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AME AME5249 n General Description The AME5249 is a fixed-frequency current mode synchronous PWM step down converter that is capable of delivering 600mA output current while achieving peak efficiency of 95%. Under light load conditions, the AME5249 operates in a power saving mode that consumes just around 20A of supply current, maximizing battery life in portable applications. The AME5249 operates with a fixed frequency of 1.5MHz, minimizing noise in noise-sensitive applications and allowing the use of small external components. The AME5249 is an ideal solution for applications powered by Li-Ion batteries or other portable applications that require small board space. The AME5249 is available in a variety of fixed output voltage options, 1.0V, 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, 2.7V, 2.8V, and 3.3V, and is also available in an adjustable output voltage version capable of generating output voltages from 0.6V to VIN . The AME5249 is available in the tiny 5-pin SOT-25 and TSOT-25 package. 1.5MHz, 600mA Synchronous Buck Converter n Applications l Blue Tooth Headsets l Portable Audio Players l Mobile Phones l Wireless and DSL Modems l Digital Still Cameras l Portable Instruments n Typical Application VIN 2.5V to 5.5V IN CIN 4.7F SW L 4.7H VOUT AME5249 EN GND FB COUT 10F n Features l High Efficiency - Up to 95% l Very Low 20A Quiescent Current l Guaranteed 600mA Output Current l 1.5MHz Constant Frequency Operation PWM l Internal Synchronous Rectifier Eliminates Schottky Diode l Adjustable Output Voltages From 0.6V to VIN l Fixed Output Voltage Options Available 1.0V, 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, 2.7V, 2.8V and 3.3V l 100% Duty Cycle Low-Dropout Operation l 0.1A Shutdown Current l Require Tiny Capacitors and Inductor l Tiny SOT-25 and TSOT-25 Package l All AME's Lead Free Products Meet RoHS Standards VIN 2.5V to 5.5V Figure 1. Fixed Voltage Regulator L 4.7H IN SW C1 22pF VOUT 1.8V/600mA R1 887K R2 442K COUT 10F CIN 4.7F AME5249 EN GND FB Figure 2. Adjustable Voltage Regulator Rev.A.01 1 AME AME5249 Function Block Diagram EN VIN 1.5MHz, 600mA Synchronous Buck Converter Current Limit Comparaotr 1.5 MHz Oscillator OSC Current Sense Bandgap FB S UVLO Slope Comp + EA Fixed Output See Note + COMP - R Q Logic Control SW Driver Thermal Shudown COMP + GND Figure 3 Note: For the fixed output version the internal feedback divider is actived. For the adjustable version the internal feedback divider is disabled, and the FB pin is directly connected to the internal EA amplifer. 2 Rev.A.01 AME AME5249 n Pin Configuration SOT-25/TSOT-25 Top View 5 4 1.5MHz, 600mA Synchronous Buck Converter AME5249-AEVxxx 1. EN 2. GND AME5249 3. SW 4. IN 5. FB/OUT 1 2 3 Die Attach: Conductive Epoxy Rev.A.01 3 AME AME5249 n Pin Description Pin Number 1 1.5MHz, 600mA Synchronous Buck Converter Pin Name EN Pin Description Enable Control Input. The enable pin is an active high control. Tie this pin above 1.4V to enable the device. Tie this pin below 0.4V to shut down the device. In shutdown, all function are disabled. Do not leave EN pin floating. Ground Tie directly to ground plane. Switch Node Connection to Inductor. Input Supply Voltage Pin. Bypass this pin with a capacitor as close to the device as possible FB:Output voltage Feedback input. Set the output voltage by selecting values for R1 and R2 using: R1 = R2 (V OUT/0.6V -1) Connect the ground of the feedback network to an AGND (Analog Ground) plane which should be tied directly to the GND pin. OUT:Output Pin 2 3 4 GND SW IN 5 FB/OUT 4 Rev.A.01 AME AME5249 n Ordering Information AME5249 - x x x xxx x 1.5MHz, 600mA