AOZ1320 Load Switch with Controlled Slew Rate General Description Features The AOZ1320 is a P-channel high-side load switch with controlled slew rate. Three slew rate options are available. The AOZ1320-01 and AOZ1320-04 have a slew rate of 1ms, and the AOZ1320-07 has a slew rate of 4.5ms. The AOZ1320-02 and AOZ1320-05 feature fast Slew Rate (less than 500ns). The slew rate of AOZ1320-03 and AOZ1320-06 is 100µs. The AOZ1320-03, AOZ1320-04, AOZ1320-05, and AOZ1320-07 provide an output discharge circuit to quickly discharge the output when the switch is disabled. ● The P-channel MOSFET has typical on resistance of 75mΩ. The very low RDS(ON) significantly reduces the power path dissipation. The input voltage range of AOZ1320 is from 1.8V to 5.5V. The control input is compatible with both TTL and CMOS logic. Ultra low quiescent current makes this product suitable for any portable applications. The AOZ1320 is available in a 6-pin SOT23 or 8-pin 2mm X 2mm DFN package and is rated over the -40°C to +85°C ambient temperature range. ● ● ● ● ● ● ● ● 1.8V to 5.5V Input Voltage Range Input Under-Voltage Lockout Low RDS(ON) (75mΩ Typical at 5V) Controlled Turn-On Slew Rate – 1ms (AOZ1320-01, -04) – 0.5µs (AOZ1320-02, -05) – 100µs (AOZ1320-03, -06) – 4.5ms (AOZ1320-07) Output Discharge Function (-03, -04, -05) Low Quiescent Current (1.2µA typical) Low Shutdown Current (<1µA) 4.5kV ESD Rating Tiny SOT23 or 2mm x 2mm DFN Package Applications ● ● ● ● ● ● Cellular Phones MP3 Players Personal Media Players Notebook Computers Digital Still Cameras Hot-Swap Applications Typical Application VIN VOUT OUT IN C2 1µF OFF ON AOZ1320 C1 0.1µF EN GND Rev. 1.6 August 2008 www.aosmd.com Page 1 of 18 AOZ1320 Ordering Information Part Number Slew Rate Output Discharge Package Environmental 1ms No SOT23-6 RoHS Compliant AOZ1320CI-01* AOZ1320CI-02 0.5µs No SOT23-6 RoHS Compliant AOZ1320CI-03* 100µs Yes SOT23-6 RoHS Compliant AOZ1320CI-04 1ms Yes SOT23-6 RoHS Compliant AOZ1320CI-05 0.5µs Yes SOT23-6 RoHS Compliant AOZ1320CI-06* 100µs No SOT23-6 RoHS Compliant AOZ1320CI-07 4.5ms Yes SOT23-6 RoHS Compliant AOZ1320DI-01 1ms No 2x2 DFN-8 RoHS Compliant AOZ1320DI-02 0.5µs No 2x2 DFN-8 RoHS Compliant AOZ1320DI-03 100µs Yes 2x2 DFN-8 RoHS Compliant AOZ1320DI-04 1ms Yes 2x2 DFN-8 RoHS Compliant AOZ1320DI-05 0.5µs Yes 2x2 DFN-8 RoHS Compliant AOZ1320DI-06 100µs No 2x2 DFN-8 RoHS Compliant * Contact manufacturer for availability. • All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards. • Parts marked as Green Products (with “L” suffix) use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/web/quality/rohs_compliant.jsp for additional information. Pin Configuration OUT 1 6 IN GND 2 5 GND EN 3 4 NC NC OUT EN GND 1 8 2 7 3 6 4 5 IN IN IN NC SOT23-6 2mm x 2mm DFN-8 (Top View) (Top View) Pin Description Pin Number DFN-8 SOT23-6 Pin Function 6, 7, 8 6 Input. IN is the drain of the P-channel MOSFET. It is the supply input of the IC. GND 4 2, 5 OUT 2 1 Output. OUT is the source of the P-channel MOSFET. EN 3 3 Enable. The P-channel MOSFET turns on when EN is logic HIGH. NC 1, 5 4 No Connect. This pin is not internally connected. Pin Name IN