AAT4282A
Dual Slew Rate Controlled Load Switch
General Description
The AAT4282A SmartSwitch鈩?is a member of
AnalogicTech's Application Specific Power MOS-
FET鈩?(ASPM鈩? product family. The AAT4282A is
a dual P-channel MOSFET power switch designed
for high-side load-switching applications. Each
MOSFET has a typical R
DS(ON)
of 60m惟, allowing
increased load switch current handling capacity with
a low forward voltage drop. The device is available
in three different versions with flexible turn-on and
turn-off characteristics 鈥?from very fast to slew-rate
limited. The standard 4282A (-1) version has a slew-
rate limited turn-on load switch. The AAT4282A (-2)
version features fast turn-on capability, typically less
than 500ns turn-on and 3碌s turn-off times. The
AAT4282A (-3) variation offers a shutdown load dis-
charge circuit to rapidly turn off a load circuit when
the switch is disabled. An additional feature is a
slew-rate selector pin which can switch between fast
and slow slew rate.
All the AAT4282A load switch versions are
designed to operate from 1.5V up to 6.5V, making
them ideal for both 3V and 5V systems. Input logic
levels are TTL and 2.5V to 5V CMOS compatible.
The quiescent supply current is a very low 1碌A(chǔ).
The AAT4282A is available in the Pb-free, low pro-
file 2.0x2.0mm FTDFN22-8 package and is speci-
fied over the -40 to 85擄C temperature range.
Features
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SmartSwitch
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V
IN
Range: 1.5V to 6.5V
Low R
DS(ON)
鈥?60m惟 Typical @ 5V
鈥?140m惟 Typical @ 1.5V
Slew Rate Turn-On Time Options
鈥?1ms
鈥?0.5碌s
鈥?100碌s
Fast Shutdown Load Discharge Option
Low Quiescent Current
鈥?Typically 1碌A(chǔ)
TTL/CMOS Input Logic Level
Temperature Range -40潞C to 85擄C
FTDFN22-8 Package
Applications
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Cellular Telephones
Digital Still Cameras
Hotswap Supplies
Notebook Computers
PDA Phones
PDAs
PMPs
Smartphones
Typical Application
INA
INA
OUTA
OUTA
INB
ON/OFF
INB
OUTB
OUTB
ENA
AAT4282A
C3
0.1渭F
C4
0.1渭F
C1
1渭F
C2
1渭F
ON/OFF
ENB
FAST
GND
FAST/SLOW
N/C
4282A.2007.09.1.1
1
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AAT4282AIPS-3-T1 產(chǎn)品屬性
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