AAT4282A: Slew Rate Controlled Load Switch

DATA SHEET
AAT4282A: Slew Rate Controlled Load Switch
Applications
Description
 Cellular telephones
The AAT4282A SmartSwitch™ is a member of the Skyworks
Application Specific Power MOSFET (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 RDS(ON) of 60 m, 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 turnoff 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 500 ns turn-on and 3 s turn-off
times. The AAT4282A (-3) variation offers a shutdown load
discharge 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.
 Digital still cameras
 Hot-swap supplies
 Notebook computers
 PDA phones
 PDAs
 PMPs
 Smartphones
Features
 VIN range: 1.5 V to 6.5 V
 Low RDS(ON):
 60 m typical @ 5 V
 140 m typical @ 1.5 V
All the AAT4282A load switch versions are designed to operate
from 1.5 V up to 6.5 V, making them ideal for both 3 V and 5 V
systems. Input logic levels are TTL and 2.5 V to 5 V CMOS
compatible. The quiescent supply current is a very low 1 A.
 Slew rate turn-on time options:
 1 ms
 0.5 s
 100 s
The AAT4282A is available in the Pb-free, low profile, 8-pin
2.0 mm  2.0 mm FTDFN package and is specified over the
40 °C to 85 °C ambient temperature range.
 Fast shutdown load discharge option
A typical application circuit is shown in Figure 1. The pin
configurations are shown in Figure 2. Signal pin assignments and
selector guide are provided in Tables 1 and 2.
 Low quiescent current:
 Typical 1 A
 TTL/CMOS input logic level
Skyworks Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green™, document number
SQ04-0074.
 Temperature range: 40 °C to 85 °C
 FTDFN (8-pin, 2.0 mm  2.0 mm) package (MSL1, 260 ºC per
JEDEC J-STD-020)
INA
INA
OUTA
OUTA
INB
INB
OUTB
OUTB
C1
1 F
C2
1 F
ON/OFF
ENA
ON/OFF
ENB
FAST/SLOW
FAST
AAT4282A
GND
C3
0.1 F
C3
0.1 F
tc245
Figure 1. AAT4282A Typical Application Circuit
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
INA
1
8
OUTA
ENA
2
7
FAST
ENB
3
6
GND
INB
4
5
OUTB
tc246
Figure 2. AAT4282A Pinout – 8-Pin, 2.0 mm  2.0 mm FTDFN
(Top View)
Table 1. AAT4282A Signal Descriptions
Pin Number
Name
Description
1
INA
This is the pin to the P-channel MOSFET source for Switch A. Bypass to ground through a 1 F capacitor. INA is independent of INB.
2
ENA
Active-High Enable Input A. A logic low turns the switch off and the device consumes less than 1 A of current. Logic high resumes
normal operation.
3
ENB
Active-High Enable Input B. A logic low turns the switch off and the device consumes less than 1 A of current. Logic high resumes
normal operation.
4
INB
This is the pin to the P-channel MOSFET source for Switch B. Bypass to ground through a 1 F capacitor. INB is independent of INA.
5
OUTB
This is the pin to the P-channel MOSFET drain connection. Bypass to ground through a 0.1 F capacitor.
6
GND
Ground connection
7
FAST
Active-High Input. Switches between FAST (logic H) and SLOW (Logic L) slew rate.
8
OUTA
This is the pin to the P-channel MOSFET drain connection. Bypass to ground through a 0.1 F capacitor.
Table 2. AAT4282A Selector Guide
Slew Rate (Typ)
Part Number
FAST (H)
SLOW (L)
Active Pull-Down
Enable
AAT4282A-1 (Note 1)
1 ms
NO
Active High
AAT4282A-2 (Note 1)
0.5 s
NO
Active High
AAT4282A-3
100 s
YES
Active High
Note 1:
1 ms
Parts not available in stock, but can be ordered.
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
Electrical and Mechanical Specifications
Table 3, the thermal information is listed in Table 4, and electrical
specifications are provided in Table 5.
