AAT4252AITP-3-T1 AnalogicTech, AAT4252AITP-3-T1 Datasheet

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AAT4252AITP-3-T1

Manufacturer Part Number
AAT4252AITP-3-T1
Description
Dual Slew Rate Controlled Load Switch
Manufacturer
AnalogicTech
Datasheet
1.AAT4252AITP-3-T1.pdf (12 pages)
General Description
The AAT4252A SmartSwitch™ is a dual P-channel MOSFET
power switch designed for high-side load-switching appli-
cations. Each MOSFET has a typical R
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 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 disabled. An addi-
tional 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 quiescent 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 tem-
perature range.
Typical Application
SmartSwitch
4252A.2009.06.1.1
INA
INB
TM
1μF
C1
1μF
C2
FAST/SLOW
ON/OFF
ON/OFF
DS(ON)
of 105mΩ,
2
5
3
4
1
w w w . a n a l o g i c t e c h . c o m
INA
INB
ENA
ENB
FAST
AAT4252A
8,9,10,11
GND
Features
• V
• Low R
• Slew Rate Turn-On Time Options
• Fast Shutdown Load Discharge Option
• Low Quiescent Current
• TTL/CMOS Input Logic Level
• Temperature Range: -40°C to +85°C
• Available in TSOPJW-12 Package
Applications
• Cellular Telephones
• Digital Still Cameras
• Notebook Computers
• PDA Phones
• PDAs
• PMPs
• Smartphones
▪
▪
▪
▪
▪
▪
Dual Slew Rate Controlled Load Switch
IN
Typically 500nA
OUTA
OUTB
87mΩ Typical @ 5V
196mΩ Typical @ 1.5V
1ms
0.5μs
100μs
N/C
Range: 1.5V to 6.5V
DS(ON)
12
7
6
0.1μF
C3
PRODUCT DATASHEET
AAT4252A
0.1μF
C4
OUTA
OUTB
1

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AAT4252AITP-3-T1 Summary of contents

Page 1

TM SmartSwitch General Description The AAT4252A SmartSwitch™ dual P-channel MOSFET power switch designed for high-side load-switching appli- cations. Each MOSFET has a typical R allowing increased load switch current handling capacity with a low forward voltage drop. The ...

Page 2

TM SmartSwitch Pin Descriptions Pin # Symbol Function 1 FAST Active-high input switches between FAST (Logic H) and SLOW (Logic L) slew rate. This is the pin to the P-channel MOSFET source for Switch A. Bypass to ground through a ...

Page 3

TM SmartSwitch Selector Guide Slew Rate (Typ) Part Number FAST (H) SLOW (L) AAT4252A-1 1ms 1 AAT4252A-2 0.5μs 1 AAT4252A-3 100μs Absolute Maximum Ratings Symbol Description GND FAST EN, FAST to GND EN V ...

Page 4

TM SmartSwitch Electrical Characteristics -40°C to +85°C unless otherwise noted. Typical values are Symbol Description AAT4252A All Versions V Operation Voltage IN I Quiescent Current Q I Off Supply Current Q(OFF) ...

Page 5

TM SmartSwitch Typical Characteristics 25°C unless otherwise noted Quiescent Current vs. Input Voltage (No Load; Single Switch) 0.7 0.6 0.5 0.4 0.3 0.2 0 Input Voltage (V) ...

Page 6

TM SmartSwitch Typical Characteristics 25°C unless otherwise noted Output Turn-On = 10Ω Ω 5V 3V; R INA ENA INB ENB ...

Page 7

TM SmartSwitch Typical Characteristics 25°C unless otherwise noted Output Turn-Off = 20Ω Ω 3V 3.5 3 2.5 2 1.5 1 0.5 0 Time (5µs/div) 4252A.2009.06.1.1 Dual Slew ...

Page 8

TM SmartSwitch Functional Block Diagram INA ENA FAST INB ENB *AAT4252A-3 version only 8 Dual Slew Rate Controlled Load Switch Turn-On Slew Rate Control Level Shift * Turn-On Slew Rate Control Level Shift * GND ...

Page 9

TM SmartSwitch Functional Description The AAT4252A is a family of flexible dual P-channel MOSFET power switches designed for high-side load switching applications. There are three versions of the AAT4252A with different turn-on and turn-off character- istics to choose from, depending ...

Page 10

TM SmartSwitch highly recommended. A larger value will effect a slower C decay rate during shut- OUT IN down, thus preventing V from exceeding V OUT cations where there is a greater danger ...

Page 11

TM SmartSwitch The load current is 100mA for 87.5% of the 4.61ms period and 2A for 12.5% of the period. Since the Electrical Characteristics do not report R operation, it must be approximated by consulting the chart of R vs. ...

Page 12

... Dual Slew Rate Controlled Load Switch Marking 1 WSXYY TSOPJW-12 0.20 + 0.10 - 0.05 7° NOM 4° ± 4° 0.055 ± 0.045 0.010 PRODUCT DATASHEET AAT4252A Part Number (Tape and Reel) 2 AAT4252AITP-3-T1 0.04 REF 0.45 ± 0.15 2.75 ± 0.25 4252A.2009.06.1.1 ...

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