AAT3687IWP-4.2-2-T1

Lithium-Ion/Polymer Battery Charger General Description The AAT3687 BatteryManager is a highly integrated single-cell lithium-ion/polymer battery charger IC designed to operate with AC adapter inputs. It requires a minimum number of external components. The AAT3687 precisely regulates battery charge voltage and current for 4.2V lithiumion/polymer battery cells. Adapter charge current rates can be programmed up to 1.5A. An active thermal management system regulates the fast charge constant current for all ambient temperature and input vs. output voltage conditions. Battery temperature and charge state are fully monitored for fault conditions. In the event of an over-voltage or over-temperature failure, the device will automatically shut down, thus protecting the charging device, control system, and the battery under charge. Status monitor output pins are provided to indicate the battery charge status by directly driving two external LEDs. A serial interface output is available to report 12 various charging status states to a microcontroller. The AAT3687 is available in a Pb-free, thermallyenhanced, space-saving 12-pin TDFN 3x3mm package and is rated over the -40°C to +85°C temperature range. AAT3687 Features • • • • BatteryManager™ • • • • • • • • • Input Voltage Range: 4.0V to 5.5V Up to 1.5A Charging Current Adapter Present Indicator (ADPP#) High Level of Integration with Internal: — Charging Device — Reverse Blocking Diode — Current Sensing Active Thermal Loop Charge Reduction Automatic Recharge Sequencing Battery Temperature Monitoring Full Battery Charge Auto Turn-Off / Sleep Mode Over-Voltage, Over-Temperature, and Emergency Thermal Protection Power On Reset and Soft Start Serial Interface Status Report 12-Pin 3x3mm TDFN Package -40°C to +85°C Temperature Range Applications • • • • • • Cellular Telephones Digital Still Cameras Hand Held PCs MP3 Players Personal Data Assistants (PDAs) Other Lithium-Ion/Polymer Battery-Powered Devices Typical Application Adapter Present Enable Serial Interface BATT+ ADPP# EN DATA TS BAT COUT 10μF + BATT- AAT3687 CT Adapter CIN 10μF RSET RB1 LED1 RB2 ADP ADPSET STAT1 GND STAT2 CT 0.1μF TEMP Battery Pack LED2 3687.2006.10.1.7 1 Lithium-Ion/Polymer Battery Charger Pin Descriptions Pin # 1 2 3 4 AAT3687 Name BAT ADP GND EN Type Out In Ground In Function Battery charging and sensing. Adapter input. Ground connection. AAT3687: Enable pin. Logic high enables the IC. AAT3687-1, AAT3687-2: Enable pin. Logic high enables the IC. EN tied to internal 4MΩ pull-up resistor to ADP. Adapter present indicator. This pin is open drain until ADP pin reaches threshold. Connect to 10kΩ NTC thermistor. Status report to microcontroller via serial interface: open drain. Battery charge status indicator pin to drive an LED: active low, open drain. Battery charge status indicator pin to drive an LED: active low, open drain. Timing capacitor to adjust internal watchdog timer. Set maximum charge time for adapter powered trickle, CC, and CV charge modes. If timing function is not needed, terminate this pin to ground. No connection. Use resistor at this pin to set adapter charging current. Exposed paddle (bottom); connect to GND directly beneath package. 5 6 7 8 9 10 ADPP# TS DATA STAT2 STAT1 CT Out In/Out Out Out Out In/Out 11 12 EP N/C ADPSET In/Out Pin Configuration TDFN33-12 (Top View) BAT ADP GND EN ADPP# TS 1 2 3 4 5 6 12 11 10 9 8 7 ADPSET N/C CT STAT1 STAT2 DATA 2 3687.2006.10.1.7 Lithium-Ion/Polymer Battery Charger AAT3687 Feature Options Product AAT3687 AAT3687-1 AAT3687-2 AAT3687 Trickle Charge Yes Yes No Internal Pull-Up Resistor on EN Pin No Yes Yes Can Leave TS Pin Open No Yes Yes Absolute Maximum Ratings1 Symbol VP VP VN TJ TLEAD Description ADP Input Voltage, VUVLO Yes Switch No No No Sleep Mode Thermal Loop Power On Reset ADP Loop Enable No Timing Fault Conditions Monitor OV, OT Device Temperature Monitor TJ > 110°C Yes Yes No Battery Temperature Monitor VTS1 < TS < VTS2 Expire Shut Down Yes Thermal Loop Current Reduction No Battery Temperature Charge Safety Timer Yes (AAT3687) No Recharge Test VRCH > VBAT Preconditioning Test VMIN > VBAT Yes Low Current Conditioning Set Yes (AAT3687-2) No Yes Current Phase Test VEOC > VBAT Current Charging Mode No Yes Voltage Phase Test IBAT > ITERM Voltage Charging Mode No Charge Completed Application Information Adapter Power Input Constant current charge levels up to 1.5A may be programmed by the user when powered from a sufficient input power source. The AAT3687 will operate from the adapter input over a 4.0V to 5.5V range. The constant current fast charge current for the adapter input is set by the RSET resistor connected between the ADPSET and ground. Refer to Table 1 for recommended RSET values for a desired constant current charge level. The presence of voltage on the adapter input is indicated by the ADPP# pin function. This indicator pin uses an internal open drain device that will pull the ADPP# pin low when 3687.2006.10.1.7 11 Lithium-Ion/Polymer Battery Charger voltage is detected on the ADP pin. The precise charging function of the AAT3687 may be read from the DATA pin and/or status LEDs. Please refer to the Battery Charge Status Indication discussion for further details on data reporting. Thermal Loop Control Due to the integrated nature of the linear charging control pass device for the adapter input, a special thermal loop control system has been employed to maximize charging current under all operating conditions. The thermal management system measures the internal circuit die temperature and reduces the fast charge current when the device exceeds a preset internal temperature control threshold. Once the thermal loop control becomes active, the fast charge current is initially reduced by a factor of 0.44. The initial thermal loop current can be estimated by the following equation: Eq. 1: AAT3687 Enable / Disable The AAT3687 provides an enable function to control the charger IC on and off. The enable (EN) pin is active high. When pulled to a logic low level, the AAT3687 will be shut down and forced into the sleep state. Charging will be halted regardless of the battery voltage or charging state. When the device is reenabled, the charge control circuit will automatically reset and resume charging functions with the appropriate charging mode based on the battery charge state and measured cell voltage on the BAT pin. Programming Charge Current The fast charge constant current charge level is user programmed with a set resistor placed between the ADPSET pin and ground. The accuracy of the fast charge, as well as the preconditioning trickle charge current, is dominated by the tolerance of the set resistor used. For this reason, a 1% tolerance metal film resistor is recommended for the set resistor function. Fast charge constant current levels from 50mA to 1.5A can be set by selecting the appropriate resistor value from Table 1. ITLOOP = ICC · 0.44 The thermal loop control re-evaluates the circuit die temperature in 330ms intervals and adjusts the fast charge current back up in small steps to the full fast charge current level or until an equilibrium current is discovered and maximized for the given ambient temperature condition. The thermal loop controls the system charge level; therefore, the AAT3687 will always provide the highest level of constant current in the fast charge mode possible for any given ambient temperature condition. Adapter Input Charge Inhibit and Resume The AAT3687 has a UVLO and power on reset feature so that the charger will suspend charging and shut down if the input supply to the adapter pin drops below the UVLO threshold. When power is re-applied to the adapter pin or the UVLO conditions recovers, the system charge control will assess the state of charge on the battery cell and will automatically resume charging in the appropriate mode for the condition of the battery. ICC 50 75 100 200 300 400 500 600 700 ADP RSET (kΩ) N/A N/A 84.5 43.2 28.0 21.0 16.9 13.3 11.5 ICC 800 900 1000 1100 1200 1300 1400 1500 ADP RSET (kΩ) 10.2 9.09 8.06 7.32 6.65 6.04 5.62 5.36 Table 1: Recommended RSET Values. 