Rev. 1.6 August 2008 Ground. www.aosmd.com Page 2 of 18 AOZ1320 Absolute Maximum Ratings Recommend Operating Ratings Exceeding the Absolute Maximum ratings may damage the device. The device is not guaranteed to operate beyond the Maximum Operating Ratings. Parameter Rating Parameter Rating IN to GND -0.3V to 6V EN to GND -0.3V to 6V Operating Junction Temperature (TJ) -40°C to +150°C OUT to GND -0.3V to VIN + 0.3V Maximum Continuous Switch Current SOT23-6 2x2 DFN-8 1.6A 2.3A Power Dissipation SOT23-6 2x2 DFN-8 0.65W 1.54W Maximum Pulsed Current (VIN > 2.5V) 6A Maximum Pulsed Current (VIN < 2.5V) 3A Package Thermal Resistance SOT23-6 (ΘJA) 2x2 DFN-8 (ΘJA) 191°C/W 81°C/W Storage Temperature (TS) -65°C to +150°C ESD Rating(1) 4.5kV Note: 1. Devices are inherently ESD sensitive, handling precautions are required. Human body model is a 100pF capacitor discharging through a 1.5kΩ resistor. Rev. 1.6 August 2008 www.aosmd.com Page 3 of 18 AOZ1320 Electrical Characteristics TA = 25°C, VIN = VEN = 5V, unless otherwise specified. Specifications in BOLD indicate an ambient temperature range of -40°C to +85°C. Symbol VIN VUVLO Parameter Conditions Operating Voltage Range Under-Voltage Lockout Threshold VIN Falling VIN Rising IIN Input Quiescent Current EN = 5.0V EN = GND IOUT(OFF) Switch Leakage Current VEN < VIL(max), VOUT = 0V RDS(ON) Switch On-Resistance VIN = 5.0V VIN = 4.2V VIN = 3.0V VIN = 1.8V VIL Enable Input-Low Voltage VIH Enable Input-High Voltage VIN = 1.8V to 2.0V VIN = 2.0V to 4.2V VIN = 4.2V to 5.5V IEN Enable Input Leakage Current VEN = 5.5V Min. Typ. Max. Units 1.8 5 5.5 V 0.7 1.0 0.9 1.2 1.3 1.6 V 1.2 4 1 µA 1 µA 100 105 110 150 mΩ 0.8 V 75 78 81 109 V 1.8 2.0 2.4 1 µA AOZ1320-01, -04 TD(ON) TR TD(OFF) Output Turn-on delay RL = 10Ω, See Figure 1 200 300 µs Output Rise-time RL = 10Ω, See Figure 1 1000 1500 µs Output Turn-off delay RL = 10Ω, See Figure 1 20 30 µs Output Turn-On Delay RL = 10Ω, See Figure 1 2 4 µs Output Rise-Time RL = 10Ω, See Figure 1 0.5 1 µs Output Turn-Off Delay RL = 10Ω, See Figure 1 20 30 µs Output Turn-On Delay RL = 10Ω, See Figure 1 20 130 µs Output Rise Time RL = 10Ω, See Figure 1 100 150 µs Output Turn-Off Delay RL = 10Ω, See Figure 1 20 30 µs Output Turn-On Delay RL = 10Ω, See Figure 1 450 850 µs Output Rise Time RL = 10Ω, See Figure 1 4500 7500 µs Output Turn-Off Delay RL = 10Ω, See Figure 1 20 30 µs VEN < VIL(max) 180 250 Ω AOZ1320-02, -05 TD(ON) TR TD(OFF) AOZ1320-03, -06 TD(ON) TR TD(OFF) AOZ1320-07 TD(ON) TR TD(OFF) AOZ1320-03, -04, -05, -07 RDIS Output Pull-Down Resistance in Shutdown Rev. 1.6 August 2008 www.aosmd.com Page 4 of 18 AOZ1320 Typical Performance Characteristics Quiescent Current vs. Temperature Quiescent Current vs. Input Voltage 1.6 Quiescent Current (µA) Quiescent Current (µA) 2.00 1.60 VIN = 5V 1.20 VIN = 3V 0.80 0.40 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.00 -40 0 -20 0 20 40 60 80 100 0 1 2 Temperature (°C) RDS(ON) vs. Input Voltage 6 100 1A RDS(ON) (mΩ) RDS(ON) (mΩ) 1.6A 500mA 120 100mA 90 VIN = 3V 80 60 1.5 VIN = 5V 70 60 80 2.0 2.5 3.0 3.5 4.0 4.5 5.0 50 -40 5.5 -20 0 Input Voltage (V) 0.30 1.80 0.25 IOFF-SW (µA) 1.60 1.40 