Synchronous Buck Converter Special Feature Output Voltage Number of Pins Package Type Pin Configuration Pin Configuration A (SOT-25) (TSOT-25) Package Type E: SOT-2X Number of Pins V: 5 Output Voltage Special Feature 1. EN 2. GND 3. SW 4. IN 5. FB/OUT ADJ: 100: 120: 130: 150: 180: 250: 270: 280: 330: Adjustable 1.0V 1.2V 1.3V 1.5V 1.8V 2.5V 2.7V 2.8V 3.3V N/A: SOT-25 L: TSOT-25 (Low Profile) Rev.A.01 5 AME AME5249 n Available Options Part Number AME5249-AEVADJ AME5249-AEVADJL 1.5MHz, 600mA Synchronous Buck Converter Marking* BYOMXX BYOMXX Output Voltage ADJ ADJ Package SOT-25 TSOT-25 Operating Ambient Temperature Range -40OC to +85OC -40OC to +85OC Note: 1. The first 3 places represent product code. It is assigned by AME such as BYO. 2. A bar on top of first letter represents Green Part such as BYO. 3. The last 3 places MXX represent Marking Code. It contains M as date code in "month", XX as LN code and that is for AME internal use only. Please refer to date code rule section for detail information. 4. Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type. 6 Rev.A.01 AME AME5249 n Absolute Maximum Ratings Parameter Input Voltage EN, FB SW, VOUT ESD Classification 1.5MHz, 600mA Synchronous Buck Converter Symbol VIN VEN, VFB VSW , V OUT Maximum -0.3 to +6.5 -0.3 to VIN -0.3 to VIN B* Unit V V V Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. * HBM B:2000V~3999V n Recommended Operating Conditions Parameter Input Supply Voltage Ambient Temperature Range Junction Temperature Range Storage Temperature Range Symbol VIN TA TJ TSTG Rating -0.3 to 6.5 -40 to +85 -40 to +125 -65 to +150 Unit V o C n Thermal Information Parameter Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Solder Iron (10 Sec)** SOT-25* TSOT-25 Conductive Epoxy Package Die Attach Symbol JC JA PD Maximum 81 Unit o C/W 260 400 350 mW o C * Measure JC on backside center of molding compund if IC has no tab. ** MIL-STD-202G 210F Rev.A.01 7 AME AME5249 n Electrical Specifications VIN=3.6V, EN=VIN, TA = 25OC, unless otherwise noted Parameter Input Voltage Symbol VIN VIN =2.5 to 5.5V, VOUT=1.0V 0A < IOUT < 600mA VIN =2.5 to 5.5V, VOUT=1.2V 0A < IOUT < 600mA VIN =2.5 to 5.5V, VOUT=1.5V 0A < IOUT < 600mA VIN =2.5 to 5.5V, VOUT=1.8V Output Voltage Accuracy (by every fixed output voltage) VOUT 0A < IOUT < 600mA VIN =VOUT+V to 5.5V (Note 1) VOUT=2.5V, 0A Output Voltage Accuracy (Adj) Adjustable Output Range Feedback Voltage Feedback Pin Bias Current VFB IFB V nA 8 Rev.A.01 AME AME5249 n Electrical Specifications (Contd.) VIN=3.6V, EN=VIN, TA = 25OC, unless otherwise noted Parameter High-side Switch On-Resistance Low-side Switch On-Resistance Switch Current Limit Symbol RDS,ON,HI RDS,ON,LO ISW,CL Test Condition ISW =100mA ISW =-100mA VIN=3V, VOUT=1.2V VEN =0V, VSW =0V or 3.6V, VIN =3.6V VFB=0.6V or VOUT=100% 1.2 1 Min Typ 0.4 0.35 1.25 Max 0.6 0.5 Units A A 1.5MHz, 600mA Synchronous Buck Converter Switch Leakage Current ISW,LK 0.01 1 Switch Frequency fOSC 1.5 1.8 MHz Short Circuit Oscillator Frequency Maximum Duty Cycle Input Undervoltage Lockout Input Undervoltage Lockout Hysteresis Enable High (Enabled the Device) Enable Low (Shutdown the Device) EN Input Current (Enable the Device) Thermal Shutdown Temperature Thermal Shutdown Hysteresis fOSC,SCR DMAX VUVLO VUVLO,HYST VEN,HI VEN,LO IEN OTP OTH VFB=0V or VOUT=0V 100 VIN Rising 2 0.21 % 2.15 0.1 1.4 0.4 0.01 1 A o 2.3 V Shutdown, temperature increasing Restore, temperature increasing 160 30 C Note 1: V=IOUT x RDS.ON.HI Rev.A.01 9 AME AME5249 n Detailed Description Main Control Loop The AME5249 utilizes a fixed-frequency,current-mode PWM control scheme combined with fully-integrated power MOSFETs to produce a compact and