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AAT3119
High Efficiency 2X Charge Pump General Description
The AAT3119 is a general purpose high efficiency voltage regulated charge pump IC that can produce output current levels up to 150mA. As a voltage regulated output device, it may be used for general voltage boost applications or to power white, RGB, or flash type LEDs from a 2.7V to 5.5V input. The voltage doubling charge pump architecture of the AAT3119 provides for a low external part count; just three small ceramic capacitors are needed. This makes the AAT3119 ideally suited for small battery-powered applications. This device operates from a fixed high frequency 1.2MHz oscillator which enables the use of very small external capacitors, one 1F flying capacitor, and two 1F bypass capacitors at IN and OUT. The AAT3119 has built-in soft-start circuitry which prevents excessive inrush current from the source supply during startup. A low-current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1.0A when the device is disabled. The AAT3119 is available in a Pb-free, 8-pin SC70JW package and is rated over the -40C to +85C temperature range.
Features
* * * * * * * * * * *
ChargePumpTM
VIN Range: 2.7V to 5.5V 150mA of Output Current -- Peak Current up to 250mA Regulated Output Voltage 1.2MHz Switching Frequency Low Noise Constant Frequency Operation <1.0A of Shutdown Current Automatic Soft Start Small Application Circuit Inductorless Boost 8-Pin SC70JW Package -40C to +85C Temperature Range
Applications
* * * * * * Cellular Phones Digital Cameras Handheld Electronics PDAs White LED Backlighting White LED Camera Flash
Typical Application
CFLY 1F
C+ VIN CIN 1F
IN
COUT COUT 1F VOUT
AAT3119
Enable EN GND
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AAT3119
High Efficiency 2X Charge Pump Pin Descriptions
Pin #
1 2 3 4 5 6 7 8
Symbol
EN IN OUT C+ CGND GND GND
Function
Enable input control pin. When low, the device is disabled and consumes less than 1A of current. This pin should not be left floating. Input power supply. A 1F capacitor should be connected between this pin and ground. Charge pump output. Connect a 1F capacitor between this pin and ground. Flying capacitor positive terminal. Connect a 1F capacitor between C+ and C-. Flying capacitor negative terminal. Ground connection. Ground connection. Ground connection.
Pin Configuration
SC70JW-8
EN IN OUT C+
1 2 3 4
8 7 6 5
GND GND GND C-
2
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AAT3119
High Efficiency 2X Charge Pump Absolute Maximum Ratings1
Symbol
VIN VOUT VEN
Description
Input Voltage Charge Pump Output EN to GND Voltage Maximum EN to Input Voltage Maximum DC Output Current Operating Junction Temperature Range Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6.0 -0.3 to 6.0 -0.3 to 6.0 0.3 250 -40 to 150 300
Units
V V V V mA C C
VEN(MAX) IOUT TJ TLEAD
Thermal Information2
Symbol
JA PD
Description
Thermal Resistance Maximum Power Dissipation3
Value
160 625
Units
C/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 board. 3. Derate 6.25mW/C above 25C. 3119.2005.08.1.1
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AAT3119
High Efficiency 2X Charge Pump Electrical Characteristics1
VIN = 3.3V; CIN = COUT = CFLY = 1.0F; TA = -40C to 85C, unless otherwise noted. Typical values are TA = 25C. Symbol
AAT3119-5.0 Power Supply VIN VOUT ISHDN IOUT EN VEN(L) VEN(H) Ii Charge Pump TSS FCLK AAT3119-4.5 Power Supply VIN VOUT ISHDN IOUT EN VEN(L) VEN(H) Ii Charge Pump TSS FCLK Enable Threshold Low Enable Threshold High Enable Input Current Soft-Start Time Clock Frequency 0.4 EN = 5.5V 1.4 -1.0 200 1200 1.0 V V A s kHz ICC Enable Threshold Low Enable Threshold High Enable Input Current Soft-Start Time Clock Frequency 0.4 EN = 5.5V 1.4 -1.0 200 1200 1.0 V V A s kHz ICC
Description
Conditions
Min Typ Max Units
Input Voltage Range Output Voltage Tolerance Output Voltage Operating Current Shutdown Current Maximum Output Current Efficiency
2.7 2.7V < VIN < 5V, IOUT = 50mA 3.0V < VIN < 5V, IOUT = 100mA VIN = 5.0V, Active, No Load Current EN = 0 3.0 VIN 5.5 VIN = 3.0V, IOUT = 100mA 4.8 4 5.0 2.0
5.5 5.2 4.5 1.0
150 82
V % V mA A mA %
Input Voltage Range Output Voltage Operating Current Shutdown Current Maximum Output Current Efficiency 2.7V < VIN < 5V, IOUT = 50mA 3.0V < VIN < 5V, IOUT = 100mA VIN = 4.5V, Active, No Load Current EN = 0 3.0 VIN 5.5 VIN = 2.7V, IOUT = 100mA
2.7 4.32 4 4.5 2.0
5.5 4.68 4.5 1.0
150 82
V % V mA A mA %
1. The AAT3119 is guaranteed to meet performance specifications from 0C to 70C. Specification over the -40C to +85C operating temperature range is assured by design, characterization, and correlation with statistical process controls.
