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AAT4280A
Datasheet
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Advanced Analogic AAT4280A Datasheet

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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
General Description
Features
characteristics. The AAT4280A (-2) version fea-
DS(ON)
tures fast load switch turn-on capabilities, typically less than 500ns turn-on and 3μs turn-off times. The AAT4280A (-3) variation offers a shutdown load discharge circuit to rapidly turn off a load circuit when the switch is disabled. The AAT4280A (-4) version features the slowest load switch turn-on capability, typically greater than 4.0ms turn-on time. All AAT4280A load switch versions operate with an input voltage ranging from 1.5V to 5.5V, 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 very low, typically 25nA.
The AAT4280A is available in a Pb-free, 8-pin SC70JW package or a Pb-free, 6-pin SOT23 package and is spec­ified over the -40°C to +85°C temperature range.
of 80mΩ, allowing
DS(ON)
• 1.5V to 5.5V Input Voltage Range
• Very Low R
• Slew Rate Limited Turn-On Time Options
4.5ms
▪
1ms
▪
0.5μs
▪
100μs
▪
• Fast Shutdown Load Discharge Option
• Low Quiescent Current 25nA (typ)
▪
• TTL/CMOS Input Logic Level
• Temperature Range: -40ºC to +85°C
• 3kV ESD Rating
• SC70JW-8 and SOT23-6 Packages
, Typically 80mΩ (5V)
DS(ON)
Applications
• Cellular Telephones
• Digital Still Cameras
• Hot Swap Supplies
• LCD Panels
• Notebook Computers
• Personal Communication Devices
• Personal Digital Assistants (PDAs)
Typical Application
V
GND
IN
AAT4280A
IN
C
1µF
IN
ON
ON/OFF
GND
GND
OUTIN
C
OUT
0.1µF
V
OUT
GND
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Pin Descriptions
Pin #
1, 5, 6, 7, 8 IN This pin is the input to the P-channel MOSFET source. Bypass to ground through a 1.0μF capacitor.
2 OUT This pin is the P-channel MOSFET drain connection. Bypass to ground through a 0.1μF capacitor. 3 4 GND Ground connection.
Symbol Function
ON/OFF Enable input.
Pin Configuration
SC70JW-8 SOT23-6 (Top View) (Top View)
1
IN
2
OUT
ON/OFF
3
45
GND
8
IN
7
IN
6
IN
OUT
GND
1
2
6
5
IN
GND
IN
ON/OFF
3
4
IN
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Selector Guide
Part Number Slew Rate (typ) Active Pull Down Enable
AAT4280A-1 1ms Active High AAT4280A-2 0.5μs Active High AAT4280A-3 100μs AAT4280A-4 4.5ms
✓
✓
Absolute Maximum Ratings1
TA = 25°C, unless otherwise noted.
Symbol Description Value Units
V
IN
V
ON
V
OUT
I
MAX
I
DM
T
J
T
S
T
LEAD
V
ESD
IN to GND -0.3 to 6 V ON/OFF to GND -0.3 to 6 V OUT to GND -0.3 to VIN + 0.3 V Maximum Continuous Switch Current 2.3 A
Maximum Pulsed Current
Operating Junction Temperature Range -40 to 150 °C Storage Temperature Range -65 to 150 °C Maximum Soldering Temperature (at leads) 300 °C ESD Rating2 - HBM 3000 V
IN ≥ 2.5V 6 A IN < 2.5V 3 A
Active High Active High
Thermal Characteristics
Symbol Description Value Units
Θ
JA
P
D
Thermal Resistance 140 °C/W Power Dissipation 714 mW
3
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.
3. Mounted on an AAT4280A demo board in still 25°C air.
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Electrical Characteristics
Unless otherwise noted, VIN = 5V, TA = -40°C to +85°C; typical values are TA = 25°C.