12 3687.2006.10.1.7 Lithium-Ion/Polymer Battery Charger 10000 AAT3687 IFASTCHARGE (mA) pin to ground. The CT pin should not be left floating or un-terminated, as this will cause errors in the internal timing control circuit. The constant current provided to charge the timing capacitor is very small, and this pin is susceptible to noise and changes in capacitance value. Therefore, the timing capacitor should be physically located on the printed circuit board layout as close as possible to the CT pin. Since the accuracy of the internal timer is dominated by the capacitance value, a 10% tolerance or better ceramic capacitor is recommended. Ceramic capacitor materials, such as X7R and X5R types, are a good choice for this application. Over-Voltage Protection An over-voltage event is defined as a condition where the voltage on the BAT pin exceeds the maximum battery charge voltage and is set by the over-voltage protection threshold (VOVP). If an over-voltage condition occurs, the AAT3687 charge control will shut down the device until the voltage on the BAT pin drops below VOVP. The AAT3687 will resume normal charging operation after the over-voltage condition is removed. During an overvoltage event, the STAT LEDs will report a system fault, and the actual fault condition can be read via the DATA pin signal. Over-Temperature Shutdown The AAT3687 has a thermal protection control circuit which will shut down charging functions should the internal die temperature exceed the preset thermal limit threshold. Battery Temperature Fault Monitoring In the event of a battery over-temperature condition, the charge control will turn off the internal pass device and report a battery temperature fault on the DATA pin function. The STAT LEDs will also display a system fault. After the system recovers from a temperature fault, the device will resume charging operation. The AAT3687 checks battery temperature before starting the charge cycle, as well as during all stages of charging. This is accomplished by monitoring the voltage at the TS pin. This system is intended for use with negative temperature coefficient thermistors (NTC) which are typically integrated into the battery package. Most of the commonly used NTC thermistors in battery packs are 13 1000 100 10 1 10 100 RSET (kΩ) Figure 2: IFASTCHARGE vs. RSET. Protection Circuitry Programmable Watchdog Timer The AAT3687 contains a watchdog timing circuit to shut down charging functions in the event of a defective battery cell not accepting a charge over a preset period of time. Typically, a 0.1μF ceramic capacitor is connected between the CT pin and ground. When a 0.1μF ceramic capacitor is used, the device will time out a shutdown condition if the trickle charge mode exceeds 25 minutes (AAT3687 and AAT3687-1 only) and a combined trickle charge plus fast charge mode of 3 hours. When the device transitions to the constant voltage mode, the timing counter is reset and will time out after an additional 3 hours if the charge current does not drop to the charge termination level. Mode Trickle Charge (TC) Time Out Trickle Charge (TC) + Fast Charge (CC) Time Out Constant Voltage (VC) Mode Time Out Time 25 minutes (AAT3687 (and AAT3687-1 only) 3 hours 3 hours Table 2: Summary for a 0.1μF Ceramic Capacitor Used for the Timing Capacitor. The CT pin is driven by a constant current source and will provide a linear response to increases in the timing capacitor value. Thus, if the timing capacitor were to be doubled from the nominal 0.1μF value, the time-out periods would be doubled. If the programmable watchdog timer function is not needed, it can be disabled by terminating the CT 3687.2006.10.1.7 Lithium-Ion/Polymer Battery Charger approximately 10kΩ at room temperature (25°C). The TS pin has been specifically designed to source 80μA of current to the thermistor. The voltage on the TS pin resulting from the resistive load should stay within a window of 335mV to 2.32V. If the battery becomes too hot during charging due to an internal fault or excessive fast charge current, the thermistor will heat up and reduce in value, pulling the TS pin voltage lower than the TS1 threshold, and the AAT3687 will