efficient stepdown DC-DC solution. During normal operation the highside MOSFET turns on each cycle and remains on until the current comparator turns it off. At this point the lowside MOSFET turns on and remains on until either the end of the switching cycle or until the inductor current approaches zero. The error amplifier adjusts the current comparator's threshold according to the load current to ensure that the output voltage remains in regulation. Light Load Power Saving Mode Operation The AME5249 is capable of Power Saving Mode Operation in which the internal power MOSFETs operate intermittently based on load demand. In Power Saving Mode operation, the peak current of the inductor is set to a certain value which increases as the input voltage increases, such as 260mA for 3.6V input voltage and 340mA for 5.5V input voltage, approximately. Each switching event can last from a single cycle at very light loads to few cycles within the active intervals at moderate loads. Between these switching intervals, the unneeded circuitry are turned off, reducing the quiescent current to 20A. In this turned off state, the load current is being supplied solely from the output capacitor. As the output voltage droops, the internal comparator trips and turns on the circuits. This process repeats at a rate depends on the load demand. Dropout Operation As the input supply voltage decreases to a value approaching the output voltage, the duty cycle increases toward the maximum on-time. Further reduction of the supply voltage forces the main switch to remain on for more than one cycle until it reaches 100% duty cycle. The output voltage will then be determined by the input voltage minus the voltage drop across the P-channel MOSFET and the inductor. The AME5249 has an UVP comparator to turn the power device off in case the input voltage or battery voltage is too low. Current Limit Protection The AME5249 has current limiting protection to prevent excessive stress on itself and external components. The internal current limit comparator will disable the power device at a switch peak current limit. Under extreme overloads, such as short-circuit conditions, the AME5249 reduces it's oscillator frequency to around 210KHz to allow further inductor current reduction and to minimize power dissipation. 1.5MHz, 600mA Synchronous Buck Converter Under Voltage Protection Soft Start The AME5249 integrates a soft start function that prevents input inrush current and output overshoot during start-up. During start-up the switch current limit is increased in steps. The start-up time thereby depends on the output capacitor and load current demanded at startup. Typical start-up times with a 10F output capacitor, 3.6V input voltage and 1.5V output voltage, for 600mA load is 700s, and 150s for 1mA load. Thermal Shutdown The device protects itself from overheating with an internal thermal shutdown circuit. If the junction temperature exceeds the thermal shutdown trip point, the device turns off. The part is restarted when the junction temperature drops 30oC below the thermal shutdown trip point. 10 Rev.A.01 AME AME5249 n Application Information The typical AME5249 application circuit is shown in Figure1. The external component selection is driven by the load requirement. Inductor Selection Although the inductor does not influence the operating frequency, the inductor value has a direct effect on ripple current. The inductor ripple current IL decreases with higher inductance and increases with higher VIN or VOUT: Toroid or shielded pot cores in ferrite or permalloy materials are small and don't radiate energy but generally cost more than powdered iron core inductors with