Symbol Description Conditions Min Typ Max Units
AAT4280A All Versions
V
IN
I
Q
I
(off) Off Supply Current ON/OFF = Inactive, OUT = Open 1 μA
Q
I
(off) Off Switch Current
SD
R
DS(on)
TC
RDS
V
IL
V
IH
I
SINK
AAT4280A-1
T
D(ON)
T
ON
T
D(OFF)
AAT4280A-2
T
D(ON)
T
ON
T
D(OFF)
AAT4280A-3
T
D(ON)
T
ON
T
D(OFF)
R
PD
AAT4280A-4
T
D(ON)
T
ON
T
D(OFF)
R
PD
Operation Voltage 1.5 5.5 V Quiescent Current ON/OFF = Active 1 μA
On Resistance
ON/OFF = Inactive, V
= 5V, TA = 25°C 80 120
IN
= 4.2V, TA = 25°C 85 130
V
IN
= 3V, TA = 25°C 100 150
V
IN
= 1.8V, TA = 25°C 160 250
IN
V
= 1.5V, TA = 25°C 200 300
IN
= 0 1
OUT
On Resistance Temperature Coeffi cient 2800 ppm/°C
V
= 1.8V to 5.5V
ON/OFF Input Logic Low Voltage
ON/OFF Input Logic High Voltage
ON/OFF Input Leakage V
IN
= 2.7V to 4.2V 2
V
IN
V
= 4.2V to 5.5V 2.4
IN
= 1.5V to 2.7V 1.4
V
IN
= 5.5V 1 μA
ON/OFF
Output Turn-On Delay VIN = 5V, R Output Turn-On Rise Time VIN = 5V, R Output Turn-Off Delay Time VIN = 5V, R
Output Turn-On Delay VIN = 5V, R Output Turn-On Rise Time VIN = 5V, R Output Turn-Off Delay Time VIN = 5V, R
Output Turn-On Delay VIN = 5V, R Output Turn-On Rise Time VIN = 5V, R Output Turn-Off Delay Time VIN = 5V, R
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
1
0.4
= 10Ω, TA = 25°C 20 40 μs = 10Ω, TA = 25°C 1000 1500 μs = 10Ω, TA = 25°C 4 10 μs
= 10Ω, TA = 25°C 0.5 2 μs = 10Ω, TA = 25°C 0.5 1 μs = 10Ω, TA = 25°C 4 10 μs
= 10Ω, TA = 25°C 20 40 μs = 10Ω, TA = 25°C 100 150 μs = 10Ω, TA = 25°C 4 10 μs
Output Pull-Down Resistance During OFF ON/OFF = Inactive, TA = 25°C 150 250
Output Turn-On Delay Time VIN = 3.3V, R Output Turn-On Rise Time VIN = 3.3V, R Output Turn-OFF Delay Time VIN = 3.3V, R
= 10Ω, TA = 25°C 20 40 μs
LOAD
= 10Ω, TA = 25°C 2000 4500 μs
LOAD
= 10Ω, TA =25°C 4 10 μs
LOAD
Output Pull-Down Resistance During OFF ON/OFF = Inactive, TA = 25°C 150 250
μAV
mΩV
V
V
Ω
Ω
1. For VIN outside this range, consult typical ON/OFF threshold curve.
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Typical Characteristics
Ω
Ω
μ
Unless otherwise noted, VIN = 5V, TA = 25°C.