The absolute maximum ratings of the AAT4282A are provided in
Table 3. AAT4282A Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Minimum
Maximum
Units
IN to GND
VIN
0.3
+7
V
EN, FAST to GND
VEN, VFAST
0.3
+7
V
OUT to GND
VOUT
0.3
VIN + 0.3
V
Maximum continuous switch current
IMAX
3
A
Maximum pulsed current (duty cycle  10%)
IDM
5.5
A
Operating junction temperature range
TJ
150
ºC
300
ºC
4000
V
Maximum soldering temperature (at leads)
TLEAD
Electrostatic discharge:
ESD
40
Human Body Model (HBM), Class 3A (Note 2)
Note 1:
Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal value. Exceeding any of the limits listed may result in permanent damage to the device.
Note 2:
Human Body Model is a 100 pF capacitor discharged through a 1.5 k resistor into each pin.
Table 4. AAT4282A Thermal Information (Note 1)
Parameter
Symbol
Value
Units
Maximum thermal resistance
JA
70
ºC/W
Maximum power dissipation
PD
1.78
W
Note 1:
Mounted on a AAT4282A demo board in still 25 °C air.
CAUTION: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
Table 5. AAT4282A Electrical Specifications (Note 1)
(VIN = 5 V, TA = –40 C to +85C, Unless Otherwise Noted, Typical Values are TA = 25 C, Per Channel)
Parameter
Symbol
Test Condition
Min
Typical
Units
Operation voltage
VIN
6.5
V
Quiescent current
IQ
ON/OFF = Active, VFAST = VIN, IOUT = 0 A
1.0
A
Off supply current
IQ(OFF)
ON/OFF = Inactive, OUT = Open
1.0
A
Off switch current
ISD(OFF)
ON/OFF = GND, VOUT = 0 V
1.0
A
On-resistance A or B
On resistance temperature coefficient
1.5
Max

VIN = 6.5 V
56
VIN = 5 V
60
130

VIN = 4.2 V
65
140

VIN = 3.0 V
76
160

RDS(ON)
VIN = 1.80 V
110
230

VIN = 1.5 V
140
280

TCRRDS
2800
ppm/°C
ON/OFF input logic low voltage
VIL
VIN = 1.5 V
ON/OFF input logic high voltage
VIH
VIN = 5 V
0.4
ON/OFF input leakage
ISINK
VSD/OFF = 5.5 V
Output turn-on delay time
tD(ON)
VIN = 5 V, RLOAD = 10 , TA = 25 °C
Turn-on rise time
tON
VIN = 5 V, RLOAD = 10 , TA = 25 °C
Output turn-off delay time
tD(OFF)
VIN = 5 V, RLOAD = 10 , TA = 25 °C
4.0
Output turn-on delay time
tD(ON)
VIN = 5 V, RLOAD = 10 , TA = 25 °C
Turn-on rise time
tON
VIN = 5 V, RLOAD = 10 , TA = 25 °C
Output turn-off delay time
tD(OFF)
VIN = 5 V, RLOAD = 10 , TA = 25 °C
Output turn-on delay time
tD(ON)
VIN = 5 V, RLOAD = 10 , TA = 25 °C
Turn-on rise time
tON
VIN = 5 V, RLOAD = 10 , VFAST = 5 V, TA = 25 °C
Turn-on rise time
tON
VIN = 5 V, RLOAD = 10 , VFAST = 0 V, TA = 25 °C
1000
1500
s
Output turn-off delay time
tD(OFF)
VIN = 5 V, RLOAD = 10 , TA = 25 °C
4.0
10
s
Output pull-down resistance during OFF
RPD
ON/OFF = Inactive, TA = 25 °C
150
250

1.4
V
V
1.0
A
20
40
s
1000
1500
s
10
s
0.5
2
s
0.5
1.0
s
4.0
10
s
20
40
s
100
150
s
AAT4282A-1 (Note 2)
AAT4282A-2 (Note 2)
AAT4282A-3
Note 1: Performance is guaranteed only under the conditions listed in this table.
Note 2: Contact factory for other turn on and delay options.
