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AAT1162
12V, 1.5A Step-Down DC/DC Converter General Description
The AAT1162 is an 800kHz high efficiency stepdown DC/DC converter. With a wide input voltage range of 4.0V to 13.2V, the AAT1162 is an ideal choice for dual-cell Lithium-ion battery-powered devices and mid-power-range regulated 12V-powered industrial applications. The internal power switches are capable of delivering up to 1.5A to the load. The AAT1162 is a highly integrated device, simplifying system-level design. Minimum external components are required for the converter. The AAT1162 optimizes efficiency throughout the entire load range. It operates in a combination PWM/Light Load mode for improved light-load efficiency. The high switching frequency allows the use of small external components. The low current shutdown feature disconnects the load from VIN and drops shutdown current to less than 1A. The AAT1162 is available in a Pb-free, space-saving, thermally-enhanced 16-pin TDFN34 packageand is rated over an operating temperature range of -40C to +85C.
Features
* * * * * * * * * * * * *
SwitchRegTM
Input Voltage Range: 4.0V to 13.2V Up to 1.5A Load Current Fixed or Adjustable Output: -- Output Voltage: 0.6V to VIN Low 115A No-Load Operating Current Less than 1A Shutdown Current Up to 96% Efficiency Integrated Power Switches 800kHz Switching Frequency Soft Start Function Short-Circuit and Over-Temperature Protection Minimum External Components TDFN34-16 Package Temperature Range: -40C to +85C
Applications
* * * * * * * Distributed Power Systems Industrial Applications Laptop Computers Portable DVD Players Portable Media Players Set-Top Boxes TFT LCD Monitors and HDTVs
Typical Application
Input: 4.0V ~ 13.2V IN CIN EN DGND AIN LX
L
Output: 0.6V min, 1.5A max
2.2H
AAT1162
FB COUT 47F
COMP LDO
PGND AGND
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AAT1162
12V, 1.5A Step-Down DC/DC Converter Pin Descriptions
Pin #
1, 2, EP2
Symbol
LX
Function
Power switching node. LX is the drain of the internal P-channel switch and N-channel synchronous rectifier. Connect the output inductor to the two LX pins and to EP2. A large exposed copper pad under the package should be used for EP2. Not connected. Power source input. Connect IN to the input power source. Bypass IN to DGND with a 22F or greater capacitor. Connect both IN pins together as close to the IC as possible. An additional 100nF ceramic capacitor should also be connected between the two IN pins and DGND, pin 6 Exposed Pad 1 Digital Ground, DGND. The exposed thermal pad (EP1) should be connected to board ground plane and pins 6, 13, and 14. The ground plane should include a large exposed copper pad under the package for thermal dissipation (see package outline). Internal analog bias input. AIN supplies internal power to the AAT1162. Connect AIN to the input source voltage and bypass to AGND with a 0.1F or greater capacitor. For additional noise rejection, connect to the input power source through a 10 or lower value resistor. Internal LDO bypass node. The output voltage of the internal LDO is bypassed at LDO. The internal circuitry of the AAT1162 is powered from LDO. Do not draw external power from LDO. Bypass LDO to AGND with a 1F or greater capacitor. Output voltage feedback input. FB senses the output voltage for regulation control. For fixed output versions, connect FB to the output voltage. For adjustable versions, drive FB from the output voltage through a resistive voltage divider. The FB regulation threshold is 0.6V. Control compensation node. Connect a series RC network from COMP to AGND, R = 51k and C = 270pF. Analog signal ground. Connect AGND to PGND at a single point as close to the IC as possible. Active high enable input. Drive EN high to turn on the AAT1162; drive it low to turn it off. For automatic startup, connect EN to IN through a 4.7k resistor. EN must be biased high, biased low, or driven to a logic level by an external source. Do not let the EN pin float when the device is powered. Power ground. Connect AGND to PGND at a single point as close to the IC as possible.