Quiescent Current vs. Temperature
50
40
30
20
10
Quiescent Current (nA)
0
-40 -20 0 20 40 60 80 100
Temperature (°°C)
R
vs. Temperature
DS(ON)
120
110
100
)
90
(m
80
70
DS(ON)
R
60
50
40
-40 -20 0 20 40 60 80 100
VIN = 3V
VIN = 5V
Temperature (°C)
R
vs. Input Voltage
DS(ON)
270
250
230
2A
210
)
190
170
(mΩ
150
130
DS(ON)
R
110
90
70
1.5 1.8 2.0 2.3 2.5 2.8 3.8 4.83.0 3.3 4.3 5.33.5 4.0 4.5 5.0 5.5
1A
500mA
100mA
Input Voltage (V)
ON/OFF Threshold vs. Input Voltage
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
ON/OFF Threshold (V)
0.4
1.4 1.9 2.4 2.9 3.4 3.9 4.4 4 5.4
V
IH
Input Voltage (V)
V
IL
Off-Switch Current vs. Temperature
1.000
A)
0.100
0.010
Off-Switch Current (
0.001
-40 -20 0 20 40 60 80 100
Temperature (°C)
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Typical Characteristics—AAT4280A-1
μ
μ
μ
μ
Unless otherwise noted, VIN = 5V, TA = 25°C.
AAT4280A-1 Turn-On
(VIN = 3V; RL = 6Ω)
ON/OFF (5V/div)
Time (500
AAT4280A-1 Turn-Off
(VIN = 3V; RL = 6Ω)
V
(2V/div)
OUT
IIN (200mA/div)
s/div)
ON/OFF (5V/div)
V
OUT
(2V/div)
AAT4280A-1 Turn-On
(VIN = 5V; RL = 10Ω)
ON/OFF (5V/div)
V
(2V/div)
OUT
IIN (200mA/div)
Time (500
s/div)
AAT4280A-1 Turn-Off
(VIN = 5V; RL = 10Ω)
ON/OFF (5V/div)
V
(2V/div)
OUT
IIN (200mA/div)
s/div)
Time (10
s/div)
IIN (200mA/div)
Time (10
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Typical Characteristics—AAT4280A-2
μ
μ
μ
Unless otherwise noted, VIN = 5V, TA = 25°C.
AAT4280A-2 Turn-On
(VIN = 3V; RIN = 6Ω)
ON/OFF (5V/div)
V
IIN (200mA/div)
Time (5
s/div)
AAT4280A-2 Turn-Off
(VIN = 3V; RL = 6Ω)
ON/OFF (5V/div)
V
(2V/div)
OUT
(2V/div)
OUT
AAT4280A-2 Turn-On
(VIN = 5V; RL = 10Ω)
ON/OFF (5V/div)
V
(2V/div)
OUT
IIN (200mA/div)
Time (5
s/div)
AAT4280A-2 Turn-Off
(VIN = 5V; RL = 10Ω)
ON/OFF (5V/div)
V
(2V/div)
OUT
IIN (200mA/div)
Time (5μs/div)
IIN (200mA/div)
Time (5
s/div)
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Typical Characteristics—AAT4280A-3
μ
μ
μ
μ
Unless otherwise noted, VIN = 5V, TA = 25°C.
AAT4280A-3 Turn-On
(VIN = 3V; RL = 6Ω)
ON/OFF (5V/div)
V
IIN (200mA/div)
Time (50
s/div)
AAT4280A-3 Turn-Off
(VIN = 3V; RL = 6Ω)
ON/OFF (5V/div)
V
(2V/div)
OUT
OUT
(2V/div)
AAT4280A-3 Turn-On
(VIN = 5V; RL = 10Ω)
ON/OFF (5V/div)
V
(2V/div)
OUT
IIN (200mA/div)
Time (50
s/div)
AAT4280A-3 Turn-Off
(VIN = 5V; RL = 10Ω)
ON/OFF (5V/div)
V
(2V/div)
OUT
IIN (200mA/div)
Time (5
IIN (200mA/div)
s/div)
Time (5
s/div)
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Typical Characteristics—AAT4280A-4
Unless otherwise noted, VIN = 5V, TA = 25°C.
