AAT AAT4625 Usb single-channel power switch Datasheet

AAT4625
USB Single-Channel Power Switch
General Description
Features
The AAT4625 SmartSwitch is part of AnalogicTech's
Application Specific Power MOSFET™ (ASPM™)
product family. It is a 1.0A current limited P-channel MOSFET power switch designed for high-side
load-switching applications. This switch operates
with inputs ranging from 2.7V to 5.5V, making it
ideal for both 3V and 5V systems. An integrated
current-limiting circuit protects the input supply
against large changes in load current which may
cause the supply to fall out of regulation. The
AAT4625 is also protected from thermal overload
which limits power dissipation and junction temperatures. The current limit threshold is factory programmed at 1.5A, with a maximum of 2.0A. The
quiescent supply current is typically a low 16µA. In
shutdown mode, the supply current decreases to
less than 1µA.
•
•
•
•
•
•
•
•
•
•
•
•
•
The AAT4625 is available in Pb-free, 8-pin SOP,
TSSOP, or MSOP packages, and is specified over
the -40°C to +85°C temperature range.
SmartSwitch™
Compliant with USB 1.1 and 2.0 Specifications
2.7V to 5.5V Input Voltage Range
1.0A Minimum Continuous Current
2.0A Maximum Current Limit
60mΩ Typical RDS(ON)
Low Quiescent Current:
— Typically 16µA
— 1µA Maximum with Switch Off
Thermal Shutdown
Slew Rate Limited Turn On
Fault Flag with 10ms Blanking
Under-Voltage Lockout (UVLO)
Temperature Range: -40°C to +85°C
UL Approved—File No. E217765
8-Pin SOP, TSSOP, or MSOP Package
Applications
•
•
•
•
The AAT4600 series is a family of adjustable and
fixed SmartSwitch products with a range of current
handling capabilities. Single versions with
adjustable current limit (AAT4601) or fixed current
limit (AAT4625) as well as dual versions with fixed
current limit (AAT4626) are available.
General Purpose Power Switching
Hot Swap Supplies
Notebook Computers
USB Ports and Peripherals
UL Recognized Component
Typical Application
VCC 5.0V
7
IN
AAT4625
100k
2
0.1μF
EN (EN)
OUT
1
OUT
FLG
EN (EN)
6
OUTPUT
8
120μF
3
GND
4625.2006.04.1.2
GND
1
AAT4625
USB Single-Channel Power Switch
Pin Descriptions
Pin #
Symbol
Function
1
EN (EN)
Enable input: logic-compatible enable input. High input > 2.1V typical. Low
input < 1.9V typical. Active high or active low option available; see
Ordering Information for details.
2
FLG
Fault flag output: active-low, open-drain output. Indicates over-current,
UVLO, and thermal shutdown.
3
GND
Ground.
4,5
NC
6,8
OUT
Switch output: These pins are the P-channel MOSFET drain connection.
7
IN
Supply input: This pin is the P-channel MOSFET source connection. Also
supplies the IC's internal circuitry.
Not internally connected.
Pin Configuration
SOP-8
TSSOP-8
MSOP-8
(Top View)
2
8
7
2
2
1
1
EN (EN)
FLG
GND
NC
3
6
4
5
OUT
IN
OUT
NC
4625.2006.04.1.2
AAT4625
USB Single-Channel Power Switch
Absolute Maximum Ratings1
TA = 25°C, unless otherwise noted.
Symbol
VIN
VFLG
IFLG
VOUT
IOUT
VEN
TS
TLEAD
Description
IN to GND
FLG to GND
FLG Current
OUT to GND
Output Current (Internally Limited)
EN to GND
Storage Temperature
Maximum Soldering Temperature (at Leads)
Value
Units
-0.3 to 6
-0.3 to 6
50
-0.3 to VIN + 0.3
2.0
-0.3 to 6
150
300
V
V
mA
V
A
V
°C
°C
Thermal Information2
Symbol
Description
ΘJA
Maximum Thermal Resistance
PD
Maximum Power Dissipation
Value
SOP-8
TSSOP-8
MSOP-8
SOP-8
TSSOP-8
MSOP-8
120
150
150
1.0
833
833
Units
°C/W
W
mW
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. Mounted on an FR4 printed circuit board.