3, 12 4, 5
N/C IN
6, 13, 14, EP1 7
DGND
AIN
8
LDO
9
FB
10 11 15
COMP AGND EN
16
PGND
Pin Configuration
TDFN34-16 (Top View)
LX LX N/C IN IN DGND AIN LDO
1 2 3 4 5 6 7 8
EP2
16 15 14 13
EP1
12 11 10 9
PGND EN DGND DGND N/C AGND COMP FB
2
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AAT1162
12V, 1.5A Step-Down DC/DC Converter Absolute Maximum Ratings1
Symbol
VIN, VAIN VLX VFB VEN TJ
Description
Input Voltage LX to GND Voltage FB to GND Voltage EN to GND Voltage Operating Junction Temperature Range
Value
-0.3 to 14 -0.3 to VIN + 0.3 -0.3 to VIN + 0.3 -0.3 to VIN + 0.3 -40 to 150
Units
V V V V C
Thermal Information3
Symbol
PD JA
Description
Maximum Power Dissipation4 Thermal Resistance
Value
2.7 37
Units
W C/W
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. Based on long-term current density limitation. 3. Mounted on an FR4 board. 4. Derate 2.7mW/C above 25C. 1162.2007.09.1.2
3
AAT1162
12V, 1.5A Step-Down DC/DC Converter Electrical Characteristics1
4.0V < VIN < 13.2V. CIN = COUT = 22F; L = 4.7H, TA = -40C to +85C, unless otherwise noted. Typical values are at TA = 25C. Symbol
VIN VUVLO IQ ISHDN VOUT VOUT VOUT/ VOUT/VIN VOUT/ IOUT VFB IFBLEAK FOSC DC TON TS RDS(ON)H RDS(ON)L ILIM ILXLEAK
Description
Input Voltage Range Input Under-Voltage Lockout Supply Current Shutdown Current Output Voltage Range Output Voltage Accuracy Line Regulation Load Regulation Feedback Reference Voltage (adjustable version) FB Leakage Current PWM Oscillator Frequency Foldback Frequency Maximum Duty Cycle Minimum Turn-On Time Soft-Start Time P-Channel On Resistance N-Channel On Resistance Efficiency PMOS Current Limit LX Leakage Current
Conditions
Rising Hysteresis No Load VEN = GND IOUT = 0A to 1.5A VIN = 4.5V to 13.2V VIN = 12V, VOUT = 5V, IOUT = 0A to 1.5A No Load, TA = 25C VOUT = 1.2V Adjustable Version Fixed Version
Min
4.0
Typ
Max
13.2 4.0
Units
V V A A V % %/V %
0.3 115 0.6 -2.5 0.023 0.4 0.59 0.60
200 1 0.94 VIN 2.5 0.100
0.61 0.2
V A MHz kHz % ns s % A A
0.6
2 0.8 200 100 200 0.12 0.15 0.06 0.08 93 3.0
1 94
VIN VIN VIN VIN VIN
= = = = =
12V 6V 12V 6V 12V, VOUT = 5V, IOUT = 1.5A 2.0
VIN = 13.2V, VLX = 0 to VIN
1
1. The AAT1162 is guaranteed to meet performance specifications over the -40C to +85C operating temperature range and is assured by design, characterization, and correlation with statistical process controls.
