SP6203EM5-L | DigiCamel IC Datasheet

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SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss April 2012 Rev. 2.0.0 Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 – Fax. +1 510 668-7001 GENERAL DESCRIPTION The SP6203 and SP 6205 are ultra low noise CMOS LDOs with very low dropout and ground current. The noise performance is achieved by means of an external bypass capacitor without sacrificing turn -on and turn -off speed critical to portable applications. Extremely stable and easy to use, these devices offer excellent PSRR and Line/Load regulation. Target applications include battery -powered equipment such as portable and wireless products. Regulators' ground current increases only slightly in dropout. Fast turn -on/turn-off enable control and an internal 30 Ω pull down on output allows quick discharge of output even under no load conditions. Both LDOs are protected with current limit and thermal shutdown. Both LDOs are available in fixed & adjustable output voltage versions and co me in an industry standard 5-pin SOT-23 and small 2X3mm 8-pin DFN packages. For SC -70 100mA CMOS LDO, SP6213 is available.

APPLICATIONS

 Battery-Powered Systems  Medical Equipments  MP3/CD Players  Digital Cameras

FEATURES

 300mA/500mA Output Current  SP6203: 300mA – SP6205: 500mA  Low Dropout Voltage: 0.6Ω PMOS FET  2.7V to 5.5V Input Voltage  Fixed and Adjustable Output Voltage  Accurate Output Voltage: 2% over Temp.  67dB Power Supply Rejection Ratio  12μVRMS Low Output Noise  Unconditionally Stable with 2.2μF Ceramic  Low Quiescent Current: 5μA  Low Ground Current: 350μA at 500mA  Fast Turn-On and Turn-Off: 60μS  Very Good Load/Line Regulation: 0.07/0.0 %  Current Limit and Thermal Protection  RoHS Compliant “Green”/Halogen Free 5-Pin SOT23 and 8-Pin DFN Packages TYPICAL APPLICATION DIAGRAM Fig. 1: SP6203/SP6205 Application Diagram

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 2/14 Rev. 2.0.0 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. OPERATING RATINGS Note 1: Maximum power dissipation can be calculated using the formula: PD = (T J(max) - TA) / θ JA, where TJ(max) is the junction temperature, T A is the ambient temperature and θ JA is the junction -to-ambient thermal resistance. θ JC is 6°C/W for this package. Exceeding the maximum allowable power dissipation will result in excessive die temperature and the regula tor will go into thermal shutdown mode. ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Junction Temperature of T J = 25°C only; limits applying over the full Operating Junction Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed thro ugh test, design, or statistical correlation. Typical values represent the most likely parametric norm at T J = 25°C, and are provided for reference purposes only. Unless otherwise indicated, V IN = (VOUT + 0.5V) to 6V, CIN = 2.2µF, COUT = 2.2µF and IOUT = 100µA, TJ= –40°C to 85°C. Parameter Min. Typ. Max. Units Conditions Input Voltage 6 V • Output Voltage -2 +2 % • Variation from specified VOUT Output Voltage Temperature Coefficient 2 50 ppm/°C ∆ VOUT/∆T Reference Voltage 1.225 1.25 1.275 V • Adjustable version only Line Regulation 0.04 0.3 %/V ∆VOUT (VIN below 6V) Load Regulation 3 0.07 0.13 0.3 0.5 % IOUT = 0.1mA to 300mA (SP6203) IOUT = 0.1mA to 500mA (SP6205) Dropout Voltage for VOUT ≥ 3.0V4 0.06 120 180 300 300 500 mV IOUT = 0.1mA IOUT = 100mA IOUT = 200mA IOUT = 300mA (SP6203) IOUT = 500mA (SP6205) Ground Pin Current 5 110 175 235 350 100 330 490 µA IOUT = 0.1mA (IQUIESCENT) IOUT = 100mA IOUT = 200mA IOUT = 300mA (SP6203) IOUT = 500mA (SP6205) Shutdown Supply Current 0.01 1 µA • VEN < 0.4V (shutdown) Current Limit 0.33 0.55 0.50 0.85 0.8 1.4 A VOUT = 0V (SP6203) VOUT = 0V (SP6205) Thermal Shutdown Junction Temperature 170 °C Regulator Turns off Thermal Shutdown Hysteresis 12 °C Regulator turns on again at 158°C Power Supply Rejection Ratio 67 dB f≤1kHz Output Noise Voltage 6 150 630 µVRMS CBYP = 10nF, IOUT = 0.1mA CBYP = 10nF, IOUT = 300mA CBYP = 10nF, IOUT = 0.1mA CBYP = 10nF, IOUT = 300mA Thermal Regulation 7 0.05 %/W ∆VOUT/∆PD Wake-Up Time (TWU) 8 (from shutdown mode) 25 50 µS VIN ≥ 4V 10 IOUT = 30mA