AAT4280A-4 Turn-On
(VIN = 3V; RL = 10ΩΩ)
EN (2V/div)
V
OUT
IIN (200mA/div)
Time (2ms/div)
AAT4280A-4 Turn-Off
(VIN = 3.3V; RL = 10WW)
(2V/div)
EN (2V/div)
V
(2V/div)
OUT
AAT4280A-4 Turn-On
(VIN = 5V; RL = 10ΩΩ)
EN (5V/div)
V
(5V/div)
OUT
IIN (500mA/div)
Time (2ms/div)
AAT4280A-4 Turn-Off
(VIN = 5V; RL = 10ΩΩ)
EN (5V/div)
V
(5V/div)
OUT
IIN (500mA/div)
Time (10µs/div)
IIN (200mA/div)
Time (10µs/div)
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Functional Block Diagram
T
IN
ON/OFF
Level
Shift
OU
Turn-On
Slew Rate
Control
*
GND
*AAT4280A-3 and -4 only
Functional Description
The AAT4280A is a family of flexible P-channel MOSFET power switches designed for high-side load switching applications. There are three versions of the AAT4280A with different turn-on and turn-off characteristics to choose from, depending upon the specific requirements of an application. The first version, the AAT4280A-1, has a moderate turn-on slew rate feature, which reduces inrush 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 R
is minimized.
DS(ON)
The second version, the AAT4280A-2, is a very fast switch intended for high-speed switching applications. This version has no turn-on slew rate control and no special output discharge features.
The third switch version, the AAT4280A-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 switch is disabled through the ON/OFF pin.
The final switch version, the AAT4280A-4, features a very slow turn-on slew rate with a typical value of 4.5ms for LCD panel applications.
All versions of the AAT4280A operate with input voltages ranging from 1.5V to 5.5V. All versions of this device have extremely low operating current, making them ideal for battery-powered applications. The ON/OFF con­trol pin is TTL compatible and will also function with 2.5V to 5V logic systems, making the AAT4280A an ideal level-shifting load switch.
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Applications Information
Input Capacitor
A 1μF or larger capacitor is typically recommended for C
in most applications. A CIN capacitor is not required
IN
for basic operation; however, C load transients from affecting upstream circuits. C should be located as close to the device V cally possible. Ceramic, tantalum, or aluminum electro­lytic capacitors may be selected for C specific capacitor ESR requirement for C higher current operation, ceramic capacitors are recom­mended for C
due to their inherent capability over tan-
IN
talum capacitors to withstand input current surges from low impedance sources, such as batteries in portable devices.
Output Capacitor
For proper slew operation, a 0.1μF capacitor or greater between V capacitor has no specific capacitor type or ESR require­ment. If desired, C accommodate any load transient condition without adversely affecting the device turn-on slew rate time.
and GND is recommended. The output
OUT
may be increased without limit to
OUT
is useful in preventing
IN
pin as practi-
IN
. There is no
IN
; however, for
IN
IN
VIN for extended periods of time, it is recommended to place a Schottky diode from V cathode to V
and anode to V
IN
to V
IN
OUT
(connecting the
OUT
). The Schottky diode
forward voltage should be less than 0.45V.
Thermal Considerations and High Output Current Applications
The AAT4280A 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 need to be taken into account.
The following discussions will assume the load switch is mounted on a printed circuit board utilizing the minimum recommended footprint, as stated in the Layout Considerations section of this datasheet.
At any given ambient temperature (T package power dissipation can be determined by the fol­lowing equation:
[T
- TA]
P
D(MAX)
J(MAX)
=
θ
JA
), the maximum
A
Enable Function
The AAT4280A features an enable / disable function. This pin (ON/OFF) is compatible with both TTL or CMOS logic.
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 V be avoided since this would forward bias the internal para­sitic diode and allow excessive current flow into the V pin and possibly damage the load switch.