4
1162.2007.09.1.2
AAT1162
12V, 1.5A Step-Down DC/DC Converter Electrical Characteristics1
4.0V < VIN < 13.2V. CIN = COUT = 22F; L = 4.7H, TA = -40C to +85C, unless otherwise noted. Typical values are at TA = 25C. Symbol
TSD THYS VIL VIH IEN
Description
Over-Temperature Shutdown Threshold Over-Temperature Shutdown Hysteresis EN Logic Low Input Threshold EN Logic High Input Threshold EN Input Current
Conditions
Min
Typ
140 25
Max
Units
C C
0.4 VEN = 0V, VEN = 13.2V 1.4 -1.0 1.0
V V A
1. The AAT1162 is guaranteed to meet performance specifications over the -40C to +85C operating temperature range and is assured by design, characterization, and correlation with statistical process controls. 1162.2007.09.1.2
5
AAT1162
12V, 1.5A Step-Down DC/DC Converter Typical Characteristics
Test circuit of Figure 2, unless otherwise specified. Efficiency vs. Output Current
(VOUT = 5V)
100 90 80
100 90
Efficiency vs. Output Current
(VOUT = 3.3V)
Efficiency (%)
70 60 50 40 30 20 10 0 0.001 0.01
Efficiency (%)
VIN = 12V VIN = 10V VIN = 8.4V VIN = 6V
80 70 60 50 40 30 20 10 0
VIN = 12V VIN = 8.4V VIN = 6V VIN = 5V VIN = 10V
0.1
1
10
0.001
0.01
0.1
1
10
Output Current (A)
Output Current (A)
Switching Frequency vs. Temperature
Switching Frequency (kHz)
820 815 810 805 800 795 790 785 780 775 770 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 150 140
Non-Switching Quiescent Current vs. Temperature
VIN = 12V
Current (A)
5V
130 120 110 100 90 80 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
12V
VIN = 5V
Temperature (C)
Temperature (C)
Non-Switching Quiescent Current vs. Input Voltage
150 140
Switching Quiescent Current vs. Input Voltage
(VOUT = 5V)
220
Current (A)
130 120 110 100 90 80 5 6
85C
25C
Quiescent Current (A)
210 200 190 180 170 160 150 6 7 8
85C 25C
-40C
-40C
7
8
9
10
11
12
9
10
11
12
Input Voltage (V)
Input Voltage (V)
6
1162.2007.09.1.2
AAT1162
12V, 1.5A Step-Down DC/DC Converter Typical Characteristics
Test circuit of Figure 2, unless otherwise specified. Switching Quiescent Current vs. Input Voltage
(VOUT = 3.3V)
210 1000 900 800
On Time vs. Temperature
(VOUT = 3.3V)
Quiescent Current (A)
200 190 180 170 160 150 5 6
On Time (ns)
85C
25C
700 600 500 400 300 200 100
VIN = 5V VIN = 12V
-40C
7
8
9
10
11
12
0 -40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90
Input Voltage (V)
Temperature (C)
Output Voltage Tolerance vs. Temperature
(VOUT = 3.3V; ILOAD = 1.5A) Output Voltage Difference (%)
1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
Line Regulation
(VOUT = 5V) Output Voltage Difference (%)
0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 6 7 8 9 10 11 12
IOUT = 500mA
IOUT = 1.5A
IOUT = 1mA IOUT = 100mA
IOUT = 10mA
Temperature (C)
Input Voltage (V)
Line Regulation
(VOUT = 3.3V) Output Voltage Difference (%)
0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 5 6 7 8 9 10 11 12
Load Regulation
(VOUT = 5V) Output Voltage Difference (%)
0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 0.0001 0.001 0.01 0.1 1 10
I OUT = 1A I OUT = 10mA IOUT = 1.5A
VIN = 12V VIN = 10V
I OUT =100mA
I OUT = 1mA
VIN = 8.4V VIN = 6V
Input Voltage (V)
Output Current (mA)
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AAT1162
12V, 1.5A Step-Down DC/DC Converter Typical Characteristics
Test circuit of Figure 2, unless otherwise specified. Load Regulation
(VOUT = 3.3V) Output Voltage Difference (%)
0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 0.0001 0.001 0.01 0.1 1 10 120
N-Channel RDS(ON) vs. Temperature
VIN = 12V Resistance (m) VIN = 10V
100 80 60 40 20 0 -40 -30
VIN = 6V
VIN = 8.4V VIN = 5V VIN = 6V
VIN = 12V
-20
-10
0
10
20
30
40
50
60
70
80
90
Output Current (mA)
Temperature (C)
P-Channel RDS(ON) vs. Temperature