4
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AAT3119
High Efficiency 2X Charge Pump Typical Characteristics _ AAT3119-5V
Output Voltage vs. Output Current
5.4 3.00
Supply Current vs. Supply Voltage
IOUT = 0A CFLY = 1F VEN = VIN
Supply Current (mA)
200
5.2
Output Voltage (V)
5.0 4.8 4.6 4.4 4.2 4.0 0 40 80 120
VIN = 3.6
2.75 2.50 2.25 2.00 1.75 1.50 1.25
VIN = 2.7
VIN = 3.0
VIN = 3.3
160
1.00 2.5
3.0
3.5
4.0
4.5
5.0
Output Current (mA)
Supply Voltage (V)
Supply Current vs. VEN
5
Efficiency vs. Supply Voltage
100 90 80 70 60 50 40 30 20 10 0 100mA 150mA 50mA
Supply Current (mA)
IOUT = 0A Efficiency (%)
4 3 2 1 0 0 1 VIN = 2.8V VIN = 3.3V VIN = 5.5V 2 3 4 5 6
2.7
3.0
3.3
3.6
3.9
4.2
4.5
VEN Control Voltage (V)
Supply Voltage (V)
Efficiency vs. Load Current
90 80 VIN = 3.0V
Oscillator Frequency vs. Supply Voltage
Oscillator Frequency (MHz)
1.30
100 VIN = 2.7V
Efficiency (%)
70 60 50 40 30 20 10 0 0.1 1.0 10 100 1000 VIN = 3.3V VIN = 3.6V
1.25 +25C 1.20 +85C -40C
1.15
1.10 2.7 3.2 3.7 4.2 4.7
Load Current (mA)
Supply Voltage (V)
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AAT3119
High Efficiency 2X Charge Pump Typical Characteristics _ AAT3119-5V
Start-Up Time with 50mA Load Start-Up Time with 100mA Load
ENABLE (1V/div)
ENABLE (1V/div)
VOUT (1V/div)
VOUT (1V/div)
Time (100s/div)
Time (100s/div)
Load Response
(50mA Load) VIN = 3.5V VOUT (10mV/div) VOUT (10mV/div) VIN = 3.5V
Load Response
(100mA Load)
IOUT (20mA/div)
IOUT (50mA/div)
Time (5ms/div)
Time (5ms/div)
Output Ripple Voltage
(IOUT = 50mA @ VIN = 3.5V) VIN (10mV/div) VIN (10mV/div)
Output Ripple Voltage
(IOUT = 100mA @ VIN = 3.5V)
VOUT (10mV/div)
VOUT (20mV/div)
IIN (10mA/div) Time (1s/div)
IIN (10mA/div) Time (1s/div)
6
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AAT3119
High Efficiency 2X Charge Pump Typical Characteristics _ AAT3119-4.5V
Output Voltage vs. Output Current
5.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 0 40 80 120 160 200
Supply Current vs. Supply Voltage
3.00
IOUT = 0A 2.75 CFLY = 1F VEN = VIN 2.50
Output Voltage (V)
Supply Current (mA)
VIN=3.3
VIN=3.6
2.25 2.00 1.75 1.50 1.25 1.00 2.5 3.0 3.5 4.0 4.5 5.0
VIN = 2.7
VIN = 3.0
Output Current (mA)
Supply Voltage (V)
Supply Current vs. VEN
5
Efficiency vs. Supply Voltage
IOUT = 0A Efficiency (%)
100 90 80 70 60 50 40 30 20 10 0 2.7 3.0 3.3 3.6 3.9 4.2 4.5 100mA 150mA 50mA
Supply Current (mA)
4 3 2 1 0 VIN = 2.8V VIN = 3.3V VIN = 5.5 0 1 2 3 4 5 6
VEN Control Voltage (V)
Supply Voltage (V)
Efficiency vs. Load Current
90 80 VIN = 3.0V VIN = 2.7V
Oscillator Frequency vs. Supply Voltage
Oscillator Frequency (MHz)
1.30 +85C 1.25 +25C -40C
100
Efficiency (%)
70 60 50 40 30 20 10 0 0.1 1.0 10 100 1000 VIN = 3.3V VIN = 3.6V
1.20
1.15
1.10 2.7 3.0 3.3 3.6 3.9 4.2 4.5
Load Current (mA)
Supply Voltage (V)
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AAT3119
High Efficiency 2X Charge Pump Typical Characteristics _ AAT3119-4.5V
Load Response
(50mA Load) VIN = 3.5V VOUT (10mV/div) VOUT (10mV/div) VIN = 3.5V
Load Response
(100mA Load)
IOUT (20mA/div)
IOUT (50mA/div)
Time (5ms/div)
Time (5ms/div)
Output Ripple Voltage
(IOUT = 50mA @ VIN = 3.5V) VIN (10mV/div) VOUT (10mV/div) VIN (10mV/div) VOUT (20mV/div)
Output Ripple Voltage
(IOUT = 100mA @ VIN = 3.5V)
IIN (10mA/div) Time (1s/div)