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
Typical Performance Characteristics
(VIN = 5 V, TA = –40 C to +85 C, Unless Otherwise Noted, Typical Values are TA = 25 C, Per Channel)
12
12
Quiescent Current (μA)
10
8
VIN = 5 V
6
4
VIN = 3 V
2
6
4
2
-15
10
35
60
tc248
0
-40
8
tc247
Quiescent Current (μA)
10
0
85
0
1
2
Temperature (°C)
5
6
Figure 4. Quiescent Current vs Input Voltage
(No Load; Single Switch)
1
1.3
0.9
1.2
0.8
ON/OFF Threshold (V)
0.7
0.6
0.5
0.4
0.3
0.2
1.1
VIH
1
VIL
0.9
0.8
0.7
0
-40
tc249
0.1
-15
10
35
60
0.6
1.5
85
tc250
Off Supply Current (μA)
4
Input Voltage (V)
Figure 3. Quiescent Current vs Temperature
(No Load; Single Switch)
2
2.5
Temperature (°C)
3.5
4
4.5
5
5.5
Figure 6. Typical ON/OFF Threshold vs Input Voltage
100
220
90
200
On-Resistance (mΩ
Ω)
VIN = 3 V
70
60
50
VIN = 5 V
40
30
20
tc251
10
-15
10
35
60
Temperature (°C)
Figure 7. On-Resistance vs Temperature
85
180
160
ISW = 2 A
140
120
100
80
60
40
1.5
ISW = 100 mA
tc252
80
0
-40
3
Input Voltage (V)
Figure 5. Off Supply Current vs Temperature
(No Load; EN = GND; VIN = 5.0 V)
On-Resistance (mΩ
Ω)
3
2.5
3.5
4.5
5.5
6.5
Input Voltage (V)
Figure 8. On-Resistance vs Input Voltage
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
6
6
ENA
ENA
0
4
ENB
2
VOUT
0
Output Voltage Channel A
(top) (V)
Output Voltage Channel A
(top) (V)
2
4
VOUT
2
0
6
ENB
4
VOUT
2
Output Voltage Channel B
(bottom) (V)
VOUT
Output Voltage Channel B
(bottom) (V)
4
0
tc253
tc254
Time (50 μs/div)
Time (50 μs/div)
Figure 9. Output Turn-On Delay Time
(VINA/VENA = 5 V, VINB/VENB = 3 V, RLA = 10 , RLB = 20 )
Figure 10. Output Turn-On Delay Time
(VINA/VINB/VEN = 5 V, RL = 10 )
6
EN
5
1
2
1
0.5
IIN
0
0
Voltage (top) (V)
Voltage (top) (V)
3
4
EN
3
2
0.4
VOUT
1
0.2
IIN
0
0
tc255
tc256
Time (50 μs/div)
Time (50 μs/div)
Figure 11. Output Turn-On Delay Time
(VIN = 5 V, RL = 10 )
Figure 12. Output Turn-On Delay Time
(VIN = 3 V, RL = 20 )
3.5
7
EN
3
5
2.5
4
2
3
Voltage (V)
Voltage (V)
6
VOUT (VFAST = GND)
2
1
0
EN
1.5
1
VOUT (VFAST = GND)
0.5
VOUT (VFAST = VIN)
0
tc257
Time (500 μs/div)
Figure 13. Output Turn-On
(RL = 10 )
VOUT (VFAST = VIN)
-0.5
tc258
Time (200 μs/div)
Figure 14. Output Turn-On
(VIN = 1.8 V, RL = 10 )
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Current (bottom) (A)
VOUT
Current (bottom) (A)
4
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
1.2
5
1
Voltage (top) (V)
0.6
3
2
0.4
VOUT
1
0.2
0
0
4
3
IIN
2
0.4
VOUT
1
0.2
0
0
Current (bottom) (A)
IIN
Current (bottom) (A)
0.8
4
Voltage (top) (V)
6
EN
EN
tc260
tc259
Time (5 μs/div)
Time (5 μs/div)
Figure 15. Output Turn-Off Delay Time
(VIN = 5 V, RL = 10 )
Figure 16. Output Turn-Off Delay Time
(VIN = 3 V, RL = 20 )
Enable Voltage (top) (V)
Output Voltage (bottom) (V)
3.5
3
2.5
2
1.5
1
VOUT
0.5
0
EN
-0.5
tc261
Time (5 μs/div)
Figure 17. Output Turn-Off Delay Time
(VIN = 1.8 V, RL = 10 )
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
OUTA
INA
Turn-ON Slew
Rate Control
Level
Shift
*
ON/OFF A
FAST/SLOW
OUTB
INB
Turn-ON Slew
Rate Control
Level
Shift
*
ON/OFF B
* AAT4282A-3 version only.
tc262
GND
Figure 18. AAT4282A Functional Block Diagram
Functional Description
The AAT4282A is a family of flexible dual P-channel MOSFET
power switches designed for high-side load switching
applications. There are three versions of the AAT4282A with
different turn-on and turn-off characteristics to choose from,
depending upon the specific requirements of an application.