200 160 140 120 100 80 60 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 8
Line Transient
(VOUT = 3.3V; CFF = 100pF)
3.48 3.45 3.42 3.39 3.36 3.33 3.3 3.27 3.24
Output Voltage (bottom) (V)
Resistance (m)
VIN = 6V
Input Voltage (top) (V)
180
7 6 5 4 3 2 1 0
VIN = 12V
Temperature (C)
Time (20s/div)
Load Transient
(VOUT = 5V; CFF = 100pF)
5.2 4 3.5 1A 10mA 3 2.5 2 1.5 1 0.5 0 3.6
Load Transient
(VOUT = 3.3V; CFF = 100pF)
3.5 3 1.2A 10mA 2.5 2 1.5 1 0.5 0 -0.5
Load and Inductor Current (bottom) (A)
Load and Inductor Current (bottom) (A)
Output Voltage (top) (V)
Output Voltage (top) (V)
5 4.8 4.6 4.4 4.2 4 3.8 3.6
3.4 3.2 3 2.8 2.6 2.4 2.2 2
Time (50s/div)
Time (50s/div)
8
1162.2007.09.1.2
AAT1162
12V, 1.5A Step-Down DC/DC Converter Typical Characteristics
Test circuit of Figure 2, unless otherwise specified. Load Transient
(VOUT = 5V; No CFF)
5.4 4 3.5 1A 10mA 3 2.5 2 1.5 1 0.5 0 3.6
Load Transient
(VOUT = 3.3V; No CFF)
4 3.5 1.2A 3 2.5 2 10mA 1.5 1 0.5 0
Load and Inductor Current (bottom) (A)
Load and Inductor Current (bottom) (A)
Output Voltage (top) (V)
Output Voltage (top) (V)
5.1 4.8 4.5 4.2 3.9 3.6 3.3 3
3.4 3.2 3 2.8 2.6 2.4 2.2 2
Time (50s/div)
Time (50s/div)
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AAT1162
12V, 1.5A Step-Down DC/DC Converter Functional Block Diagram
AIN Note 1 FB Internal Power Current Sense Amp + + + Error Amp Current Mode Comparator Control Logic LX LDO LDO IN
Reference
PGND AGND
EN DGND
COMP . Note 1: For fixed output voltage versions, FB is connected to the error amplifier through the resistive voltage divider shown.
Functional Description
The AAT1162 is a current-mode step-down DC/DC converter that operates over a wide 4V to 13.2V input voltage range and is capable of supplying up to 1.5A to the load with the output voltage regulated as low as 0.6V. Both the P-channel power switch and N-channel synchronous rectifier are internal, reducing the number of external components required. The output voltage is adjusted by an external resistor divider; fixed output voltage versions are available upon request. The regulation system is externally compensated, allowing the circuit to be optimized for each application. The AAT1162 includes cycle-by-cycle current limiting, frequency foldback for improved short-circuit performance, and thermal overload protection to prevent damage in the event of an external fault condition. 10
Control Loop
The AAT1162 regulates the output voltage using constant frequency current mode control. The AAT1162 monitors current through the high-side Pchannel MOSFET and uses that signal to regulate the output voltage. This provides improved transient response and eases compensation. Internal slope compensation is included to ensure the current "inside loop" stability. High efficiency is maintained under light load conditions by automatically switching to variable frequency Light Load control. In this condition, transition losses are reduced by operating at a lower frequency at light loads.
1162.2007.09.1.2
AAT1162
12V, 1.5A Step-Down DC/DC Converter
Short-Circuit Protection
The AAT1162 uses a cycle-by-cycle current limit to protect itself and the load from an external fault condition. When the inductor current reaches the internally set 3.0A current limit, the P-channel MOSFET switch turns off and the N-channel synchronous rectifier is turned on, limiting the inductor and the load current. During an overload condition, when the output voltage drops below 50% of the regulation voltage (0.3V at FB), the AAT1162 switching frequency drops by a factor of 4. This gives the inductor current ample time to reset during the off time to prevent the inductor current from rising uncontrolled in a short-circuit condition.