signal the fault condition. If the use of the TS pin function is not required by the system, it should be terminated to ground using a 10kΩ resistor. Alternatively, on the AAT3687-1 and AAT3687-2, the TS pin may be left open. simply wants to have a single lamp to show "charging" or "not charging." This can be accomplished by using the STAT1 pin and a single LED. Using two LEDs and both STAT pins simply gives the user more information to the charging states. Refer to Table 3 for LED display definitions. The LED anodes should be connected to VADP. The LEDs should be biased with as little current as necessary to create reasonable illumination; therefore, a ballast resistor should be placed between the LED cathodes and the STAT1/2 pins. LED current consumption will add to the overall thermal power budget for the device package, hence it is good to keep the LED drive current to a minimum. 2mA should be sufficient to drive most low-cost green or red LEDs. It is not recommended to exceed 8mA for driving an individual status LED. The required ballast resistor values can be estimated using the following formulas: AAT3687 Battery Charge Status Indication The AAT3687 indicates the status of the battery under charge with two different systems. First, the device has two status LED driver outputs. These two LEDs can indicate simple functions such as no battery charge activity, battery charging, charge complete, and charge fault. The AAT3687 also provides a bi-directional data reporting function so that a system microcontroller can interrogate the DATA pin and read any one of 12 system states. Status Indicator Display Simple system charging status states can be displayed using one or two LEDs in conjunction with the STAT1 and STAT2 pins on the AAT3687. These two pins are simple open drain switches used to connect the LED cathodes to ground. It is not necessary to use both display LEDs if a user Eq. 2: RB(STAT1/2) = Example: Eq. 3: RB(STAT1) = (VADP - VF(LED)) ILED(STAT1/2) (5.5V - 2.0V) = 1.75kΩ 2mA Note: Red LED forward voltage (VF) is typically 2.0V @ 2mA Event Description Charge Disabled or Low Supply Charge Enabled Without Battery Battery Charging Charge Completed Fault STAT1 Off Flash1 On Off On STAT2 Off Flash1 Off On On Table 3: LED Status Indicator. 1. Flashing rate depends on output capacitance. 14 3687.2006.10.1.7 Lithium-Ion/Polymer Battery Charger Digital Charge Status Reporting The AAT3687 has a comprehensive digital data reporting system by use of the DATA pin feature. This function can provide detailed information regarding the status of the charging system. The DATA pin is a bi-directional port which will read back a series of data pulses when the system microcontroller asserts a request pulse. This single strobe request protocol will invoke one of 12 possible return pulse counts that the system microcontroller can look up based on the serial report data listed in Table 4. The DATA pin function logic is active low and should normally be pulled high to VADP. This data line can also be pulled high to the same level as the high state for the logic I/O port on the system microcontroller. In order for the DATA pin control circuit to generate clean, sharp edges for the data output, and to maintain the integrity of the data timing for the system, the pull-up resistor on the data line should be low enough in value so that the DATA signal returns to the high state without delay. If the pull-up resistor is too high, the strobe pulse from the system microcontroller could exceed the maximum pulse time and the DATA output control could issue false status reports. A 1.5kΩ resistor is recommended when pulling the DATA pin high to 5.0V on the VADP input. If the data line is pulled high to a voltage level less than 5.0V, the pull-up resistor can be calculated based on a recommended minimum pull-up current of 3mA. Use the following formula: AAT3687 Eq. 4: RPULL-UP ≤ VPULL-UP 3mA 1.8V to 5.0V IN AAT3687 Status Control OUT RPULL_UP DATA Pin GPIO IN OUT μP GPIO Port Figure 3: Data Pin Application Circuit. Data Timing The system microcontroller should assert an active low data request pulse for minimum duration of 200ns; this is specified by TLO(DATA). Upon sensing the rising edge of the end of the data request pulse, the AAT3687 status data control will reply the data word back to the system microcontroller after a delay specified by the data report time specification TDATA(RPT). The period of the following group of data pulses will be specified by TDATA. 