VIH 1.20 VIL 60 80 100 0.20 0.15 0.10 0.05 0.80 0.60 1.5 40 OFF-Switch Current vs. Temperature 2.00 1.00 20 Temperature (°C) ON/OFF Threshold vs. Input Voltage ON/OFF Threshold (V) 5 110 140 100 4 RDS(ON) vs. Temperature 180 160 3 Input Voltage (V) 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Input Voltage (V) Rev. 1.6 August 2008 0 -40 -20 0 20 40 60 80 100 Temperature (°C) www.aosmd.com Page 5 of 18 AOZ1320 Typical Characteristics AOZ1320-01, AOZ1320-04 Turn-On (VIN = 3V, R = 6Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) Turn-On (VIN = 5V, R = 10Ω) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) Turn-Off (VIN = 3V, R = 6Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) Rev. 1.6 August 2008 CH2: VOUT (2V/div) Time: 50µS/div Turn-Off (VIN = 5V, R = 10Ω) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) www.aosmd.com CH2: VOUT (2V/div) Time: 50µS/div Page 6 of 18 AOZ1320 Typical Characteristics (Continued) AOZ1320-02, AOZ1320-05 Turn-On (VIN = 3V, R = 6Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) Turn-On (VIN = 5V, R = 10Ω) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) Turn-Off (VIN = 3V, R = 6Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) Rev. 1.6 August 2008 CH2: VOUT (2V/div) Time: 50µS/div Turn-Off (VIN = 5V, R = 10Ω) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) www.aosmd.com CH2: VOUT (2V/div) Time: 50µS/div Page 7 of 18 AOZ1320 Typical Characteristics (Continued) AOZ1320-03, AOZ1320-06 Turn-On (VIN = 3V, R = 6Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) Turn-On (VIN = 5V, R = 10Ω) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) Turn-Off (VIN = 3V, R = 6Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) Rev. 1.6 August 2008 CH2: VOUT (2V/div) Time: 50µS/div Turn-Off (VIN = 5V, R = 10Ω) CH2: VOUT (2V/div) Time: 50µS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) www.aosmd.com CH2: VOUT (2V/div) Time: 50µS/div Page 8 of 18 AOZ1320 Typical Characteristics (Continued) AOZ1320-07 Turn-On (VIN = 3V, R = 6Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) Turn-On (VIN = 5V, R = 10Ω) CH2: VOUT (2V/div) Time: 4mS/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) Turn-Off (VIN = 3V, R = 6Ω) CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 4mS/div Turn-Off (VIN = 5V, R = 10Ω) CH2: VOUT (2V/div) Time: 4ms/div CH1: On/Off (5V/div) CH3: IIN (200mA/div) CH2: VOUT (2V/div) Time: 4mS/div AOZ1320-03, AOZ1320-04, AOZ1320-05, AOZ1320-07 Turn-Off Output Discharge (VIN = VEN = 5V, VOUT = 5V, COUT = 4.7µF, TA = 25°C) CH1: VEN (2V/div) Time: 400µs/div Rev. 1.6 August 2008 CH2: VOUT (2V/div) www.aosmd.com Page 9 of 18 AOZ1320 Timing Diagram VIH EN VIL 90% 90% 10% OUT TD(ON) TD(OFF) TR Figure 1. AOZ1320 Timing Diagram Functional Block Diagram IN OUT UVLO Comparator Gate Driver & Slew Rate Control 0.9V 180Ω AOZ1320 -3, -4, -5 + – EN GND Figure 2. Functional Block Diagram Rev. 1.6 August 2008 www.aosmd.com Page 10 of 18 AOZ1320 Detailed Description Slew Rate Control The AOZ1320 is a family of P-channel high-side load switches with controlled slew rate. The device is enabled when the input voltage is above the