IIN (10mA/div) Time (1s/div)
Maximum Current Pulse vs. Supply Voltage
Maximum Current Pulse (mA)
600 500 400 300 200 100 0 One-shot pulse duration = 250ms VOUT> 4.0V
Startup
ENABLE (1V/div)
ILOAD = 150mA @ VIN = 3.3V ILOAD = 100mA @ VIN = 3.0V
VOUT (1V/div)
3.0 3.2 3.4 3.6 3.8 4.0 4.2
ILOAD = 150mA @ VIN = 3.3V
Supply Voltage (V)
Time (100s/div)
8
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AAT3119
High Efficiency 2X Charge Pump Typical Characteristics _ AAT3119
VIN vs. VIH
1.00 0.95 0.90 0.85 -40C +25C 1.00 0.95 0.90 0.85 -40C +25C
VIN vs. VIL
VIH (V)
0.75 0.70 0.65 0.60 0.55 0.50
VIL (V)
0.80
0.80 0.75 0.70 0.65 0.60 0.55 0.50
+85C
+85C
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Supply Voltage (V)
Supply Voltage (V)
VEN Threshold vs. Supply Voltage
1.00 0.95
Normalized Output Voltage vs. Temperature
Normalized Output Voltage (%)
2.0 1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -50 -30 -10 10 30 50 70 90
VEN Threshold (V)
0.90 0.85 0.80 0.75 0.70 0.65 0.60 0.55 0.50 2.7 3.1
IOUT = 25mA
VIH VIL
3.5
3.9
4.3
4.7
5.1
5.5
Supply Voltage (V)
Temperature (C)
3119.2005.08.1.1
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AAT3119
High Efficiency 2X Charge Pump Functional Block Diagram
C1+ IN C1-
Charge Pump
OUT
Soft Start 1MHz Oscillator
Voltage Reference
EN GND
Functional Description
The AAT3119 is a 5.0V or 4.5V regulated voltage doubling charge pump device intended for general applications that require low noise voltage boost function from input supplies ranging from 2.7V to 5.5V. The charge pump is capable maintaining the regulated voltage output for continuous output current loads up to 150mA. This makes the AAT3119 ideal for general purpose voltage boost applications, driving white and RGB color LEDs, as well as USB OTG VBUS supplies in portable products. The AAT3119 charge pump and regulation circuit is also capable of supplying peak pulse currents up to 250mA for 500ms. This makes the device suitable for many photo-flash LED applications. The AAT3119 accomplishes the voltage boost function by utilizing a voltage doubling (2X) charge pump. The charge pump block within the device uses low RDS MOSFET switches to transfer charge from the input to output via a flying capacitor (CFLY). This switching process is performed over two phases of each clock cycle which is set by the fixed 1.2MHz internal oscillator. On the first phase of each clock cycle, the flying capacitor is placed in parallel with the input (IN) and is charged to the level of the input voltage across CIN. On the second
phase of the switching cycle, the flying capacitor is reconfigured by the internal switches and placed in series with the input capacitor. CIN and CFLY are then placed across the output capacitor (COUT). The voltage seen on COUT is then two times that of CIN. The AAT3119 contains an internal reference and feedback system that senses the charge pump output and controls the charge pump function to maintain an accurate regulated output voltage. Because of the fixed 1.2MHz high frequency internal oscillator, the input, output, and flying capacitors are very small. This circuit architecture requires only one 1F ceramic capacitor for the charge pump flying capacitor (CFLY) and one 1F ceramic capacitor