3687.2006.10.1.7 15 Lithium-Ion/Polymer Battery Charger Timing Diagram SQPULSE System Reset System Start PDATA AAT3687 SQ CK TSYNC TLAT TOFF Data TDATA(RPT) = TSYNC + TLAT < 2.5 PDATA TOFF > 2 PDATA N=1 N=2 N=3 N 1 2 3 4 5 6 7 8 9 10 11 12 23 DATA Report Status Chip Over-Temperature Shutdown. Battery Temperature Fault. Over-Voltage Turn Off. Not Used. ADP Watchdog Time-Out in Battery Condition Mode. ADP Battery Condition Mode. ADP Watchdog Time-Out in Constant Current Mode. ADP Thermal Loop Regulation in Constant Current Mode. ADP Constant Current Mode. ADP Watchdog Time-Out in Constant Voltage Mode. ADP Constant Voltage Mode. ADP End of Charging. Data Report Error. Table 4: Serial Data Report Table. 16 3687.2006.10.1.7 Lithium-Ion/Polymer Battery Charger Thermal Considerations The AAT3687 is offered in a 3x3mm TDFN package which can provide up to 2.0W of power dissipation when it is properly bonded to a printed circuit board and has a maximum thermal resistance of 50°C/W. Many considerations should be taken into account when designing the printed circuit board layout, as well as the placement of the charger IC package in proximity to other heat generating devices in a given application design. The ambient temperature around the charger IC will also have an effect on the thermal limits of a battery charging application. The maximum limits that can be expected for a given ambient condition can be estimated by the following discussion. First, the maximum power dissipation for a given situation should be calculated: Eq. 5: PD = [(VIN - VBAT) · ICC + (VIN · IOP)] Where: TA = Ambient Temperature in °C TJ = Maximum Device Junction Temperature Below the Thermal Loop Threshold PD = Total Power Dissipation by the Device θJA = Package Thermal Resistance in °C/W Example: For an application where the fast charge current for the adapter mode is set to 1A, VADP = 5.0V and the battery voltage at 3.6V, what is the maximum ambient temperature at which the thermal loop will become active? Given: VADP = 5.0V VBAT = 3.6V ICC IOP Where: PD = Total Power Dissipation by the Device VIN = Input Voltage Amplitude, VADP VBAT = Battery Voltage as Seen at the BAT Pin ICC IOP = Maximum Constant Fast Charge Current Programmed for the Application = Quiescent Current Consumed by the Charger IC for Normal Operation TJ = 1A = 0.75mA = 110°C AAT3687 θJA = 50°C/W Using Equation 5, calculate the device power dissipation for the stated condition: Eq. 7: PD = (5.0V - 3.6V)(1A) + (5.0V · 0.75mA) = 1.40375W The maximum ambient temperature before the AAT3687 thermal loop becomes active can now be calculated using Equation 6: Eq. 8: TA = 110°C - (50°C/W · 1.40375W) Next, the maximum operating ambient temperature for a given application can be estimated based on the thermal resistance of the 3x3mm TDFN package when sufficiently mounted to a PCB layout and the internal thermal loop temperature threshold. Eq. 6: TA = TJ - (θJA · PD) = 39.8125°C Therefore, under the stated conditions for this worst case power dissipation example, the AAT3687 will enter the thermal loop and lower the fast charge constant current when the ambient operating temperature rises above 39.8°C. 3687.2006.10.1.7 17 Lithium-Ion/Polymer Battery Charger Capacitor Selection Input Capacitor In general, it is good design practice to place a decoupling capacitor between the ADP pin and ground. An input capacitor in the range of 1μF to 22μF is recommended. If the source supply is unregulated, it may be necessary to increase the capacitance to keep the input voltage above the under-voltage lockout threshold during device enable and when battery charging is initiated. If the AAT3687 adapter input is to be used in a system with an