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 3/14 Rev. 2.0.0 Parameter Min. Typ. Max. Units Conditions Turn-On Time (TON) 9 (from shutdown mode) 60 120 µS VIN ≥ 4V 10 IOUT = 30mA Turn-Off Time (TOFF) 100 250 25 µS IOUT = 0.1mA, VIN ≥ 4V 10 IOUT = 300mA, VIN ≥ 4V 10 Output Discharge Resistance 30 Ω No Load Enable Input Logic Low Voltage 0.4 V • Regulator Shutdown Enable Input Logic High Voltage 1.6 V • Regulator Enabled Note 2: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Note 3: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Note 4: Dropout -voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Note 5: Ground pin current is the regulator quiescent current. The total current drawn from th e supply is the sum of the load current plus the ground pin current. Note 6: Output noise voltage is defined within a certain bandwidth, namely 10Hz < BW < 100kHz. An external bypass cap (10nF) from reference output (BYP pin) to ground significantly reduce s noise at output. Note 7: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load and line regulation effects. Specifications are for a 300mA load pulse at V IN = 6V for t = 1ms. Note 8: The wake-up time (TWU) is defined as the time it takes for the output to start rising after enable is brought high. Note 9: The total turn -on time is called the settling time (T S), which is defined as the condition when both the output and the bypass node are within 2% of their fully enabled values when released from shutdown. Note 10: For output voltage versions requiring V IN to be lower than 4V, timing (TON & TOFF) increases slightly. BLOCK DIAGRAM Fig. 2: SP6203/SP6205 Functional Diagram

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 4/14 Rev. 2.0.0 PIN ASSIGNMENT 5-Pin SOT23 8 -Pin DFN Fig. 3: SP6203/SP6205 Pin Assignment PIN DESCRIPTION Name SOT-23-5 Description VIN 1 Power Supply Input GND 2 Ground Terminal EN 3 Enable/Shutdown - Logic high = enable - Logic low = shutdown BYP/ADJ 4 Bypass - Fixed voltage option: Reference bypass input for ultra-quiet operation. Connecting a 10nF cap on this pin reduces output noise. Adjustable Input – Adjustable voltage option: Adjustable regulator feedback input. Connect to a resistive voltage - Divider network. VOUT 5 Regulator Output Voltage Name DFN-8 Description VOUT/ADJ 1 Regulator Output Voltage - Fixed voltage option: Connect to Pin 8 VOUT. Adjustable Input – Adjustable voltage option: Adjustable regulator feedback input. Connect to a resistive voltage - Divider network. BYP/NC 2 Bypass - Fixed voltage option: Reference bypass input for ultra-quiet operation. Connecting a 10nF cap on this pin reduces output noise. No Connect – Adjustable voltage option. GND 3 Ground Terminal EN 4 Enable/Shutdown - Logic high = enable - Logic low = shutdown VIN 5 Power Supply Input NC 6 No Connect NC 7 No Connect VOUT 8 Regulator Output Voltage

