AAT4252AITP-3-T1 View Datasheet(PDF) - Analog Technology Inc
Part Name
Description
MFG CO.
'AAT4252AITP-3-T1' PDF : 14 Pages View PDF
AAT4252A
Dual Slew Rate Controlled Load Switch
General Description
Features
SmartSwitch™
The AAT4252A SmartSwitch™ is a dual P-channel
MOSFET power switch designed for high-side load-
switching applications. Each MOSFET has a typical
RDS(ON) of 105mΩ, 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–from 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 3µs 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°C to
+85°C temperature range.
• VIN Range: 1.5V to 6.5V
• Low RDS(ON)
— 87mΩ Typical @ 5V
— 196mΩ Typical @ 1.5V
• Slew Rate Turn-On Time Options
— 1ms
— 0.5µs
— 100µs
• Fast Shutdown Load Discharge Option
• Low Quiescent Current
— Typically 500nA
• TTL/CMOS Input Logic Level
• Temperature Range: -40ºC to +85°C
• Available in TSOPJW-12 package
Applications
• Cellular Telephones
• Digital Still Cameras
• Notebook Computers
• PDA Phones
• PDAs
• PMPs
• Smartphones
Typical Application
INA
INB
C1
1μF
2 INA
OUTA 12
5 INB
OUTB 7
ON/OFF 3 ENA AAT4252A
C2
1μF
ON/OFF
4 ENB
C3
0.1μF
FAST/SLOW 1 FAST
GND
N/C 6
8,9,10,11
C4
0.1μF
OUTA
OUTB
4252A.2007.06.1.0
1
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