external power supply source, such as a typical AC-to-DC wall adapter, then a CIN capacitor in the range of 10μF should be used. A larger input capacitor in this application will minimize switching or power transient effects when the power supply is "hot plugged" in. Output Capacitor The AAT3687 only requires a 1μF ceramic capacitor on the BAT pin to maintain circuit stability. This value should be increased to 10μF or more if the battery connection is made any distance from the charger output. If the AAT3687 is to be used in applications where the battery can be removed from the charger, such as with desktop charging cradles, an output capacitor greater than 10μF may be required to prevent the device from cycling on and off when no battery is present. AAT3687 Printed Circuit Board Layout Considerations For the best results, it is recommended to physically place the battery pack as close as possible to the AAT3687 BAT pin. To minimize voltage drops on the PCB, keep the high current carrying traces adequately wide. For maximum power dissipation of the AAT3687 3x3mm TDFN package, the metal substrate should be solder bonded to the board. It is also recommended to maximize the substrate contact to the PCB ground plane layer to further increase local heat dissipation. Refer to the AAT3687 evaluation board for a good layout example (see Figures 4 and 5). AAT3687 Evaluation Board Layout Figure 4: AAT3687 Evaluation Board Component Side Layout. Figure 5: AAT3687 Evaluation Board Solder Side Layout. 18 3687.2006.10.1.7 Lithium-Ion/Polymer Battery Charger AAT3687 Evaluation Board Schematic Diagram TermB2 1 ADP 2 GNDTermB2 AAT3687 C1 10μF J1 ON/OFF 123 RED GRN RED LED D3 LED D2 LED D1 R3 1.5kΩ R4 1.5kΩ R5 1.5kΩ R7 1.5kΩ R1 0Ω 4 2 U1 (TDFN33-12) EN ADP BAT ADPP# STAT2 STAT1 DATA 5 8 9 7 TermB3 BAT TS GND 1 3 2 1 DATA AAT3687 6 TS GND 3 C2 10μF R2 10kΩ ADPSET CT 10 12 R6 8.06kΩ C3 0.1μF SW1 CT 3687.2006.10.1.7 19 Lithium-Ion/Polymer Battery Charger AAT3687 Evaluation Board Bill of Materials (BOM) Quantity Description 1 1 1 2 1 2 1 1 1 1 4 1 1 Test Pin Connecting Terminal Block, 2.54mm, 2 Position Connecting Terminal Block, 2.54mm, 3 Position Capacitor, Ceramic, 10μF 6.3V 10% X5R 0805 Capacitor, Ceramic, 1μF 10% 25V X5R 0603 Typical Red LED, Ultra-Bright Typical Green LED Header, 3-Pin Resistor, 10kΩ, 1/16W 5% 0603 SMD Resistor, 8.06kΩ, 1/16W 1% 0603 SMD Resistor, 1.5kΩ, 1/16W 5% 0603 SMD Switch Tact 6mm SPST H = 5.0mm AAT3687 Lithium-Ion/Polymer Battery Charge Controller AAT3687 Desig. DATA ADP, GND BAT, GND, TS C1, C2 C3 D1, D3 D2 J1 R2 R6 R3, R4, R5, R7 SW1 U1 Footprint PAD TBLOK2 TBLOK3 0805 0603 1206LED Manufacturer Mill-Max Phoenix Contact Phoenix Contact Murata Murata Part Number 6821-0-0001-00-00-08-0 277-1274-ND 277-1273-ND 490-1717-1-ND 478-1244-2-ND CMD15-21SRC/TR8 CMD15-21VGC/TR8 6821-0-0001-00-00-08-0 P10KCFCT-ND P8.06KHCT-ND P1.5KCGCT-ND CKN9012-ND AAT3687IWP-4.2 Chicago Miniature Lamp 1206LED Chicago Miniature Lamp HEADER2MM-3 Sullins 0603 Panasonic/ECG 0603 0603 Switch TDFN33-12 Panasonic/ECG Panasonic/ECG ITT Industries/ C&K Div AnalogicTech 20 3687.2006.10.1.7 Lithium-Ion/Polymer Battery Charger Ordering Information Trickle Charge Yes Yes No AAT3687 Package TDFN33-12 TDFN33-12 TDFN33-12 Marking1 PIXYY TQXYY RTXYY Part Number (Tape and Reel)2 AAT3687IWP-4.2-T1 AAT3687IWP-4.2-1-T1 AAT3687IWP-4.2-2-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 Index Area (D/2 x E/2) Detail "B" 3.00 ± 0.05 2.40 ± 0.05 0.3 ± 0.10 0.16 0.375 ± 0.125 0.075 ± 0.075 0.1 REF Top View Bottom View Pin 1 Indicator (optional) 7.5° ± 7.5° + 0.05 0.8 -0.20 0.229 ± 0.051 0.05 ± 0.05 Option A: C0.30 (4x) max Chamfered corner Option B: R0.30 (4x) max Round corner Detail "B" Side View Detail "A" All dimensions in millimeters. 1. XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 3687.2006.10.1.7 0.23 ± 0.05 0.45 ± 0.05 Detail "A" 3.00 ± 0.05 1.70 ± 0.05 21 Lithium-Ion/Polymer Battery Charger AAT3687 © Advanced Analogic Technologies, Inc. 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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 22 3687.2006.10.1.7