4625.2006.04.1.2
3
AAT4625
USB Single-Channel Power Switch
Electrical Characteristics
VIN = 5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C; bold values designate
full temperature range.
Symbol
VIN
IQ
IQ(OFF)
VEN-THRSH
IEN
CEN
RDS(ON)
TON
TON-RISE
TOFF
TOFF-FALL
ISD(OFF)
ILIMIT
4
Description
Operation Voltage
Quiescent Current
Off Supply Current
Enable Input Threshold
Enable Input Current
Enable Input Capacitance
On-Resistance
Output Turn-On Delay
Output Turn-On Rise Time
Output Turn-Off Delay
Output Turn-Off Fall Time
Output Leakage Current
Current Limit Threshold
OTMP
Over-Temperature Shutdown
RFLG
ISINK
VUVLO
TBLANK
Error Flag Output Resistance
Error Flag Off Current
Under-Voltage Lockout
FAULT Blanking
Conditions
Min
Typ
2.7
VIN = 5V, EN = Active
VIN = 5.5V, EN (EN) = Inactive
Low-to-High Transition
High-to-Low Transition
VEN = 0V to 5.5V
VIN = 5V, TA = 25°C
VIN = 3.0V, TA = 25°C
VIN = 5V, RL = 10Ω
VIN = 5V, RL = 10Ω
VIN = 5V, RL = 10Ω
VIN = 5V, RL = 10Ω
EN = Inactive, VIN = 5.5V, VOUT = 0V
Ramped Load Applied to Enable
Output, VOUT < 4.0V
TJ Increasing
TJ Decreasing
VIN = 5V, IL = 1mA
VFLG = 5.5V
VIN = Increasing, 1% Hysteresis
16
Max
Units
5.5
30
1
2.4
V
µA
µA
1
µA
pF
0.8
0.01
1
60
70
0.25
0.2
5
1.0
2.0
100
115
V
mΩ
0.03
20
20
15
ms
ms
µs
µs
µA
1.5
2.0
A
125
115
30
0.05
2.3
10
°C
1
2.7
Ω
µA
V
ms
4625.2006.04.1.2
AAT4625
USB Single-Channel Power Switch
Typical Characteristics
VIN = 5V, TA = 25°C, unless otherwise noted.
Quiescent Current
20
30
18
Input Current (μA)
Quiescent Current (μA)
Quiescent Current vs. Temperature
25
20
15
10
5
16
14
12
10
8
6
4
2
0
0
-40
-20
0
20
40
60
80
100
0
120
1
2
4
5
6
Off-Supply Current vs. Temperature
Current Limit
1.0000
Off-Supply Current (μA)
1.8
Output Current (A)
3
Input Voltage (V)
Temperature (°C)
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
1
2
3
4
5
0.1000
0.0100
0.0010
-40
Output Voltage (V)
-20
0
20
40
60
80
100
120
Temperature (°C)
Off-Switch Current vs. Temperature
Turn On/Off Response with 10Ω 1μF Load
Off-Switch Current (μA)
1.0000
EN
5V/div
0.1000
FAULT
5V/div
0.0100
0.0010
VOUT
2V/div
0.0001
0.0000
-40
-20
0
20
40
60
Temperature (°C)
4625.2006.04.1.2
80
100
120
IIN
200mA/div
Time (100μs/div)
5
AAT4625
USB Single-Channel Power Switch
Typical Characteristics
VIN = 5V, TA = 25°C, unless otherwise noted.
