IN
1
2
3
4
5
6
7
8
Pin #
AAT4290
AAT4291
Symbol
Function
1
1
IN
Input power supply is connected to the P-channel MOSFETs
sources. Connect a 1µF capacitor from IN to GND.
2
7
OUT2
P-channel MOSFET drain.
3
6
OUT1
P-channel MOSFET drain.
4
4
EN/SET
Input control pin using S
2
Cwire serial interface. The device
records rising edges of the clock and decodes them into 32
states (8 states for AAT4291) which controls the ON/OFF
states of the MOSFETs. See Table 1 and Table 2 for out-
put settings.
5
5
GND
Ground connection.
6
N/A
OUT5
P-channel MOSFET drain.
7
N/A
OUT4
P-channel MOSFET drain.
8
8
OUT3
P-channel MOSFET drain.
AAT4290/4291
I/O Expander Load Switches with Serial Control
2
4290.2005.01.1.0
Absolute Maximum Ratings
1
Notes:
1: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional conditions at
conditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any
one time.
2: Human body model is a 100pF capacitor discharged through a 1.5k
resistor to each pin.
Thermal Characteristics
Note 3: Mounted on the board.
Note 4: Derate 4.4mW/°C above 25°C.
Symbol
Description
Value
Units
JA
Thermal Resistance
3
225
°C/W
P
D
Maximum Power Dissipation (T
A
= 25°C)
4
440
mW
Symbol
Description
Value
Units
V
IN
IN to GND
-0.3 to 6.0
V
V
OUT
OUT to GND
-0.3 to V
IN
+ 0.3
V
V
EN/SET
EN/SET to GND
-0.3 to 6.0
V
I
MAX
Maximum Continuous Switch Current
250
mA
T
STORAGE
Storage Temperature Range
-65 to 150
°C
V
ESD
ESD Rating - HBM
2
4000
V
AAT4290/4291
I/O Expander Load Switches with Serial Control
4290.2005.01.1.0
3
Electrical Characteristics
V
IN
= 5.0V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C.
Note 1: The AAT4290 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is
assured by design, characterization, and correlation with statistical process controls.
Symbol
Description
Conditions
Min Typ Max Units
V
IN
Operation Voltage
1.8
5.5
V
I
Q
Quiescent Current
V
IN
= 5.5V, EN/SET = V
IN
, I
OUT
= 0,
4.5
8
µA
All Switches ON
I
Q(OFF)
Off Supply Current
EN/SET = 0, V
IN
= 5.5V, V
OUT
Open
1
µA
I
SD(OFF)
Off Switch Current
EN/SET = 0, V
IN
= 5.5V, V
OUTn
= 0
0.1
1
µA
V
UVLO
Under-Voltage Lockout
V
IN
Falling
1.2
V
V
UVLO(hys)
Under-Voltage Lockout Hysteresis
250
mV
V
IN
= 1.8V, T
A
= 25°C
2.5
3.8
R
DS(ON)
On-Resistance
V
IN
= 3.0V, T
A
= 25°C
1.5
2.2
V
IN
= 4.2V, T
A
= 25°C
1.2
1.8
V
IN
= 5.0V, T
A
= 25°C
1.1
1.7
T
CRDS
On-Resistance Temperature
2800
ppm°C
Coefficient
AAT4290-1 and AAT4291-1
T
D(ON)
Output Turn-On Delay
V
IN
= 5V, R
LOAD
= 500
, C
OUT
= 0.1µF
40
ns
T
R
Turn-On Rise Time
V
IN
= 5V, R
LOAD
= 500
, C
OUT
= 0.1µF
270
ns
T
D(OFF)
Turn-Off Delay Time
V
IN
= 5V, R
LOAD
= 500
40
ns
AAT4290-2 and AAT4291-2
T
D(ON)
Output Turn-On Delay
V
IN
= 5V, R
LOAD
= 500
, C
OUT
= 0.1µF
50
µs
T
R
Turn-On Rise Time
V
IN
= 5V, R
LOAD
= 500
, C
OUT
= 0.1µF
200
µs
T
D(OFF)
Turn-Off Delay Time
V
IN
= 5V, R
LOAD
= 500
40
ns
EN/SET
V
EN(L)
Enable Threshold Low
V
IN
= 1.8V
0.4
V
V
EN(H)
Enable Threshold High
V
IN
= 5.5V
1.6
V
T
LO
EN/SET Low Time
V
EN/SET
< 0.4V
100
ns
T
HI
Minimum EN/SET High Time
V
IN
2.5V
500
ns
V
IN
> 2.5V
250
T
O
EN/SET Off Timeout
2.6
4.0
µs
T
LAT
EN/SET Latch Timeout
2.6
4.0
µs
I
SINK
EN/SET Input Leakage
V
EN/SET
= 5.5V
0.01
1
µA
AAT4290/4291
I/O Expander Load Switches with Serial Control
4
4290.2005.01.1.0
AAT4290/4291
I/O Expander Load Switches with Serial Control
4290.2005.01.1.0
5
Typical Characteristics
Unless otherwise noted, V
IN
= 5V, C
IN
= 1µF, C
OUTX
= 0.1µF, T
A
= 25°C.
R
DS(ON)
vs. Temperature
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
-40
-20
0
20
40
60
80
100
Temperature (
°
C)
R
DS(ON)
(
)
V
IN
= 5.0V
I
O1-5
= 100mA
R
DS3
R
DS4
R
DS5
R
DS1
R
DS2
R
DS(ON)
vs. Temperature
Temperature (
°
C)
R
DS(ON)
(
)
-40
-20
0
20
40
60
80
100
0.7
0.8
0.9
1
1.1
1.2
1.3
V
IN
= 5.0V
I
O1-5
= 50mA
R
DS1
R
DS2
R
DS3
R
DS4
R
DS5
R
DS(ON)
vs. Input Voltage
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
R
DS(ON)
(
)
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
2.7
I
O1-5
= 100mA
R
DS1
R
DS2
R
DS5
R
DS3
R
DS4
V
IH
and V
IL
vs. Input Voltage
1.5
2.5
2
3.5
3
4.5
4
5.5
5
Input Voltage (V)
V
IH
and V
IL
(V)
V
IL
V
IH
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
Quiescent Current vs. Input Voltage
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
I
Q
(
µ
A)
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Quiescent Current vs. Temperature
-40
-20
0
20
40
60
80
100
Temperature (
°
C)
I
Q
(
µ
A)
2
2.5
3
3.5
4
4.5
5
5.5
6
V
IN
=5.0V
V
IN
=3.3V