ORDERING INFORMATION

Quantity Voltage Option Note 1 SP6203EM5-L -40°C≤TA≤+125°C Q2WW SOT-23-5 Bulk ADJ Halogen Free SP6203EM5-L/TR 2.5K/Tape & Reel SP6203EM5-L-2-5 L2WW Bulk 2.5V Halogen Free SP6203EM5-L-2-5/TR 2.5K/Tape & Reel SP6203EM5-L-2-8 Q3WW Bulk 2.8V Halogen Free SP6203EM5-L-2-8/TR 2.5K/Tape & Reel SP6203EM5L-2-85 H2WW Bulk 2.85V Halogen Free SP6203EM5L-2-85/TR 2.5K/Tape & Reel SP6203EM5-L-3-0 M2WW Bulk 3.0V Halogen Free SP6203EM5-L-3-0/TR 2.5K/Tape & Reel SP6203EM5-L-3-3 J2WW Bulk 3.3V Halogen Free SP6203EM5-L-3-3/TR 2.5K/Tape & Reel SP6203ER-L -40°C≤TA≤+125°C YWW XXX DFN8 Bulk ADJ Halogen Free SP6203ER-L/TR 3K/Tape & Reel SP6203ER-L-1-8 E0 YWW XXX Bulk 1.8V Halogen Free SP6203ER-L-1-8 3K/Tape & Reel SP6205EM5-L -40°C≤TA≤+125°C A3WW SOT-23-5 Bulk ADJ Halogen Free SP6205EM5-L/TR 2.5K/Tape & Reel SP6205EM5-L-1-8 X2WW Bulk 1.8V Halogen Free SP6205EM5-L-1-8/TR 2.5K/Tape & Reel SP6205EM5-L-2-5 V2WW Bulk 2.5V Halogen Free SP6205EM5-L-2-5/TR 2.5K/Tape & Reel SP6205EM5-L-2-8 E3WW Bulk 2.8V Halogen Free SP6205EM5-L-2-8/TR 2.5K/Tape & Reel SP6205EM5-L-2-85 S2WW Bulk 2.85V Halogen Free SP6205EM5-L-2-85/TR 2.5K/Tape & Reel SP6205EM5-L-3-0 W2WW Bulk 3.0V Halogen Free SP6205EM5-L-3-0/TR 2.5K/Tape & Reel SP6205EM5-L-3-3 T2WW Bulk 3.3V Halogen Free SP6205EM5-L-3-3/TR 2.5K/Tape & Reel SP6205ER-L -40°C≤TA≤+125°C YWW XXX DFN8 Bulk ADJ Halogen Free SP6205ER-L/TR 3K/Tape & Reel SP6205ER-L-2-5 G0 YWW XXX Bulk 2.5V Halogen Free SP6205ER-L-2-5/TR 3K/Tape & Reel “Y” = Year – “WW” = Work Week – “X” = Lot Number; when applicable.

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 6/14 Rev. 2.0.0 TYPICAL PERFORMANCE CHARACTERISTICS All data taken at V IN = 2.7V to 5.5V, T J = TA = 25°C, unless otherwise specified - Schematic and BOM from Application Information section of this datasheet. Fig. 4: Current Limit Fig. 5: Turn-On Time, RLOAD=50Ω (60mA) Fig. 6: Turn-Off Time, RLOAD=6Ω (500mA) Fig. 7: Turn-Off Time, RLOAD=30KΩ (0.1mA) Fig. 8: Load Regulation, IO=100µA ~500mA Fig. 9: Regulation, Line Step from 4V to 6V, IO=1mA

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 7/14 Rev. 2.0.0 Fig. 10: Start Up Waveform, VIN=3.5V, IO=500mA Fig. 11: Start Up Waveform, Slow VIN , No Load Fig. 12: Start Up Waveform, Slow VIN, 500mA Output Load Fig. 13: Start Up Waveform, Slow VIN, COUT=1000μF, IO=0mA Fig. 14: Start Up Waveform, Slow VIN, COUT=1000μF, IO=500mA Fig. 15: Fast VIN, No Load

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 8/14 Rev. 2.0.0 Fig. 16: Fast VIN, 500mA Output Load Fig. 17: Fast VIN = 1000μF Output Load Fig. 18: Fast VIN , COUT=1000μF, IO=500mA Fig. 19: Output Noise, CBYP = 10nF Fig. 20: Output Noise, CBYP = open