Start Into 1Ω Load
Thermal Shutdown Response
EN
5V/div
EN
5V/div
FAULT
5V/div
FAULT
5V/div
VOUT
1V/div
VOUT
1V/div
IIN
500mA/div
IIN
500mA/div
Time (1ms/div)
Time (50ms/div)
Short-Circuit Through 0.6Ω
12
8
Inpu t Voltage
4
4
Out put Current
2
0
Out put Voltage
0
-4
-1
0
1
2
3
4
5
8
9
6
Input Voltage
6
4
Output Current
3
2
Output Voltage
0
0
Output Current (A)
6
Input and Output Voltage (V)
8
Output Current (A)
Input and Output Voltage (V)
Short-Circuit Through 0.3Ω
-3
-1
0
1
2
3
4
5
Time (μs)
Time (μs)
RDS(ON) vs. Temperature
80.0
RDS(ON) (mΩ)
75.0
70.0
65.0
VCC = 3V
60.0
55.0
VCC = 5V
50.0
45.0
40.0
-40
-20
0
20
40
60
80
100
120
Temperature (°C)
6
4625.2006.04.1.2
AAT4625
USB Single-Channel Power Switch
Functional Block Diagram
IN
OUT
Undervoltage
Lockout
Over-Temperature
Protection
FLG
EN (EN)
1.2V
Reference
Current
Limit
GND
Functional Description
The AAT4625 is an integrated MOSFET load
switch with a fixed current limit, over-temperature
protection, level shifted input, and a fault flag.
The current limit control is combined with an overtemperature thermal limit circuit to provide a comprehensive system to protect the load switch
under short-circuit or other adverse operating
conditions. The AAT4625 is ideally suited for control and protection of peripheral ports such as
USB, RS232, and parallel ports.
The current limit and over-temperature circuits will
act independently. The device current limit is activated when the output load current exceeds a preset internal threshold level. The minimum current
limit threshold characteristic is specified by ILIM(MIN).
If the load switch ambient temperature becomes
excessive or if a short-circuit condition persists, the
die temperature will rise, causing the over-temperature protection circuit to activate.
4625.2006.04.1.2
If the current limit or over-temperature protection
circuits are active for more than two milliseconds,
the system will be informed via the FAULT flag. A
10ms fault blanking delay allows the AAT4625 to
be turned on into large capacitive loads without
activating the FAULT flag. The open drain FAULT
output can be connected directly to system controllers driven by voltage levels less than the IN pin
voltage without additional level shifting circuitry.
The load switch is turned on and off by applying a
logic level signal to the EN pin. The AAT4625
enable function is available in both active high and
active low logic level versions. The AAT4625 typically consumes 16µA when operating; when off, the
device draws less than 1µA. In the off state, current
is prevented from flowing between the input and output. The EN function has logic level thresholds that
allow the AAT4625 to be TTL compatible and may
also be controlled by 2.5V to 5.0V CMOS circuits.
The voltage level on either EN or FAULT should not
exceed the input supply level present on the IN pin.
7
AAT4625
USB Single-Channel Power Switch
Applications Information
Operation in Current Limit
If an excessive load is applied to the output of an
AAT4625, the load current will be limited by the
device’s current limit circuitry. Refer to the "Current
Limit" curve in the Typical Characteristics section of
this datasheet. If a short circuit were to occur on
the load, there would be a demand for more current
than what is allowed by the internal current limiting
circuit and the voltage at the device output will
drop. This causes the AAT4625 to dissipate more
power than in normal operation, causing the die
temperature to increase. When die temperature
exceeds the internal over-temperature threshold,
the AAT4625 will shut down. After shutting down,
the AAT4625 cools to a level below the over-temperature threshold, at which point it will start up
again. The AAT4625 will continue to cycle off and
on until one of the following events occurs: the load
current is reduced to a level below the AAT4625's
current limit setting; the input power is removed; or
the output is turned off by a logic high level applied
to the EN pin.
Thermal Considerations
Since the AAT4625 has internal current limit and
over-temperature protection, junction temperature
is rarely a concern. If an application requires a
large load current in a high-temperature operating
environment, there is the possibility that the overtemperature protection circuit (rather than the current limit circuit) will regulate the current available
to the load. In these applications, the maximum
current available without risk of activation of the
over-temperature circuit can be calculated. The
maximum internal temperature while current limit is
not active can be calculated using Equation 1:
Eq. 1: TJ(MAX) = IMAX2 × RDS(ON)(MAX) × RθJA + TA(MAX)
In Equation 1, IMAX is the maximum current
required by the load. RDS(ON)(MAX) is the maximum
rated RDS(ON) of the AAT4625 at high temperature.
RθJA is the thermal resistance between the device
die and the board onto which it is mounted. TA(MAX)
is the maximum ambient temperature for the print8
ed circuit board assembly under the AAT4625
when the load switch is not dissipating power.
Equation 1 can be transformed to provide IMAX;
Refer to Equation 2.