Under-Voltage Lockout (UVLO) threshold and the EN pin is high. Once enabled, the gate driver and slew-rate control circuitry immediately raises the source-to-gate voltage of the P-channel MOSFET to its threshold level, and then gradually turns on the MOSFET by linearly increases the source-to-gate voltage. This slow turn-on action effectively limits the input inrush current and provides a nice ramp for the output voltage. After the MOSFET is fully enhanced, the AOZ1320 quickly increases the source-to-gate voltage to the full input voltage to minimize on resistance and reduce power dissipation. Three slew-rate options are available. AOZ1320-01 and -04 have a slew rate of 1ms, and the AOZ1320-07 has a slew rate of 4.5ms. This option significantly reduces the inrush current when the MOSFET turns on, allowing the use of very small input capacitor. AOZ1320-02 and -05 have no slew rate control and the MOSFET can be turned on within 500ns. This option is suitable for applications that require very fast switching. AOZ1320-03 and -06 have a moderate slew rate to 100µs. The AOZ1320-03, -04, -05, and -07 options include an internal output discharge circuit that quickly discharges the output to ground when the device is disabled. Input Under-Voltage Lockout The operating voltage range of AOZ1320 is from 1.8V to 5.5V. An internal UVLO comparator monitors the input voltage. The device is disabled if the input voltage falls below the UVLO threshold (0.9V typical). The UVLO comparator has about 300mV hysteresis. On/Off Control The AOZ1320 is enabled when the input voltage is above the UVLO threshold and the EN pin is asserted high. The device is disabled when the input voltage is below the UVLO threshold or the EN pin is asserted low. The EN input is compatible with both TTL and CMOS logic. Internal Discharge Resistor The AOZ1320 has an internal 180Ω resistor to discharge any remaining voltage from the system to the ground that is store in a capacitive load. This provides a safe shutdown of the system to prevent any damages to the devices. This function is controlled from the Enable pin. Applications Information Input Capacitor Selection Use a 1µF or larger capacitor for input bypassing. Place the capacitor close to the IN pins of AOZ1320. Output Capacitor Selection Use a 0.1µF or larger capacitor between OUT and GND. The capacitance does not affect the turn-on slew rate. However, a larger capacitor makes the initial turn-on transient smoother. Thermal Considerations To ensure proper operation, the maximum junction temperature (TJ(MAX)) of AOZ1320 should not exceed 150°C. Several factors attribute to the junction temperature rise: load current, MOSFET on resistance (RDS(ON)), onresistance temperature coefficient (TC), junction-to-ambient thermal resistance (ΘJA), and ambient temperature (TA). Use the following equation to determine the maximum continuous load current ILOAD(MAX): I LOAD ( MAX ) = T J ( MAX ) – T A -------------------------------------------------------------------------------------------------------------------Θ JA • R DS ( ON ) • [ 1 + T C • ( T J ( MAX ) – T A ) ] Rev. 1.6 August 2008 where