similar characteristics. The choice of which style inductor to use mainly depends on the price vs. size requirements and any radiated field/EMI requirements. Input Capacitor Selection In continuous mode, the source current of the main power MOSFET is a square wave of duty cycle V OUT/VIN. To prevent large voltage transients, a low ESR input capacitor sized for the maximum RMS current must be used. The input filter capacitor supplies current to the main power MOSFET of AME5249 in the first half of each cycle and reduces voltage ripple imposed on the input power source. A ceramic capacitor's low ESR provides the best noise filtering of input voltage spikes due to this rapidly changing current. Select a capacitor with sufficient ripple current rating. The input capacitor's maximum RMS capacitor current is given by: 1.5MHz, 600mA Synchronous Buck Converter I L = VIN - VOUT VOUT x L x f SW VIN The inductor must have a saturation (incremental) current rating equal to the peak switch-current limit. For high efficiency, minimize the inductor's DC resistance. The inductor value also has an effect on Power Saving Mode operation. Lower inductor values (higher ripple current) will cause the transition from PWM to Power Saving Mode to occur at lower load currents, which can cause a dip in efficiency in the upper range of low current operation. Inductor Core Selection Once the value for L is known, the type of inductor must be selected. High efficiency converters generally cannot afford the core loss found in low cost powdered iron cores, forcing the use of more expensive ferrite or mollypermalloy cores. Actual core loss is independent of core size for a fixed inductor value but it is very dependent on the inductance selected. As the inductance increases, core losses decrease. Unfortunately, increased inductance requires more turns of wire and therefore copper losses will increase. Ferrite designs have very low core losses and are preferred at high switching frequencies, so design goals can concentrate on copper loss and preventing saturation. Ferrite core material saturates "hard", which means that inductance collapses abruptly when the peak design current is exceeded. This result in an abrupt increase in inductor ripple current and consequent output voltage ripple. Do not allow the core to saturate! Different core materials and shapes will change the size/current and price/current relationship of an inductor. I RMS I MAX (VIN - VOUT )VOUT VIN Where the maximum average output current IMAX equals the peak current ILIM minus half peak-to-peak ripple current, IMAX=ILIM - IL/2. This formula has a maximum at VIN=2V OUT, where IRMS =IOUT/2. This simple worst-case condition is commonly used for design because even significant deviations do not offer much relief. Note that ripple current ratings from capacitor manufacturers are often based on only 2000 hours of life which makes it advisable to further derate the capacitor, or choose a capacitor rated at a higher temperature than required. Several capacitors may also be paralleled to meet size or height requirements in the design. Rev.A.01 11 AME AME5249 Output Capacitor Selection The selection of COUT is driven by the required effective series resistance (ESR). Typically, once the ESR requirement for COUT has been met, the RMS current rating generally far exceeds the IRIPPLE(P-P) requirement. The output ripple VOUT is determined by 1.5MHz, 600mA Synchronous Buck Converter Thermal Considerations In most applications the AME5249 does not dissipate much heat due to its high efficiency. But, in applications where the AME5249 is running at high ambient temperature with low supply voltage and high