Eq. 2: IMAX =
TSD(MIN) - TA(MAX)
RDS(ON)(MAX) · RΘJA
TSD(MIN) is the minimum temperature required to
activate the device over-temperature protection.
The typical thermal limit temperature specification
is 125°C for the AAT4625; for calculations, 115°C is
a safe minimum value to use.
For example, a portable device is specified to operate in a 50°C environment. The printed circuit
board assembly will operate at temperatures as
high as 85°C. This portable device has a sealed
case and the area of the printed board assembly is
relatively small, causing RθJA to be approximately
120°C/W. Using Equation 2,
IMAX =
115 - 85
= 1.4A
130 · 120
If this system requires less than 1.4A, the thermal
limit will not activate during normal operation.
Input Capacitor
The input capacitor serves two purposes. First, it
protects the source power supply from transient
current effects generated by the application load
circuit. If a short circuit is suddenly applied to the
output of an AAT4625, there is a microsecond long
period during which a large current can flow before
the current limit circuit becomes active. Refer to
the characteristic curve "Short Circuit Through
0.3Ω." A properly sized input capacitor can dramatically reduce the load switch input transient
response effects seen by the power supply and
other circuitry upstream from the AAT4625.
The second purpose of the input capacitor is to prevent transient events generated by the load circuit
from affecting the operation of the AAT4625. For
example, if an AAT4625 is used in a circuit that operates from a 5V power supply with poor step load
response, turning on the load switch could cause the
4625.2006.04.1.2
AAT4625
USB Single-Channel Power Switch
input power supply to drop below the AAT4625's
under-voltage lockout threshold. This drop in voltage
would cause the AAT4625 to turn off until the input
power supply voltage level recovers. Since this cycle
would be self-perpetuating, the entire circuit could be
seen to be unstable. In the very rare case where
capacitor cost is prohibitive and the input capacitor is
omitted, the output load circuit should be slew rate
limited when turned on.
datasheet. When the AAT4625 is in the off state, the
output is an open circuit and the device quiescent
current consumption is reduced to less than 1µA.
The EN threshold voltage is set to allow the
AAT4625 to be controlled by 5V TTL levels, as well
as CMOS-compatible levels ranging from 2.5V to 5V.
The EN function control voltage level should not
exceed the input supply level applied to the IN pin.
Fault Flag Output
Output Capacitor
In order to insure stability while the device current
limit is active, a small capacitance of approximately
1µF should be used. When the AAT4625 is activated using the ON function, there are no momentary
current transients, as in the case when a short circuit is suddenly applied to a device that is already
on. Refer to the "Turn-On/Off Response" characteristics curve. Regardless of output capacitor size,
output current is limited to the value allowed by the
threshold determined by the internal current limiting
circuitry. Refer to the internal current limit threshold
specifications stated in the Electrical Characteristics
section of this datasheet. This permits very large
output capacitors to be used.
For example, USB ports are specified to have at
least 120µF of downstream capacitance from their
controlling power switch. An output capacitance as
large as 1000µF would not disturb the input power
supply to an AAT4625 used to control a USB port.
EN Input
The AAT4625 is available in both active high and
active low enable versions. For specific part numbers, refer to the Ordering Information section of this
The AAT4625 features an active low fault flag output. The fault flag is provided to alert the system
if the over-current or over-temperature circuits
become active or if the load switch is not receiving a sufficient voltage level to properly operate.
If either the current limit or over-temperature circuits in any combination are constantly active for
more than approximately 10ms, the FAULT pin is
pulled to ground internally through an open drain
device. The 10ms delay on the FAULT function is
intended to prevent capacitive loads connected to
the load switch output from activating the FAULT
flag when the device is turned on. The placement
of a pull-up resistor between the FAULT pin and
the IN pin is recommended. Reasonable values
for the pull-up resistor should range from 10kΩ to
100kΩ. Since the FAULT flag is an open drain terminal, it may be pulled up to any voltage that is
not greater than the level present on the IN pin.
This is done to allow the AAT4625 to signal ancillary circuitry that is powered by voltage levels less
than the level on the IN pin.
If a fault flag delay greater than 10ms is required,
addition delay may be added by use of an RC filter.