Applications Information
Setting the Output Voltage
Figure 1 shows the basic application circuit for the AAT1162 and output setting resistors. Resistors R1 and R2 program the output to regulate at a voltage higher than 0.6V. To limit the bias current required for the external feedback resistor string while maintaining good noise immunity, the minimum suggested value for R2 is 5.9k. Although a larger value will further reduce quiescent current, it will also increase the impedance of the feedback node, making it more sensitive to external noise and interference. Table 1 summarizes the resistor values for various output voltages with R2 set to either 5.9k for good noise immunity or 59k for reduced no load input current.
Thermal Protection
The AAT1162 includes thermal protection that disables the regulator when the die temperature reaches 140C. It automatically restarts when the temperature decreases by 25C or more.
EP2 VIN 4.5V -13.2V R4 10 C6 0.1F C7 1 F 3 EN 4 IN 5 IN 7 AIN 6 DGND 13 DGND 16 PGND LX LX LX 1 2 9
L1 3.8H C3 100pF
VOUT 5V, 2A R1 43.2k C2 22F R2 5.9k
C1 22F
AAT1162
FB
COMP 10 AGND 11 DGND DGND EP1 LDO 14 8
R3 50k
C5 1 F
C4 270pF
Figure 1: Typical Application Circuit. The adjustable feedback resistors, combined with an external feed forward capacitor (C3 in Figure 1), deliver enhanced transient response for extreme pulsed load applications. The addition of the feed forward capacitor typically requires a larger output capacitor C2 for stability. Larger C3 values reduce overshoot and undershoot during startup and load changes. However, do not exceed 470pF to maintain stable operation.
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AAT1162
12V, 1.5A Step-Down DC/DC Converter
The external resistors set the output voltage according to the following equation:
R1 VOUT = 0.6V 1 + R2
Inductor Selection
For most designs, the AAT1162 operates with inductors of 2H to 4.7H. For output voltages above 3.3V, the minimum recommended inductor is 3.8H. For 3.3V and below, use a 2 to 2.2H inductor. For optimum voltage-positioning load transients, choose an inductor with DC series resistance in the 15m to 20m range. For higher efficiency at heavy loads (above 1A), or minimal load regulation (but some transient overshoot), the resistance should be kept below 18m. The DC current rating of the inductor should be at least equal to the maximum load current plus half the ripple current to prevent core saturation (1.5A + 263mA). Table 2 lists some typical surface mount inductors that meet target applications for the AAT1162. Manufacturer's specifications list both the inductor DC current rating, which is a thermal limitation, and the peak current rating, which is determined by the saturation characteristics. The inductor should not show any appreciable saturation under normal load conditions. Some inductors may meet the peak and average current ratings yet result in excessive losses due to a high DCR. Always consider the losses associated with the DCR and its effect on the total converter efficiency when selecting an inductor. For example, the 3.7H CDR7D43 series inductor selected from Sumida has an 18.9m DCR and a 4.3ADC current rating. At full load, the inductor DC loss is 28mW which gives only a 0.4% loss in efficiency for a 1.5A, 5V output.
or
VOUT R1 = V -1 * R2 REF
Table 1 shows the resistor selection for different output voltage settings. R2 = 5.9(k) R1 (k)
1.96 2.94 3.92 4.99 5.90 6.81 7.87 8.87 11.8 12.4 13.7 18.7 26.7 43.2
VOUT (V)
0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.8 1.85 2.0 2.5 3.3 5.0
R2 = 59(k) R1 (k)
19.6 29.4 39.2 49.9 59.0 68.1 78.7 88.7 118 124 137 187 267 432
Compensation
The AAT1162 step-down converter uses peak current mode control with slope compensation scheme to maintain stability with lower value inductors for duty cycles greater than 50%. The regulation feedback loop in the IC is stabilized by the components connected to the COMP pin, as shown in Figure 1.
Table 1: Resistor Selection for Different Output Voltage Settings. Standard 1% Resistors are Substituted for Calculated Values.