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 9/14 Rev. 2.0.0 THEORY OF OPERATION GENERAL OVERVIEW The SP6203/6205 is intended for applications where very low dropout voltage, low supply current and low output noise are critical, even with high load conditions (500mA maximum). Unlike bipolar regulators, the SP6203/6205 (CMOS LDO) supply current increases only slightly with load current. The SP6203/6205 contains an internal bandgap referen ce which is fed into the inverting input of the LDO -amplifier. The output voltage is then set by means of a resistor divider and compared to the bandgap reference voltage. The error LDO -amplifier drives the gate of a P -channel MOSFET pass device that has a RDS(ON) of 0.6 Ω at 500mA producing a 300mV drop at the output. Furthermore, the SP6203/6205 has its own current limit circuitry (500mA/850mA) to ensure that the output current will not damage the device during output short, overload or start-up. Also, the SP6203/6205 includes thermal shut- down circuitry to turn off the device when the junction temperature exceeds 170°C and it re- mains off until the temperature drops by 12°C. ENABLE/SHUTDOWN OPERATION The SP6203/6205 is turned off by pulling the VEN pin below 0.4V and turned on by pulling it above 1.6V. If this enable/shutdown feature is not required, it should be tied directly to the input supply voltage to keep the regulator output on at all time. While in shutdown, V OUT quickly falls to zero (turn-off time is dependent on load conditions and output capacitance on V OUT) and power consumption drops nearly to zero. INPUT CAPACITOR A small capacitor of 2.2μF is required from V IN to GND if a battery is used as the power source. Any good quality electrolytic, ceramic or tantalum capacitor may be used at the input. OUTPUT CAPACITOR An output capacitor is required between V OUT and GND to prevent oscillation. A 2.2μF output capacitor is recommended. Larger values make the chip more stable which means an improvemen t of the regulator’s transient response. Also, when operating from other sources than batteries, supply-noise rejection can be improved by increasing the value of the input and output capacitors and using passive filtering techniques. For a lower output cu rrent, a smaller output capacitance can be chosen. Finally, the output capacitor should have an effective series resistance (ESR) of 0.5 Ω or less. Therefore, the use of good quality ceramic or tantalum capacitors is advised. BYPASS CAPACITOR A bypass pin (BYP) is provided to decouple the bandgap reference. A 10nF external capacitor connected from BYP to GND reduces noise present on the internal reference, which in turn significantly reduces output noise and also improves power supply rejection. Note that th e minimum value of C OUT must be increased to maintain stability when the bypass capacitor is used because C BYP reduces the regulator phase margin. If output noise is not a concern, this input may be left unconnected. Larger capacitor values may be used to further improve power supply rejection, but result in a longer time period (slower turn on) to settle output voltage when power is initially applied. NO LOAD STABILITY The SP6203/6205 will remain stable and in regulation with no external load (other than the internal voltage driver) unlike many other voltage regulators. This is especially important in CMOS RAM battery back-up applications. TURN ON TIME The turn on response is split up in two separate response categories: the wake up

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 10/14 Rev. 2.0.0 time (T WU) and the sett ling time (T S). The wake up time is defined as the time it takes for the output to rise to 2% of its total value after being released from shutdown (E N > 0.4V). The settling time is defined as the condition where the output reaches 98% of its total value af ter being released from shutdown. The latter is also called the turn on time and is dependent on the output capacitor, a little bit on load and, if present, on a bypass capacitor. TURN OFF TIME The turn off time is defined as the condition where the output voltage drops about 66% (θ) of its total value. 5 θ to 7 θ is the constant where the output voltage drops nearly to zero. There will always be a small voltage drop in shutdown because of the switch unless we short-circuit it. The turn off time of the output voltage is dependent on load conditions, output capacitance on VOUT (time constant  = RLCL) and also on the difference in voltage between input and output. THERMAL CONSIDERATIONS The SP6203/6205 is designed to provide 300/500mA of continuous curren t in a tiny package. Maximum power dissipation can be calculated based on the output current and the voltage drop across the part. To determine the maximum power dissipation of the package, use the junction -to-ambient thermal resistance of the device and t he following basic equation: PD = (TJ(max) - TA) / θJA TJ(max) is the maximum junction temperature of the die and is 125°C. T A is the ambient temperature. θJA is the junction -to-ambient thermal resistance for the regulator and is layout dependent. The SOT -23-5 package has a θJA of approximately 191°C/W for minimum PCB copper footprint area. This results in a maximum power dissipation of: PD(max)=[(125°C-25°C)/(191°C/W)] = 523mW The actual power dissipation of the regulator circuit can be determined using on e simple equation: PD = (VIN - VOUT) * IOUT + VIN * IGND To prevent the device from entering thermal shutdown, maximum power dissipation cannot be exceeded. Substituting PD(max) for P D and solving for the operating conditions that are critical to the application will give the maximum operating conditions for the regulator circuit. For example, if we are operating the SP6203 3.0V at room temperature, with a minimum footprint layout and output current of 300mA, the maximum input voltage can be determined, based on the equation below. Ground pin current can be taken from the electrical specifications table (0.23mA at 300mA). 390mW = (VIN-3.0V) * 300mA + VIN *0.23mA After calculations, we find that the maximum input voltage of a 3.0V application at 300mA of output current in a SOT -23-5 package is 4.7V. So if the intent is to operate a 5V output version from a 6V supply at 300mA load and at a 25°C ambient temperature, then the actual total power dissipation will be: PD=([6V-5V]*[300mA])+(6V*0.23mA)=301.4mW This is well below the 523mW package maxi - mum. Therefore, the regulator can be used. Note that the regulator cannot always be used at its maximum current rating. For example, in a 5V input to 3.0V output application at an ambient temperature of 25°C and operating at the full 500mA (I GND=0.355mA) load, the regulator is limited to a much lower load current, determined by the following equation: 523mW = ( [5V-3V]*[ Iload(max)]) +(5V*0.350mA)