The first version, the AAT4282A-1, has a moderate turn-on slew
rate feature, which reduces in-rush current when the MOSFET
is turned on. This function allows the load switch to be
implemented with either a small input capacitor or no input
capacitor at all. During turn-on slewing, the current ramps
linearly until it reaches the level required for the output load
condition. The proprietary turn-on current control method works
by careful control and monitoring of the MOSFET gate voltage.
When the device is switched ON, the gate voltage is quickly
increased to the threshold level of the MOSFET. Once at this
level, the current begins to slew as the gate voltage is slowly
increased until the MOSFET becomes fully enhanced. Once it
has reached this point the gate is quickly increased to the full
input voltage and the RDS(ON) is minimized.
The second version, AAT4282A-2, is a very fast switch intended
for high-speed switching applications. This version has no turnon slew rate control and no special output discharge features.
The final switch version, AAT4282A-3, has the addition of a
minimized slew rate limited turn-on function and a shutdown
output discharge circuit to rapidly turn off a load when the load
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
switch is disabled through the ON/OFF pin. Using the FAST input
pin on the AAT4282A-3, the device can be manually switched to
a slower slew rate.
All versions of the AAT4282A operate with input voltages
ranging from 1.5 V to 6.5 V. All versions of this device have
extremely low operating current, making them ideal for batterypowered applications.
The ON/OFF control pin is TTL compatible and also functions
with 2.5 V to 5 V logic systems, making the AAT4282A an ideal
level-shifting load switch.
A functional block diagram is shown in Figure 18.
Application Information
Input Capacitor
A 1 F or larger capacitor is recommended for CIN in most
applications. A CIN capacitor is not required for basic operation;
however, it is useful in preventing load transients from affecting
upstream circuits. CIN should be located as close to the device
VIN pin as practically possible. Ceramic, tantalum, or aluminum
electrolytic capacitors may be selected for CIN. There is no
specific capacitor equivalent series resistance (ESR)
requirement for CIN. However, for higher current operation,
ceramic capacitors are recommended for CIN due to their
inherent capability over tantalum capacitors to withstand input
current surges from low-impedance sources, such as batteries
in portable devices.
Output Capacitor
For proper slew operation, a 0.1 F or greater capacitor is
required between OUT and GND. Likewise, with the output
capacitor, there is no specific capacitor ESR requirement. If
desired, COUT may be increased without limit to accommodate
any load transient condition without adversely affecting the slew
rate.
Enable Function
The AAT4282A features an enable/disable function. This pin
(EN) is active high and is compatible with TTL or CMOS logic. To
assure the load switch turns on, the EN control level must be
greater than 1.4 V. The load switch goes into shutdown mode
when the voltage on the EN pin falls below 0.4 V. When the load
switch is in shutdown mode, the OUT pin is tri-stated, and
quiescent current drops to leakage levels below 1 F.
Reverse Output-to-Input Voltage Conditions and
Protection
Under normal operating conditions, a parasitic diode exists
between the output and input of the load switch. The input
voltage should always remain greater than the output load
voltage, maintaining a reverse bias on the internal parasitic
diode. Conditions where VOUT might exceed VIN should be
avoided since this would forward bias the internal parasitic
diode and allow excessive current flow into the OUT pin,
possibly damaging the load switch. In applications where there
is a possibility of VOUT exceeding VIN for brief periods of time
during normal operation, the use of a larger value CIN capacitor
is highly recommended. A larger value of CIN with respect to
COUT will effect a slower CIN decay rate during shutdown, thus
preventing VOUT from exceeding VIN. In applications where there
is a greater danger of VOUT exceeding VIN for extended periods
of time, it is recommended to place a Schottky diode from VIN to
VOUT (connecting the cathode to VIN and anode to VOUT). The
Schottky diode forward voltage should be less than 0.45 V.