An RC filter can be added to the fault flag output,
as shown in Figure 1.
V+
USB Controller
Over-Current
Flag Input
100kΩ
R1
10kΩ
1
2
3
C1
0.1μF
4
AAT4625
EN
OUT
FLG
IN
GND
OUT
NC
NC
8
7
6
5
Figure 1: Fault Flag Delay RC Filter.
4625.2006.04.1.2
9
AAT4625
USB Single-Channel Power Switch
Reverse Voltage
Hot-Plug Applications
The AAT4625 is designed to control current flowing
from IN to OUT. If a voltage is applied to OUT
which is greater than that on IN, a large reverse
current may flow, potentially damaging the device.
Application circuit cards with a high inrush current
potential can be limited by use of the AAT4625.
The AAT4625 has both slew rate limited turn-on
characteristics and a current limit controlled output
which make it ideally suited for power port hot-plug
applications. A host power back plane or hot-plug
receptacle may be sensitive to short duration, high
power surges. The AAT4625 will turn on in a linear
ramping fashion and regulate the inrush current
within the specified current limit for the device. The
error flag usually will not be affected during application turn-on, since the 10ms flag blanking time is
intended for these types of events. If an application
turn-on current surge exceeds 10ms, an RC delay
filter may be added to the flag output to prevent the
system from receiving an error during the start-up
sequence (see Figure 2).
Under-Voltage Lockout
The AAT4625 has been designed with an under-voltage lockout control circuit. The under-voltage lockout prevents the output MOSFET device from turning on until VIN exceeds the typical UVLO threshold
of 2.3V. During operation, the device will automatically shut down if VIN falls below the UVLO threshold
and the fault flag will be toggled.
Cable / Connector
to Hot-Plug Port
V BUS
AAT4625
v+
1
2
3
Hot-Plug
Receptacle
0.1μF
4
GND
GND
EN
OUT
FLG
IN
GND
OUT
NC
NC
Card
Application
Circuit
8
7
6
5
CBULK
(120μF)
Inrush Current Protected
Application Card
Figure 2: AAT4625 Inrush Current Protected Application.
PCB Layout Information
In order to obtain maximum performance from the
AAT4625, very careful consideration must be given
to the printed circuit board layout. In most port
power switch and port protection applications, high
10
voltage and current transient events will occur.
Proper PCB layout can help reduce the effects of
transient events. PCB trace resistance will affect
overall circuit transient response; in addition, small
voltage drops will be incurred.
4625.2006.04.1.2
AAT4625
USB Single-Channel Power Switch
Refer to the following guidelines for power port
PCB layout:
1. PCB traces should be kept as short and direct
as possible to minimize the effects of the PCB
on circuit performance.
2. Make component solder pads large to minimize contact resistance.
3. The AAT4625 output bulk capacitor and ferrite
beads should be placed as close to the device
as possible. PCB traces to the output connec-
Trace Resistance
0.01Ω
(5mV)
tor should be kept as short as possible to minimized trace resistance and the associated
voltage drop (I2R loss).
4. If ferrite beads are used in the circuit, select ferrite beads with a minimum series resistance.
5. The use of PCB trace vias should be avoided
on all traces that conduct high currents. If vias
are necessary, make the vias as large as possible and use multiple vias connected in parallel to minimize their effect.
Ferrite Bead
and PCB Trace
Resistance
0.02Ω
(10mV)
P-Channel MOSFET
Switch On Resistance
0.06Ω
(30mV)
Cable, Connector,
and Contact
Resistance
0.03Ω
(15mV)
V+
Input
Power Supply
4.50V to 5.25V
VBUS
CBULK
0.1μF
CBULK
0.1μF
AAT4625
GND
GND
(5mV)
(10mV)
Downstream
Peripheral Port
500mA Max.
Load Current
(15mV)
Total Voltage Drop = 60mV
Figure 3: Summary of Typical Circuit Voltage Drops Caused by AAT4625
Circuit Components and PCB Trace Resistance.
Evaluation Board Layout
The AAT4625 evaluation layout (shown in Figures
4, 5, and 6) follows the recommend printed circuit
board layout procedures and can be used as an
Figure 4: Evaluation Board
Component Side Layout.