for both CIN and COUT. The AAT3119 has a soft-start circuit to prohibit inrush current when the device is enabled. This feature guarantees a smooth transition to the desired output voltage when the device is turned on. The system soft-start circuit is particularly useful in white LED backlight applications where the use of a PWM signal is employed as an LED dimming function. In limiting the input inrush current each time the device is turned on, the soft-start circuit helps minimize back-injected switching noise and transient supply current.
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AAT3119
High Efficiency 2X Charge Pump
In the operating state, the AAT3119 typically consumes 2mA of quiescent operating current. The enable pin (EN) is an active high input. When pulled low, the AAT3119 is shut down, the quiescent current drops to less than 1A, and the output is disconnected from the input.
Capacitor Selection
Careful selection of the three external capacitors (CIN, CFLY, and COUT) is important because they will affect turn-on time, output ripple, efficiency, and load transient response. Optimum performance will be obtained when low equivalent series resistance (ESR) ceramic capacitors are used. In general, low ESR may be defined as less than 100m. A value of 1F for all three capacitors is a good starting point when designing with the AAT3119. This not only provides for a very small printed circuit board area, but cost is further reduced by the minimized bill of materials.
Charge Pump Efficiency
The core of the AAT3119 is a regulated output voltage doubling charge pump. The efficiency () for an ideal voltage doubling charge pump can typically be expressed as the output power divided by the input power: POUT PIN
=
Input Capacitor
A 1F multilayer ceramic chip capacitor is suggested for the input. This capacitor should be connected between the IN pin and ground. 1F should be suitable for most applications. Even though the AAT3119 switching ripple and noise are very low, back-injected line noise may be further reduced by increasing the value of CIN. Other types of capacitors may be used for CIN at the cost of compromised circuit performance.
In addition, with an ideal voltage doubling charge pump, the output current may be expressed as half the input current. The expression to define the ideal efficiency () can be rewritten as: POUT VOUT x IOUT V = = OUT VIN x 2IOUT 2VIN PIN
= -or-
Output Capacitor
VOUT 2VIN The output capacitor (COUT) should be connected between the OUT pin and ground. A 1F ceramic capacitor is also suggested in this position. Switching noise and ripple seen on the charge pump output increases with load current. Typically 1F is sufficient for minimizing output ripple seen by the load circuit. If the load current in an application is low, or if higher levels of switching ripple can be tolerated, COUT can be reduced as low as 0.33F. If application circuits with greater load current demands require lower switching ripple amplitudes, COUT may be increased to values above 1F. Capacitor types other than ceramic capacitors can be used for COUT. However, capacitors comprised of materials other than ceramic will typically have a greater value of ESR, resulting in increased output switching ripple.