Thermal Considerations and High Output Current
Applications
The AAT4282A is designed to deliver a continuous output load
current. The limiting characteristic for maximum safe operating
output load current is package power dissipation. In order to
obtain high operating currents, careful device layout and circuit
operating conditions must be taken into account.
The following discussions assumes the load switch is mounted
on a printed circuit board utilizing the minimum recommended
footprint as stated in the Printed Circuit Board Layout
Recommendations section of this datasheet.
At any given ambient temperature (TA), the maximum package
power dissipation can be determined by the following equation:
PD(MAX) 
TJ ( MAX )  TA
 JA
Constants for the AAT4282A are maximum junction temperature
(TJ(MAX) = 125 °C, please note that the actual maximum
junction temperature of AAT4282A is 150 °C. However, good
design practice is to derate the maximum die temperature to
125 °C to prevent the possibility of over-temperature damage)
and package thermal resistance (JA = 70 °C/W). Worst case
conditions are calculated at the maximum operating
temperature, TA = 85 °C. Typical conditions are calculated
under normal ambient conditions where TA = 25 °C.
At TA = 85 °C, PD(MAX) = 571 mW.
At TA = 25 °C, PD(MAX) = 1429 mW.
The maximum continuous output current for the AAT4282A is a
function of the package power dissipation and the RDS of the
MOSFET at TJ(MAX). The maximum RDS of the MOSFET at TJ(MAX)
is calculated by increasing the maximum room temperature RDS
by the RDS temperature coefficient. The temperature coefficient
(TC) is 2800 ppm/°C. Therefore, at 125°C:
RDS(MAX) = RDS(25 °C)  (1 + TC  T) (
RDS(MAX) = 130 m + 0.002800  (125 °C  25 °C)
RDS(MAX) = 166.4 m
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
For maximum current, refer to the following equation:
I OUT(MAX) 
PD( MAX )
RDS
For example, if VIN = 5 V, RDS(MAX) = 166.4 m, and
TA = 25 °C, IOUT(MAX) = 2.93 A. If the output load current were
to exceed 2.93 A or if the ambient temperature were to increase,
the internal die temperature would increase and the device
would be damaged. Higher peak currents can be obtained with
the AAT4282A. To accomplish this, the device thermal
resistance must be reduced by increasing the heat sink area or
by operating the load switch in a duty cycle manner. Duty
cycles with peaks less than 2 ms in duration can be considered
using the method described in the High Peak Output Current
Applications section of this datasheet.
High Peak Output Current Applications
Some applications require the load switch to operate at a
continuous nominal current level with short duration, highcurrent peaks. Refer to the IDM specification in Table 3 to ensure
that the AAT4282A’s maximum pulsed current rating is not
exceeded. The duty cycle for both output current levels must be
taken into account. To do so, first calculate the power
dissipation at the nominal continuous current level, and then
add the additional power dissipation due to the short duration,
high-current peak scaled by the duty factor. For example, a 4 V
system using an AAT4282A which has channel A operates at a
continuous 1 A load current level, and channel B operates at a
continuous 100 mA load current level and has short 3 A current
peaks, as in a GSM application. The current peak occurs for
576 s out of a 4.61 ms period. First, the current duty cycle is
calculated:
 x   576 s 
%Peak Duty Cycle  


 100   4.61ms 
%Peak Duty Cycle  12.5%
The load current is 100 mA for 87.5% of the 4.61 ms period
and 3 A for 12.5% of the period. Since the Electrical
Characteristics do not report RDS(MAX) for 4 V operation, it must
be approximated by consulting the chart of RDS(ON) vs VIN. The
RDS reported for 5 V at 100 mA and 3 A can be scaled by the
ratio seen in the chart to derive the RDS for 4 V VIN at 25 °C:
130 m  63 m / 60 m  136.5 m
Derated for temperature:
136.5 m (1 + 0.002800  (125 °C  25 °C)) = 174.7 m.