In applications where there is a possibility of V exceeding V
for brief periods of time during normal
IN
operation, the use of a larger value C highly recommended. A larger value of C to C down, thus preventing V
will effect a slower CIN decay rate during shut-
OUT
OUT
cations where there is a greater danger of V
might exceed VIN should
OUT
OUT
OUT
capacitor is
IN
with respect
IN
from exceeding VIN. In appli-
exceeding
OUT
Constants for the AAT4280A are maximum junction tem­perature, T tance, Θ
JA
lated at the maximum operating temperature where T
= 125°C, and package thermal resis-
J(MAX)
= 120°C/W. Worst case conditions are calcu-
=
A
85°C. Typical conditions are calculated under normal ambient conditions where T P
= 333mW. At TA = 25°C, P
D(MAX)
= 25°C. At TA = 85°C,
A
= 833mW.
D(MAX)
The maximum continuous output current for the AAT4280A is a function of the package power dissipation and the R of the MOSFET at T at T temperature R
is calculated by increasing the maximum room
J(MAX)
DS
temperature coefficient (T
. The maximum RDS of the MOSFET
J(MAX)
by the RDS temperature coefficient. The
) is 2800ppm/°C. Therefore,
C
DS
MAX RDS125°C = RDS25°C · (1 + TC · ΔT)
MAX RDS125°C = 120mΩ · (1 + 0.0028 · (125°C - 25°C)) = 154mΩ
For maximum current, refer to the following equation:
P
I
OUT(MAX)
D(MAX)
<
R
DS
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
For example, if VIN = 5V, R 25°C, I
= 2.3A. If the output load current were to
OUT(MAX)
= 154mΩ and TA =
DS(MAX)
exceed 2.3A 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 AAT4280A. 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.
High Peak Output Current Applications
Some applications require the load switch to operate at a continuous nominal current level with short duration, high-current peaks. 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 in the additional power dissipation due to the short duration, high-current peak scaled by the duty factor.
For example, a 4V system using an AAT4280A operates at a continuous 100mA load current level and has short 2A current peaks, as in a GSM application. The current peak occurs for 576μs out of a 4.61ms period.
First, the current duty cycle is calculated:
The power dissipation for 100mA load at 87.5% duty cycle is 1.45mW. Now the power dissipation for the remaining 12.5% of the duty cycle at 2A is calculated:
P
D(MAX)
P
= (2A)2 · 166mΩ
D(2A)
P
= 664mW
D(2A)
P
D(12.5%D/C)
P
D(12.5%D/C)
P
D(12.5%D/C)
2
= I
OUT
· R
DS
= %DC · P = 0.125 · 664mΩ = 83mW
D(2A)
The power dissipation for 2A load at 12.5% duty cycle is 83mW. Finally, the two power figures are summed to determine the total true power dissipation under the varied load:
P
= P
D(total)
P
= 1.45mW + 83mW
D(total)
P
= 84.5mW
D(total)
D(100mA)
+ P
D(2A)
The maximum power dissipation for the AAT4280A oper­ating at an ambient temperature of 85°C is 333mW. The device in this example will have a total power dissipation of 84.5mW. This is well within the thermal limits for safe operation of the device; in fact, at 85°C, the AAT4280A will handle a 2A pulse for up to 50% duty cycle. At lower ambient temperatures, the duty cycle can be further increased.
% Peak Duty Cycle: X/100 = 576μs/4.61ms % Peak Duty Cycle = 12.5%
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
DS(MAX)
for 4V operation, it must be calculated approximately by con­sulting the chart of R
vs. VIN. The RDS reported for
DS(ON)
5V can be scaled by the ratio seen in the chart to derive the R
for a 4V VIN: 120mΩ · 87mΩ /80mΩ = 130mΩ.
DS
De-rated for temperature: 130mΩ · (1 + 0.0028 · (125°C
- 25°C)) = 166mΩ. The power dissipation for a 100mA load is calculated as follows:
P
D(MAX)
P
D(100mA)
P
D(100mA)
P
D(87.5%D/C)
P
D(87.5%D/C)
P
D(87.5%D/C)
2
= I
OUT
· R
DS
= (100mA)2 · 166mW = 1.66mW
= %DC · P
D(100mA)
= 0.875 · 1.66mW = 1.45mW
Printed Circuit Board Layout Recommendations
For proper thermal management and to take advantage of the low R layout rules should be followed: V
of the AAT4280A, a few circuit board
DS(ON)
and V
IN
should be
OUT
routed using wider than normal traces, and GND should be connected to a ground plane. To maximize package thermal dispation and power handling capacity of the AAT4280A SC70JW-8 package, the ground plane area connected to the ground pins should be made as large as possible. For best performance, C
and C
IN
should
OUT
be placed close to the package pins.