(%) = 100
For a charge pump with an output of 5.0 volts and a nominal input of 3.0 volts, the theoretical efficiency is 83.3%. Due to internal switching losses and IC quiescent current consumption, the actual efficiency can be measured at approximately 82%. Efficiency will decrease as the level of VIN approaches that of the regulated VOUT. Refer to the device typical characteristics curves for expected actual efficiency based on either input voltage or load current.
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AAT3119
High Efficiency 2X Charge Pump
Flying Capacitor
Due to the switching operation of the voltage doubling circuit topology, current flow through the flying capacitor is bi-directional. The flying capacitor selected must be a non-polarized type. A 1F low ESR ceramic capacitor is ideal for this application.
Applications Information
White LED Backlight Driver
LED Selection: In applications where the AAT3119 is utilized as a white LED backlight driver, LEDs with forward voltages up to 5.0V may be used. The AAT3119 is available in two regulated output voltage versions: 4.5V and 5.0V. The output voltage option selected will determine the maximum LED forward voltage that can be driven. The trade-off for the lower 4.5V output voltage version is the device's ability to supply greater output current. Refer to the "Output Voltage vs. Output Current" curves in the Typical Characteristics section of this datasheet to determine the best AAT3119 output voltage option based on the requirements of a given application. LED Ballast Resistors: To set the maximum brightness of white LEDs connected in parallel from a voltage source supply, a ballast resistor connected between each LED cathode and ground is required. Refer to the application schematic in Figure 1. The maximum brightness is determined by the forward current (IF) through the respective LED for a given forward voltage (VF). The typical forward voltage of a specific LED is usually stated in the typical characteristics of the given LED manufacturer's datasheet. The correct ballast resistor value can be determined by the following equation: (VOUT - VF) IF
Capacitor Characteristics
Ceramic composition capacitors are highly recommended over all other types of capacitors for use with the AAT3119. Ceramic capacitors offer many advantages over their tantalum and aluminum electrolytic counterparts. A ceramic capacitor typically has very low ESR, is lowest cost, has a smaller PCB footprint, and is non-polarized. Low ESR ceramic capacitors help maximize charge pump transient response. Since ceramic capacitors are non-polarized, they are not prone to incorrect connection damage. Equivalent Series Resistance: ESR is an important characteristic to consider when selecting a capacitor. ESR is a resistance internal to a capacitor that is determined by the leads, internal connections, size or area, material composition, and ambient temperature. Capacitor ESR is typically measured in milliohms for ceramic capacitors and can range to more than several ohms for tantalum or aluminum electrolytic capacitors. Ceramic Capacitor Materials: Ceramic capacitors less than 0.1F are typically made from NPO or C0G materials. NPO and C0G materials typically have tight tolerance and are stable over temperature. Large capacitor values are typically composed of X7R, X5R, Z5U, or Y5V dielectric materials. Large ceramic capacitors, typically greater than 2.2F, are often available in low-cost Y5V and Z5U dielectrics, but large capacitors are not required in most AAT3119 applications. Capacitor area is another contributor to ESR. Capacitors that are physically large will have a lower ESR when compared to an equivalent material smaller capacitor. These larger devices can improve circuit transient response when compared to an equal value capacitor in a smaller package size.
RB = Where: RB VF IF = = =
Ballast resistor value in ohms () Regulated charge pump output voltage LED forward voltage at the desired forward current Desired LED forward current
VOUT =
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AAT3119
High Efficiency 2X Charge Pump
CFLY 1F
C1+
C1OUT COUT 1F
D1 D2 D3 D4 D5 D6
IN
VBATTERY CIN 1F
AAT3119
Enable EN GND
RB1 RB2 RB3 RB4 RB5 RB6
Figure 1: White LED Driver.