RDS(ON) is the maximum value of the MOSFET on resistance at 25°C. Please note the maximum load current should not exceed the absolute maximum current rating of the switch. For the SOT-23 package, the absolute maximum current rating is 1.6A. For the 2x2 DFN package, the absolute maximum current rating is 2.3A. For example, when VIN = 5V, the maximum continuous load current of SOT-23 package at room temperature is: I LOAD ( MAX ) = 150°C – 25°C ---------------------------------------------------------------------------------------------------------------------------------------------- = 2.78A 120°C ⁄ W • 100mΩ • [ 1 + 0.0028 • ( 150°C – 25°C ) ] Since the calculated current is greater than the absolute maximum current rating, the maximum load current at VIN = 5V and room temperature is 1.6A. Exceeding the maximum continuous load current may cause damage to the device. Figure 3 and Figure 4 show the maximum load current as a function of the ambient temperature for SOT23 and 2x2 DFN packages respectively. To ensure proper operation, the load current should not exceed the limits in these two figures. www.aosmd.com Page 11 of 18 2.5 2.0 VIN = 5V 1.5 VIN = 3V 1.0 0.5 0 0 20 40 60 80 100 Maximum Load Current (IO) Maximum Load Current (IO) AOZ1320 2.5 VIN = 5V 2.0 VIN = 3V 1.5 1.0 0.5 0 Ambient Temperature (°C) 0 20 40 60 80 100 Ambient Temperature (°C) Figure 3. Maximum Load Current Thermal Derating for SOT23 Package Figure 4. Maximum Load Current Thermal Derating for 2x2 DFN Package Layout Guidelines Good PCB is important for improving the thermal performance of AOZ1320. Place the input and output bypass capacitors close to the IN and OUT pins. The input and output PCB traces should be as wide as possible for the given PCB space. Use a ground plane to enhance the power dissipation capability of the device. The AOZ1320 evaluation board can be used as a layout example. The PCB layout of AOZ1320 evaluation board is shown in Figure 5 and 6. Figure 5. AOZ1320 (SOT23-6) PCB Layout Rev. 1.6 August 2008 www.aosmd.com Page 12 of 18 AOZ1320 Figure 6. AOZ1320 (DFN2X2) PCB Layout Rev. 1.6 August 2008 www.aosmd.com Page 13 of 18 AOZ1320 Package Dimensions, SOT23-6 LP Gauge Plane D Seating Plane L2 e1 c 6 L E E1 1 θ e b A2 A aaa A1 Dimensions in millimeters RECOMMENDED LAND PATTERN 2.40 0.80 0.95 0.63 UNIT: mm Dimensions in inches Symbols A A1 A2 Min. — 0.00 0.70 Nom. — — 0.88 Max. 1.00 0.10 0.95 Symbols A A1 A2 Min. — 0.00 0.028 Nom. — — 0.035 Max. 0.039 0.004 0.037 b c D E E1 0.35 0.10 2.80 2.60 1.50 0.40 0.13 2.90 2.80 1.60 0.50 0.20 3.00 3.00 1.70 b c D E E1 0.014 0.004 0.110 0.102 0.059 0.016 0.005 0.114 0.110 0.063 0.020 0.008 0.118 0.118 0.067 e e1 L L2 aaa 0.95 BSC 1.90 BSC 0.30 0.40 0.60 0.25 BSC 0.10 e e1 L L2 aaa 0.037 BSC 0.075 BSC 0.012 0.016 0.024 0.010 BSC 0.004 θ 0° — 8° θ 0° — 8° Notes: 1. Package body sizes exclude mold flash and gate burrs. Mold flash at the non-lead sides should be less than 5 mils each. 2. Dimension “L” is measured in gauge plane. 3. Tolerance ±0.100mm (4 mil) unless otherwise specified. 