AAT4282A Datasheet, PDF (1/14 Pages) Advanced Analogic Technologies – Dual Slew Rate Controlled Load Switch

AAT4282A
Dual Slew Rate Controlled Load Switch
General Description
Features
SmartSwitch^™
The AAT4282A SmartSwitch™ is a member of
AnalogicTech's Application Specific Power MOS-
FET™ (ASPM™) 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 60mΩ, 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 – 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 3µs 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 1µA.
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°C temperature range.
• V_IN Range: 1.5V to 6.5V
• Low R_DS(ON)
— 60mΩ Typical @ 5V
— 140mΩ Typical @ 1.5V
• Slew Rate Turn-On Time Options
— 1ms
— 0.5µs
— 100µs
• Fast Shutdown Load Discharge Option
• Low Quiescent Current
— Typically 1µA
• TTL/CMOS Input Logic Level
• Temperature Range -40ºC to 85°C
• FTDFN22-8 Package
Applications
• Cellular Telephones
• Digital Still Cameras
• Hotswap Supplies
• Notebook Computers
• PDA Phones
• PDAs
• PMPs
• Smartphones
Typical Application
INA
INB
C1
1μF
INA
OUTA
ON/OFF
INB
OUTB
ENA AAT4282A
C2
1μF
ON/OFF
ENB
FAST/ SLOW
FAST
GND
N/C
OUTA
OUTB
C3
0.1μF
C4
0.1μF
4282A.2007.09.1.1
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