Flash LED Driver
The AAT3119 can source 250mA for pulsed loads up to 500ms from an input supply as low as 3.3V. This makes the device well suited for low-cost flash LED driver applications in portable products. Typically the 4.5V output version of the AAT3119 should be selected for photo-flash LED applications, as it can maintain better voltage regulation at higher pulsed load current levels (refer to Figure 2). The limitation of this option is that the greatest flash LED forward voltage (VF) that can be driven is 4.5V at the maximum set forward current (IF) for the application. Flash LEDs with forward voltage (VF) levels up to 5.0V can be driven by the AAT3119 5.0V output option. However, the maximum current for a 500ms pulse will be reduced. Refer to the Typical Characteristics curves for peak output current levels for a given minimum input voltage. The forward current (IF) through the flash LED may be determined with the use of a series ballast resistor. The typical forward voltage (VF) for the flash LED in a given application should be derived from the LED manufacturer's datasheet for the desired
forward current (IF) of the flash application. Once the forward current has been determined, the flash ballast resistor can be calculated using the following equation: (VOUT - VF) IF
RF = Where: RF =
Flash ballast resistor value in ohms () Regulated charge pump output voltage (typically 4.5V) Flash LED forward voltage at the desired forward current Desired flash LED forward current
VOUT = VF IF = =
The flash LED function can be controlled by the AAT3119 enable pin in most applications. The device start-up time into a maximum load is about 200s, thus eliminating the need for pre-flash control synchronization.
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AAT3119
High Efficiency 2X Charge Pump
CFLY 1F
4.5V VIN CIN 1F
IN
OUT COUT 1F
AAT3119
RF Enable EN GND
Flash LED
Figure 2: Flash LED Application.
If a "light" or "movie" mode is also needed along with the flash function, this can be accomplished with the addition of a second ballast resistor with a flash function gating MOSFET switch as shown in Figure 3. Refer to the following equations for the calculation of flash and light resistors, RF and RL. (VOUT - VF) RL = IF Where: RL = Light mode ballast resistor value in ohms () Regulated charge pump output voltage (typically 4.5V) Flash LED forward voltage at the desired forward current Desired flash LED forward current in the "light" mode
RF = Where: RF RDS = =
(VOUT - VF) - RDS IF
Flash ballast resistor value in ohms () Flash gating MOSFET on resistance Regulated charge pump output voltage (typically 4.5V) Flash LED forward voltage at the desired forward current Desired flash LED forward current
VOUT = VF IF = =
VOUT = VF IF = =
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3119.2005.08.1.1
AAT3119
High Efficiency 2X Charge Pump
CFLY 1F
4.5V VIN CIN 1F
IN
OUT COUT 1F
AAT3119
Enable EN GND
Flash LED
RL
RF
Flash Enable
Figure 3: Flash LED Driver with Gated Flash Application.
Layout Considerations For the AAT3119, the high charge pump switching frequencies and large peak transient currents require careful printed circuit board layout. As a general rule for charge pump boost converters, the three external capacitors should be located as closely as possible to the device package with min-
imum length trace connections. Maximize ground plane around the AAT3119 charge pump and make sure all external capacitor are connected to the immediate power ground plane. A local component side ground plane is recommended. If this is not possible due the layout area limitations, assure good ground connections by the use of large or multiple printed circuit board vias. Refer to the following basic AAT3119 evaluation board shown in Figures xxx for an example of the recommended charge pump layout design.
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AAT3119
High Efficiency 2X Charge Pump Ordering Information
Package
SC70JW-8 SC70JW-8
Marking1
MUXYY MVXYY
Part Number (Tape and Reel)2
AAT3119IJS-4.5-T1 AAT3119IJS-5.0-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
SC70JW-8
0.50 BSC 0.50 BSC 0.50 BSC
1.75 0.10 0.225 0.075 2.00 0.20
2.20 0.20
0.048REF 0.85 0.15 0.15 0.05
1.10 MAX
0.100
7 3
0.45 0.10 2.10 0.30
4 4
All dimensions in millimeters. 1. XYY = assembly and date code. 2. Sample stock is held on part numbers listed in BOLD.
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, and advise customers 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.
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830 E. Arques Avenue, Sunnyvale, CA 94085 Phone (408) 737-4600 Fax (408) 737-4611 16
3119.2005.08.1.1
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