SSPP66220033 // SSPP66220055 330000mmAA//550000mmAA LLooww NNooiissee CCMMOOSS LLDDOO RReegguullaattoorrss © 2012 Exar Corporation 11/14 Rev. 2.0.0 After calculation, we find that in such an application (SP6205) the regulator is limited to 260.6mA. Doing the same calculations for the 300mA LDO (SP6203) will limit the regulator’s output current to 260.9mA. Also, taking advantage of the very low dropout voltage characteristics of the SP6203/6205, power dissipation can be reduced by using the lowest possible input voltage to minimize the input-to-output drop. ADJUSTABLE REGULATOR APPLICATIONS The SP6203/6205 can be adjusted to a specific output voltage by using two external resistors (see functional diagram). The resistors set the output voltage based on the following equation: VOUT = VREF *(R1/R2 + 1) Resistor values are not critical because ADJ (adjust) has a high input impedance, but for best performance use resistors of 470K Ω or less. A bypass capacitor from ADJ to V OUT provides improved noise performance. DUAL-SUPPLY OPERATION When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to ground. LAYOUT CONSIDERATIONS The primary path of heat conduction out of the package is via the package leads. Therefore, careful considerations have to be taken into account: 1) Attaching the part to a larger copper footprint will enable better heat transfer from the device, especially on PCB’s where there are internal ground and power planes. 2) Place the input, output and bypass capacitors close to the device for optimal transient response and device behavior. 3) Connect all ground connections directly to the ground plane. In case there’s no ground plane, connect to a common local ground point before connecting to board ground. Such layouts will provide a much better thermal conductivity (lower θJA) for, a higher maximum allowable power dissipation limit.

REVISION HISTORY

2.0.0 04/03/2012 Reformatted Data Sheet Includes top package marking update. FOR FURTHER ASSISTANCE Email: customersupport@exar.com Exar Technical Documentation: http://www.exar.com/TechDoc/default.aspx? EXAR CORPORATION HEADQUARTERS AND SALES OFFICES

48720 Kato Road

Fremont, CA 94538 – USA Fax: +1 (510) 668-7030 www.exar.com NOTICE EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no li cense under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user’s specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to it s satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. Reproduction, in part or whole, without the prior wr itten consent of EXAR Corporation is prohibited.

Click to View Pricing, Inventory, Delivery & Lifecycle Information: Exar: SP6205ER-L-2-5/TR SP6203EM5-L-3-3/TR SP6205ER-L/TR SP6205ER-L-3-0/TR SP6203ER-L/TR SP6205EM5- L/TR SP6205EM5-L-2-5/TR SP6205EM5-L-3-0/TR SP6203EM5-L/TR SP6205ER-L-1-8/TR SP6205EM5-L-1-8/TR SP6203EM5-L-2-8/TR SP6203EM5-L-2-85/TR SP6203EM5-L-3-0/TR SP6205EM5-L-3-3/TR SP6203EM5-L-2-5/TR SP6205ER-L-2-8/TR SP6205EM5-L-2-85/TR SP6205ER-L-2-85/TR SP6205ER-L-3-3/TR SP6205EM5-L-2-8/TR SP6203ER-L-1-8/TR SP6203EM5-L SP6203EM5-L-2-5 SP6203EM5-L-2-8 SP6203EM5-L-2-85 SP6203EM5-L-3-0 SP6203EM5-L-3-3 SP6203ER-L SP6203ER-L-1-8 SP6205EM5-L SP6205EM5-L-1-8 SP6205EM5-L-2-5 SP6205EM5-L-2-8 SP6205EM5-L-2-85 SP6205EM5-L-3-0 SP6205EM5-L-3-3 SP6205ER-L SP6205ER-L-1-8 SP6205ER-L-2-5

Product Information

SP6203EM5-L specifications and overview.

Summary

300mA/500mA Low Noise CMOS LDO Regulators

Description

300mA/500mA Low Noise CMOS LDO Regulators

Source title SP6203EM5-L Datasheet(PDF) - Exar Corporation

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