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AAT4252A-3 Datasheet

  • AAT4252A-3

  • Dual Slew Rate Controlled Load Switch

  • 14頁(yè)

  • ANALOGICTECH

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AAT4252A
Dual Slew Rate Controlled Load Switch
General Description
The AAT4252A SmartSwitch鈩?is a dual P-channel
MOSFET power switch designed for high-side load-
switching applications. Each MOSFET has a typical
R
DS(ON)
of 105m惟, allowing increased load switch
current handling capacity with a low forward voltage
drop. The device is available in three different ver-
sions with flexible turn-on and turn-off characteris-
tics鈥揻rom very fast to slew-rate limited. The standard
4252A (-1) version has a slew-rate limited turn-on
load switch. The AAT4252A (-2) version features a
fast turn-on capabilities, typically less than 500ns
turn-on and 3碌s turn-off times. The AAT4252A (-3)
variation offers a shutdown load discharge circuit to
rapidly turn-off a load circuit when the switch is dis-
abled. An additional feature is a slew-rate selector pin
which can switch between fast and slow slew rate.
All the AAT4252A load switch versions are designed
to operate from 1.5V up to 6.5V, making then ideal
for both 3V and 5V systems. Input logic levels are
TTL and 2.5V to 5V CMOS compatible. The quies-
cent supply current is a very low 500nA.
The AAT4252A is available in the Pb-free TSOPJW-
12 package and is specified over the -40擄C to
+85擄C temperature range.
Features
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SmartSwitch
鈩?/div>
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鈥?/div>
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V
IN
Range: 1.5V to 6.5V
Low R
DS(ON)
鈥?87m惟 Typical @ 5V
鈥?196m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 500nA
TTL/CMOS Input Logic Level
Temperature Range: -40潞C to +85擄C
Available in TSOPJW-12 package
Applications
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Cellular Telephones
Digital Still Cameras
Notebook Computers
PDA Phones
PDAs
PMPs
Smartphones
Typical Application
INA
2
INA
OUTA
12
OUTA
INB
ON/OFF
5
INB
OUTB
7
OUTB
3
ENA
AAT4252A
C3
0.1渭F
C4
0.1渭F
C1
1渭F
C2
1渭F
ON/OFF
4
ENB
FAST
GND
8,9,10,11
6
FAST/SLOW
1
N/C
4252A.2007.06.1.0
1

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