duty cycles, such as in dropout, the heat dissipated may exceed the maximum junction temperature of the part. If the junction temperat ure reac hes approximat ely 160J , bot h power switches will be turned off and the SW node will become high impedance. To avoid the AME5249 from exceeding the maximum junction temperature, the user will need to do some thermal analysis. The goal of the thermal analysis is to determine whether the power dissipated exceeds the maximum junction temperature of the part. The temperature rise is given by: VOUT I L ( ESR + 1 8COUT f SW ) Where fSW=operating frequency, COUT=output capacitance and IL=ripple current in the inductor. For a fixed output voltage, the output ripple is highest at maximum input voltage since IL increases with input voltage. At the light load current, the device operates in Power Saving Mode, and the output voltage ripple is independent of the value of the output capacitor. The output ripple is set by the internal comparator thresholds and is also affected by the feedback capacitor C1 in figure2. Large capacitor values can decrease the output ripple, usually a 22pF capacitor is sufficient for most applications. When the input and output ceramic capacitors are chosen, choose the X5R or X7R dielectric formulations. These dielectrics have the best temperature and voltage characters have the best temperature and voltage characteristics of all the ceramics for a given value and size. TR = ( PD) x JA Where PD is the power dissipated by the regulator and JA is the thermal resistance from the junction of the die to the ambient temperature. Output Voltage Setting In the adjustable version, the output voltage is set by a resistor divider according to following formula: VOUT = 0.6V x (1 + R2 ) R1 The external resistor divider is connected to the output. 12 Rev.A.01 AME AME5249 n Typical Application V IN 2.5V to 5.5V IN CIN 4.7F SW C1 22pF R1 442K R2 442K COUT 10F CIN 4.7F 1.5MHz, 600mA Synchronous Buck Converter L 4.7H VOUT 1.2V/600mA V IN 3.6V to 5.5V IN SW L 4.7H VOUT 3.3V/600mA R1 887K R2 196K COUT 10F AME5249 EN GND FB AME5249 EN GND FB C1 22pF Figure 4. AME5249 with 1.2V Output Figure 7. AME5249 with 3.3V Output V IN 2.5V to 5.5V IN CIN 4.7F SW L 4.7H VOUT 1.5V/600mA R1 475K R2 316K COUT 10F AME5249 EN GND FB C1 22pF Figure 5. AME5249 with 1.5V Output V IN 2.7V to 5.5V IN CIN 4.7F SW L 4.7H VOUT 2.5V/600mA R1 887K R2 280K COUT 10F AME5249 EN GND FB C1 22pF Figure 6. AME5249 with 2.5V Output Rev.A.01 13 AME AME5249 Efficiency vs Output Current 100 90 80 1.5MHz, 600mA Synchronous Buck Converter Efficiency vs Output Current 100 90 VIN=3.6V VIN=4.2V VIN=2.7V 80 Efficiency(%) Efficiency(%) 70 60 50 40 30 20 10 0.1 70 60 50 40 30 VIN=3.6V VIN=4.2V V IN=2.7V VOUT=2.5V 1 10 100 1000 20 10 0.1 V OUT=1.5V 1 10 100 1000 Output Current(mA) Output Current(mA) Reference Voltage vs Temperature 0.620 0.615 1.70 Oscillator Frequency vs Temperature VIN=3.6V VIN=3.6V Oscillator Frequency(MHz) -15 +10 +35 +60 +85 +110 1.65 1.60 1.55 1.50 1.45 1.40 1.35 1.30 -40 Reference Voltage (V) 0.610 0.605 0.600 0.595 0.590 0.585 0.580 -40 Temperature(oC) -15 +10 +35 +60 +85 +110 Temperature( oC) Oscillator Frequency vs Supply Voltage 1.70 50 45 Quiescent Current vs Input Voltage VIN=3.6V VOUT=1.8V IOUT =0A Oscillator Frequency(MHz) 1.65 Quiescent Current (A) 40 35 30 25 20 15 10 5 0 2.5 1.60 1.55 1.50 1.45 1.40 1.35 1.30 2.5 3.5 V IN (V) 4.5 5.5 3.5 4.5 5.5 V IN(V) 14 Rev.A.01 AME AME5249 Quiescent Current vs Temperature 50 45 1.5MHz, 600mA Synchronous Buck Converter Light Load Mode Quiescent Current (A) 40 35 30 25 20 15 10 5 0 -40 V IN=3.6V V OUT=1.8V IOUT =0A VS W 5V /Div VOUT 100mV/Div AC COUPLED IL 200mA/Div -15 +10 +35 +60 +85 +110 Temperature(oC) VI N=3.6V VOUT=1.8V IOUT=50mA 5S/Div Load Step Load Step VOUT 100mV/Div AC COUPLED IL 500mA/Div V OUT 100mV/Div AC COUPLED IL 500mA/Div IOUT 500mA/Div V IN=3.6V 20S/Div V OUT=1.8V IOUT =0mA to 600mA I OUT 500mA/Div VIN =3.6V 20S/Div VOUT =1.8V IOUT=50mA to 600mA Load Step Load Step V OUT 100mV/Div AC COUPLED VOUT 100mV/Div AC COUPLED IL 500mA/Div IL 500mA/Div I OUT 500mA/Div VI N=3.6V 20S/Div VOUT =1.8V IOUT=100mA to 600mA IOUT 500mA/Div VI N=3.6V 20S/Div VOUT= 1.8V IOUT=200mA to 600mA Rev.A.01 15 AME AME5249 Stead State Test 0 .7 1.5MHz, 600mA Synchronous Buck Converter RDS(ON) vs Temperature VI N=3.6V 0 .6 V IN 200mV/Div AC COUPLED VOUT 20mV/Div IL 100mA/Div VS W 2V /Div AC COUPLED V IN=3.6V V OUT=1.8V IOUT=300mA 1S/Div High-Side Switch 0 .5 R DS (ON) () 0 .4 0 .3 Low-Side Switch 0 .2 0 .1 -40 -15 +10 +35 +60 +85 +110 Temperature(o C) RDS(ON) vs Input Voltage 0.7 Output Voltage vs Output Current 1.87 1.86 0.6 1.85 Output Voltage(V) 0.5 High-Side Switch 1.84 1.83 1.82 1.81 1.80 1.79 1.78 RDS(ON) () 0.4 0.3 Low-Side Switch 0.2 0.1 2.5 1.77 3.5 4.5 5.5 0 100 200 300 400 500 600 Input Voltage(V) Output Current(mA) Start Up From Shutdown 1.9 Current Limit vs VIN 1.8 1.7 Run 2V/Div Current Limit(A) 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 2.5 2.8 3.1 3.4 3.7 4.0 4.3 V OUT 1V/Div IL 500mA/Div VOUT =1.2V 4.6 4.9 5.2 5.5 16 VIN=3.6V VOUT =1.8V IOUT =550mA 100S/Div VIN(V) Rev.A.01 AME AME5249 Current Limit vs Temperature 2.10 2.00 1.90 1.80 1.5MHz, 600mA Synchronous Buck Converter Current Limit(A) 1.70 1.60 1.50 1.40 1.30 1.20 1.10 1.00 0.90 0.80 0.70 -40 -25 -10 +5 +20 VIN=3.3V VIN =3.6V VIN=5.0V VOUT=1.2V +35 +50 +65 +80 +95 +110 +125 Temperature(o C) Rev.A.01 17 AME AME5249 n Date Code Rule Month Code 1: January 7: July 2: February 8: August 3: March 9: September 4: April A: October 5: May B: November 6: June C: December Marking A M A M A M A M A M A M A M A M A M A M Year xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9 1.5MHz, 600mA Synchronous Buck Converter A A A A A A A A A A A A A A A A A A A A X X X X X X X X X X X X X X X X X X X X n Tape and Reel Dimension SOT-25 P W AME PIN 1 AME Carrier Tape, Number of Components Per Reel and Reel Size Package SOT-25 Carrier Width (W) 8.00.1 mm Pitch (P) 4.00.1 mm Part Per Full Reel 3000pcs Reel Size 1801 mm 18 Rev.A.01 AME AME5249 n Tape and Reel Dimension TSOT-25 P 1.5MHz, 600mA Synchronous Buck Converter W AME PIN 1 AME Carrier Tape, Number of Components Per Reel and Reel Size Package TSOT-25 Carrier Width (W) 8.00.1 mm Pitch (P) 4.00.1 mm Part Per Full Reel 3000pcs Reel Size 1801 mm Rev.A.01 19 AME AME5249 n Package Dimension SOT-25 Top View D c1 Side View 1.5MHz, 600mA Synchronous Buck Converter SYMBOLS A A1 MILLIMETERS MIN 0.90 0.00 0.30 2.70 1.40 INCHES MIN 0.0354 0.0000 0.0118 0.1063 0.0551 MAX 1.30 0.15 0.55 3.10 1.80 MAX 0.0512 0.0059 0.0217 0.1220 0.0709 H E b D E L PIN 1 S1 e Front View A e H L 1 S1 0 1.90 BSC 2.60 3.00 0.07480 BSC 0.10236 0.11811 0.0146BSC o 0.37BSC o 10 0 o 10 o 0.95BSC 0.0374BSC b TSOT-25 Top View D c1 Side View A1 SYMBOLS A+A1 b MILLIMETERS MIN 0.90 0.30 2.70 1.40 INCHES MIN 0.0354 0.0118 0.1063 0.0551 MAX 1.25 0.50 3.10 1.80 MAX 0.0492 0.0197 0.1220 0.0709 H E D E e L 1.90 BSC 2.40 3.00 0.07480 BSC 0.0945 0.1181 PIN 1 S1 e Front View A H L 1 S1 0.35BSC 0 o 0.0138BSC o 10 0 o 10 o 0.95BSC 0.0374BSC b 20 A1 Rev.A.01 www.ame.com.tw E-Mail: sales@ame.com.tw Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. (c) AME, Inc. , April 2009 Document: 3005-DS5249-A.01 Corporate Headquarter AME, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 |
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