For channel A, the power dissipation for a continuous 1 A load is
calculated as follows:
2
PD( CHA )  I OUT
 RDS  1 A 174.7 m  174.7 mW
2
For channel B, the power dissipation for 100 mA load is
calculated as follows:
2
PD( MAX )  I OUT
 RDS
PD( 100 mA )  100 mA 174.7 m
2
PD( 100 mA )  1.75 mW
PD( 87.5% D / C )  % DC  PD( 100 mA )
PD( 87.5% D / C )  0.875 1.75 mW
PD( 87.5% D / C )  1.53 mW
The power dissipation for 100 mA load at 87.5% duty cycle is
1.53 mW. Now the power dissipation for the remaining 12.5%
of the duty cycle at 3 A is calculated:
2
PD( MAX )  I OUT
 RDS
PD( 3 A )  3 A 174.7 m
2
PD( 3 A )  1572 mW
PD( 12.5% D / C )  % DC  PD( 3 A )
PD( 12.5% D / C )  0.125 1572 mW
PD( 12..5% D / C )  196.7 mW
Finally, the total power dissipation for channels A and B is
determined as follows:
PD( Total )  PD( CHA )  PD( 100 mA )  PD( 3 A )
PD( Total )  174.7 mW  1.53 mW  196.7 mW
PD( Total )  373 mW
The maximum power dissipation for the AAT4282A operating at
an ambient temperature of 85 °C is 373 mW. The device in this
example has a total power dissipation of 571 mW. This is well
within the thermal limits for safe operation of the device; in fact,
at 85 °C, the AAT4282A handles a 3 A pulse for up to 25% duty
cycle. At lower ambient temperatures, the duty cycle can be
further increased.
Printed Circuit Board Layout Recommendations
For proper thermal management, and to take advantage of the
low RDS(ON) of the AAT4282A:
 VIN and VOUT should be routed using wider than normal traces
 GND should be connected to a ground plane
 For best performance, CIN and COUT should be placed close to
the package pins
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
Evaluation Board Description
Package Information
The AAT4282A Evaluation Board is used to test the performance
of the AAT4282A. An Evaluation Board schematic diagram is
provided in Figure 19. Layer details for the Evaluation Board are
shown in Figure 20.
Package dimensions for the 8-pin FTDFN package are shown in
Figure 21. Tape and reel dimensions are shown in Figure 22.
INA
(1.5 V ~ 6.5 V)
U1
1
C1
1 μF
JP1
1
2
FAST/SLOW
3
4
2
7
4
ENA
8
OUTA
C3
0.1 μF
FAST
3
2
1
INB
OUTB
5
OUTB
3
2
C2
1 μF
OUTA
1
INB
(1.5 V ~ 6.5 V)
ENB
INA
2
ENA
C4
0.1 μF
1
3
ENB
GND
6
AAT4282
C1, C2: 1 μF, 0603 X5R, 10 V (P/N: GRM188R61A105KA61D)
C3, C4: 0.1 μF, 0603 X5R, 10 V (P/N: GRM188R71C104KA01D)
tc263
Figure 19. AAT4282A Evaluation Board Schematic
(a) Top Side
(b) Bottom Side
tc264
Figure 20. AAT4282A Evaluation Board Layer Details
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DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
0.400 ± 0.050
Detail "A"
2.000 ± 0.050
Index Area
Bottom View
2.000 ± 0.050
0.230 ± 0.050
0.750 ± 0.050
0.000
+ 0.100
– 0.000
Pin 1 Identification
0.450 ± 0.050
0.500 ± 0.050
Top View
0.250 ± 0.050
Side View
Detail "A"
tc265
Figure 21. AAT4282A 8-pin FTDFN Package Dimensions
4.00 ± 0.10
2.00 ± 0.05
1.75 ± 0.10
3.50 ± 0.05
2.30 ± 0.05
2.30 ± 0.05
4.00 ± 0.10
Pin 1 Location
0.300 ± 0.05
tc266
All dimensions are in millimeters.
Figure 22. AAT4282A Tape and Reel Dimensions
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1.00 ± 0.05
8.10 ± 0.20
1.50 ± 0.10
May 22, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 202231C
DATA SHEET • AAT4282A: SLEW RATE CONTROLLED LOAD SWITCH
Ordering Information
Model Name
AAT4282A slew rate controlled load switch
Part Marking (Note 1)
WKXYY
Manufacturing Part Number (Note 2)
AAT4282AIPS-3-T1
Evaluation Board Part Number
AAT4282AIPS-3-EVB
Note 1: XYY = assembly and date code.
Note 2: Sample stock is generally held on part numbers listed in BOLD.
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