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1162.2007.09.1.2
AAT1162
12V, 1.5A Step-Down DC/DC Converter
Manufacturer
Sumida Sumida Coilcraft
Part Number
CDRH103RNP-2R2N CDR7D43MNNP-3R7NC MSS1038-382NL
L (H)
2.2 3.7 3.8
Max DCR (m)
16.9 18.9 13
Rated DC Current (A)
5.10 4.3 4.25
Size WxLxH (mm)
10.3x10.5x3.1 7.6x7.6x4.5 10.2x7.7x3.8
Table 2: Typical Surface Mount Inductors.
Layout Guidance
Figure 2 is the schematic for the evaluation board. When laying out the PC board, the following layout guideline should be followed to ensure proper operation of the AAT1162: 1. Exposed pad EP1 must be reliably soldered to PGND/DGND/AGND. The exposed thermal pad should be connected to board ground plane and pins 6, 11, 13, 14 and 16. The ground plane should include a large exposed copper pad under the package for thermal dissipation. 2. The power traces, including GND traces, the LX traces and the VIN trace should be kept short, direct and wide to allow large current flow. The L1 connection to the LX pins should be as short as possible. Use several via pads when routing between layers. 3. Exposed pad pin EP2 must be reliably soldered to the LX pins 1 and 2. The exposed thermal pad should be connected to the board LX connection and the inductor L1 and also pins 1 and 2. The LX plane should include a large exposed copper pad under the package for thermal dissipation.
4. The input capacitors (C9 and C1) should be connected as close as possible to IN (Pins 4 and 5) and DGND (Pin 6) to get good power filtering. 5. Keep the switching node LX away from the sensitive FB node. 6. The feedback trace for the FB pin should be separate from any power trace and connected as closely as possible to the load point. Sensing along a high-current load trace will degrade DC load regulation. The feedback resistors should be placed as close as possible to the FB pin (Pin 9) to minimize the length of the high impedance feedback trace. 7. The output capacitors C3, 4, and 5 and L1 should be connected as close as possible and there should not be any signal lines under the inductor. 8. The resistance of the trace from the load return to the PGND (Pin 16) should be kept to a minimum. This will help to minimize any error in DC regulation due to differences in the potential of the internal signal ground and the power ground.
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AAT1162
12V, 1.5A Step-Down DC/DC Converter
Enable J1
1
EP2 VIN
FB1 1.5A 330 C9 0.1F 16V
U1
R5 4.7k
15 4 5 3 7 6 13 16
AAT1162 LX LX LX FB COMP AGND N/C DGND LDO
1 2 9 10 11 12 14 8
L1 3.8H 6A C10 100pF C11 NP
VOUT
R1 43.2k C3 22F C3 22F C3 22F
R4 10 C2 10F 16V C1 22F 16V
EN IN IN N/C AIN DGND DGND
R3 51k C7 270pF
R2 5.9k
C8 0.1F 16V
PGND DGND EP1
LDO
C6 1F
DGND
Note: Connect GND, DGND, and AGND at IC FB1: Chip Ferrite Bead C10: Increase C10 to reduce overshoot
Figure 2: AAT1162 Evaluation Board Schematic.
Figure 3: AAT1162 Evaluation Board Component Side Layout.
Figure 4: AAT1162 Evaluation Board Solder Side Layout.
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1162.2007.09.1.2
AAT1162
12V, 1.5A Step-Down DC/DC Converter Ordering Information
Package
TDFN34-16
Marking1
YYXYY
Part Number (Tape and Reel)2
AAT1162IRN-0.6-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
TDFN34-16
3.000 0.050 0.700 0.050 1.600 0.050
Index Area
4.000 0.050
2.350 0.050
0.230 0.050
0.25 REF 1.600 0.050
0.430 0.050
Top View
Bottom View
0.750 0.050
0.050 0.050
0.230 0.050
Side View
All dimensions in millimeters.
1. XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 1162.2007.09.1.2
0.450 0.050
0.35 REF
15
AAT1162
12V, 1.5A Step-Down DC/DC Converter
(c) 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. 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 fitness 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. 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 16
1162.2007.09.1.2

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