Evaluation Board Layout
The AAT4280A evaluation layout follows the printed cir­cuit board layout recommendations and can be used for good applications layout. Refer to Figures 1 through 3.
Note: Board layout shown is not to scale.
12 4280A.2008.04.1.5
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Figure 1: AAT4280A SC70JW-8 Package Figure 2: AAT4280A SC70JW-8 Package Evaluation Board Component Side Layout. Evaluation Board Solder Side Layout.
V
OUT
1
V
IN
C1
1μF
EN
Figure 3: AAT4280A SC70JW-8 Package Evaluation Board Schematic.
IN
2
OUT
AAT4280A
3
ON/OFF
GND
8
IN
7
IN
C2
6
IN
54
IN
0.1 μF
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4280A.2008.04.1.5 13
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
T
Figure 4: AAT4280A SOT23-6 Package Figure 5: AAT4280A SOT23-6 Package Evaluation Board Component Side Layout. Evaluation Board Solder Side Layout.
4
V
IN
IN
ON/OFF
3
AAT4280A
C1
1μF
Figure 6: AAT4280A SOT23-6 Package Evaluation Board Schematic.
5
GND
IN
GND
OUT
2
16
EN
C2
0.1μF
V
OU
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AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
Ordering Information
±
°
°
±
±
±
±
Device Option Package Marking
AAT4280A-1 SC70JW-8 NDXYY AAT4280AIJS-1-T1 AAT4280A-2 SC70JW-8 NEXYY AAT4280AIJS-2-T1 AAT4280A-3 SC70JW-8 NFXYY AAT4280AIJS-3-T1 AAT4280A-4 SC70JW-8 3EXYY AAT4280AIJS-4-T1 AAT4280A-4 SOT23-6 3LXYY AAT4280AIGU-4-T1
All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means semiconductor products that are in compliance with current RoHS standards, including the requirement that lead not exceed
0.1% by weight in homogeneous materials. For more information, please visit our website at http://www.analogictech.com/about/quality.aspx.
Package Information
0.50 BSC 0.50 BSC 0.50 BSC
SC70JW-8
0.10
0.20
1.75
2.20
1
Part Number (Tape and Reel)
2
0.225 ± 0.075
2.00 ± 0.20
0.05
0.15
1.10 MAX
0.85
7° ± 3
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held for part numbers listed in BOLD.
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4280A.2008.04.1.5 15
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0.100
0.15
0.45 ± 0.10 4° ± 4
2.10 ± 0.30
0.048REF
0.05
0.05
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
AAT4280A
Slew Rate Controlled Load SwitchSmartSwitch
TM
PRODUCT DATASHEET
2.85 ± 0.15
±
±
±
±
±
°
±
°
°
1.90 BSC
0.95 BSC
SOT23-6
All dimensions in millimeters.
0.125
1.575
0.075
0.075
10° ± 5
0.40 ± 0.10 × 6
0.20
1.10
0.20
2.80
0.25
1.20
4
4
0.60 REF
0.15 ± 0.07
0.45 ± 0.15 0.10 BSC
GAUGE PLANE
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3230 Scott Boulevard, Santa Clara, CA 95054 Phone (408) 737-4600 Fax (408) 737-4611
© Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifi cations or to discontinue any product or service without notice. Except as provided in AnalogicTech’s terms and conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied warranty relating to the sale and/or use of AnalogicTech products including liability or warranties relating to fi tness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specifi c testing of all parameters of each device is not necessarily performed. AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders.
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