4625.2006.04.1.2
example for good application layouts. Note that
ferrite beads are not used on this simple device
evaluation board. The board layout shown is not
to scale.
Figure 5: Evaluation Board
Solder Side Layout.
Figure 6: Evaluation Board
Top Side Silk Screen Layout/
Assembly Drawing.
11
AAT4625
USB Single-Channel Power Switch
Application Circuits
Ferrite Beads
7
VBUS = 5.0V
IN
OUT
6,8
VBUS
AAT4625
CIN
R1
0.1μF 100kΩ
2
1
FLG
NC
COUT1
0.1μF
4,5
D+
COUT2
120μF
DGND
EN(EN)
3
USB Controller
Error Flag
On/Off
DATA
Figure 7: Typical USB Host Port Application.
Vcc
5.0V
4.50V to 5.25V
Upstream V BUS
100mA Maximum
VBUS
100kΩ
AAT3220-3.3
IN
OUT
3.3V USB Controller
VIN
D+
D-
ON/OFF
Over-Current
Flag
GND
GND
1μF
1μF
AAT4625
EN
IN
GND
OUT
USB Port
VBUS
OUT
FLG
NC
Ferrite Beads
D+
120μF
0.1μF
D-
NC
GND
GND
Data
Data
Figure 8: Self-Powered Single Port USB Hub.
100kΩ
USB Host
AAT3220-3.3
VBUS
IN
OUT
3.3V USB Controller
VIN
D+
D-
1μF
ON/OFF
Over-Current
Flag
GND
GND
1μF
AAT4625
EN
IN
GND
OUT
USB Port
VBUS
OUT
FLG
NC
Ferrite Beads
D+
120μF
0.01μF
D-
NC
GND
GND
Data
Data
Figure 9: USB Bus Powered Single Port USB Hub.
12
4625.2006.04.1.2
AAT4625
USB Single-Channel Power Switch
Ordering Information
Package
Enable
Marking1
Part Number (Tape and Reel)2
SOP-8
SOP-8
TSSOP-8
TSSOP-8
MSOP-8
MSOP-8
EN (Active-high)
EN (Active-low)
EN (Active-high)
EN (Active-low)
EN (Active-high)
EN (Active-low)
4625-1
4625
4625-1
4625
DDXYY
DCXYY
AAT4625IAS-1-T1
AAT4625IAS-T1
AAT4625IHS-1-T1
AAT4625IHS-T1
AAT4625IKS-1-T1
AAT4625IKS-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/pbfree.
Package Information
3.90 ± 0.10
6.00 ± 0.20
SOP-8
4.90 ± 0.10
0.42 ± 0.09 × 8
1.27 BSC
45°
4° ± 4°
0.175 ± 0.075
1.55 ± 0.20
0.375 ± 0.125
0.235 ± 0.045
0.825 ± 0.445
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on part numbers listed in BOLD.
4625.2006.04.1.2
13
AAT4625
USB Single-Channel Power Switch
6.40 ± 0.20
4.40 ± 0.10
TSSOP-8
12° REF × 4
3.00 ± 0.10
1.05 MAX
0.245 ± 0.055 × 8
1.20 MAX
0.65 BSC
0.145 ± 0.055
4° ± 4°
0.60 ± 0.15
0.10 ± 0.05
DETAIL A
12°
1.00
REF
All dimensions in millimeters.
14
4625.2006.04.1.2
AAT4625
USB Single-Channel Power Switch
MSOP-8
4° ± 4°
4.90 ± 0.10
3.00 ± 0.10
1.95 BSC
0.95 REF
0.60 ± 0.20
PIN 1
3.00 ± 0.10
0.85 ± 0.10
0.95 ± 0.15
10° ± 5°
GAUGE PLANE
0.254 BSC
0.155 ± 0.075
0.075 ± 0.075
0.65 BSC
0.30 ± 0.08
All dimensions in millimeters.
© 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 specifications or to discontinue any product or service without notice.
Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. AnalogicTech
warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with AnalogicTech’s standard warranty. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specific 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.
Advanced Analogic Technologies, Inc.
830 E. Arques Avenue, Sunnyvale, CA 94085
Phone (408) 737-4600
Fax (408) 737-4611
4625.2006.04.1.2
15