4. Refer to JEDEC MO-193C AB. 6. Controlling dimension is millimeter. Converted inch dimensions are not necessarily exact. Rev. 1.6 August 2008 www.aosmd.com Page 14 of 18 AOZ1320 Tape and Reel Dimensions, SOT23-6 Tape P2 P1 D1 D0 E1 K0 E2 E B0 A0 P0 T Feeding Direction UNIT: mm Package A0 B0 K0 SOT-23 5 & 6L LP 3.15 ±0.10 3.20 ±0.10 1.40 ±0.10 D0 D1 1.00 1.50 ±0.05 +0.10/-0.00 Reel E E1 E2 P0 P1 P2 T 8.00 ±0.30 1.75 ±0.10 3.50 ±0.05 4.00 ±0.10 4.00 ±0.10 2.00 ±0.05 0.23 ±0.03 W1 S K R M N J H UNIT: mm Tape Size Reel Size M N 8mm ø177.8 ø177.8 Max. 55.0 Min. W1 H 8.4 13.0 +1.50 / -0.0 +0.5 / -0.2 S K R J 1.5 Min 10.1 Min. 12.7 4.0 ±0.1 Leader/Trailer and Orientation Trailer Tape 300mm min. Rev. 1.6 August 2008 Components Tape Orientation in Pocket www.aosmd.com Leader Tape 500mm min. Page 15 of 18 AOZ1320 Package Dimensions, DFN 2x2 8L b D E R E1 E L D1 TOP VIEW A c BOTTOM VIEW A1 Seating Plane SIDE VIEW Dimensions in millimeters RECOMMENDED LAND PATTERN 0.50 0.25 0.90 0.30 1.50 UNIT: mm 1.70 Symbols A A1 b c D D1 E E1 e Min. 0.70 0.00 0.18 0.15 Nom. 0.75 0.02 0.25 0.20 2.00 BSC 1.35 1.50 2.00 BSC 0.75 0.90 0.50 BSC Max. 0.80 0.05 0.30 0.25 L R 0.20 0.40 0.30 0.20 1.60 1.00 Dimensions in inches Symbols A A1 b c D D1 E E1 e Min. 0.028 0.000 0.007 0.006 Nom. Max. 0.030 0.031 0.001 0.002 0.010 0.012 0.008 0.010 0.079 BSC 0.053 0.059 0.063 0.079 BSC 0.030 0.035 0.039 0.020 BSC L R 0.008 0.012 0.008 aaa bbb 0.15 0.10 aaa bbb 0.006 0.004 ccc ddd 0.10 0.08 ccc ddd 0.004 0.003 0.016 Notes: 1. Dimensions and tolerances conform to ASME Y14.5M-1994. 2. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact. 3. Dimension b applied to metallized terminal and is measured between 0.10mm and 0.30mm from the terminal tip. If the terminal has the optional radius on the other end of the terminal, dimension b should not be measured in that radius area. 4. Coplanarity ddd applies to the terminals and all other bottom surface metallization. Rev. 1.6 August 2008 www.aosmd.com Page 16 of 18 AOZ1320 Tape and Reel Dimensions, DFN 2 x 2 Carrier Tape P2 P1 D0 D1 E1 K0 E2 E B0 T A0 P0 Feeding Direction UNIT: mm Package A0 B0 DFN 2x2 2.25 ±0.05 2.25 ±0.05 K0 D0 D1 E E1 1.00 1.50 1.00 8.00 1.75 ±0.05 +0.1/-0 ±0.25/-0 +0.30/-0.10 ±0.10 Reel E2 P0 P1 P2 T 3.50 ±0.05 4.00 ±0.10 4.00 ±0.10 2.00 ±0.10 0.254 ±0.02 W1 S R K M N H UNIT: mm Tape Size Reel Size M 8mm ø180 ø180.00 ±0.50 N 60.0 ±0.50 W1 8.4 +1.5/-0.0 H 13.0 ±0.20 S 1.5 Min. K 13.5 Min. R 3.0 ±0.50 Leader / Trailer & Orientation Trailer Tape 300mm Min. Rev. 1.6 August 2008 Components Tape Orientation in Pocket www.aosmd.com Leader Tape 500mm Min. Page 17 of 18 AOZ1320 Package Marking DFN2x2 $P $N $O $W $L $T SOT-23 $P $N $O $A $Y $W $L $T $P $N: major part number $P $N: underbar = Green part $O: option/assembly location $W: week & year $L $T: assembly lot number $P $N: major part number $P $N: underbar = Green part $O: options $A: assembly location $Y: year $W: week $L $T: assembly lot number Alpha & Omega Semiconductor reserves the right to make changes at any time without notice. LIFE SUPPORT POLICY ALPHA & OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. Rev. 1.6 August 2008 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.aosmd.com Page 18 of 18