RT9080-28GJ5

® RT9080 2μ μA IQ, 600mA Low-Dropout Linear Regulator General Description Features The RT9080 is a low-dropout (LDO) voltage regulators with enable function that operates from 1.2V to 5.5V. It provides up to 600mA of output current and offers low-power operation in miniaturized packaging.  The features of low quiescent current as low as 2μA and almost zero disable current is ideal for powering the battery equipment to a longer service life. The RT9080 is stable with the ceramic output capacitor over its wide input range from 1.2V to 5.5V and the entire range of output load current (0mA to 600mA).          Ordering Information RT9080/NPackage Type J5 : TSOT-23-5 QZ : ZQFN-4L 1x1 (Z-Type) (ZDFN-4L 1x1) Lead Plating System G : Green (Halogen Free and Pb Free)    2μ μA Ground Current at no Load PSRR = 75dB at 1kHz Adjustable Output Voltage Available by Specific Application ±2% Output Accuracy 600mA (VIN ≥ 2.3V) Output Current with EN Low (0.1μ μA) Disable Current 1.2V to 5.5V Operating Input Voltage Dropout Voltage : 0.31V at 600mA when VOUT ≥ 3V Support Fixed Output Voltage 0.8V to 3.3V Stable with Ceramic or Tantalum Capacitor Current-Limit Protection Over-Temperature Protection TSOT-23-5 and ZQFN-4L 1x1 (ZDFN-4L 1x1) Packages Available Applications  Output Voltage  08 : 0.8V  Portable, Battery Powered Equipment Ultra Low Power Microcontrollers Notebook Computers : 2H : 2.85V : Marking Information 33 : 3.3V For marking information, contact our sales representative Special Request : Any voltage between directly or through a Richtek distributor located in your 0.8V and 3.3V under specific business area. agreement Pin Function RT9080 : Without SNS Pin RT9080N : With SNS Pin Note : Richtek products are :  RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in SnPb or Pb-free soldering processes. Copyright © 2018 Richtek Technology Corporation. All rights reserved. DS9080-07 May 2018 is a registered trademark of Richtek Technology Corporation. www.richtek.com 1 RT9080 Pin Configuration (TOP VIEW) VOUT SNS/NC 5 4 VOUT 1 4 VIN 3 EN SGND 2 3 GND 2 5 VIN GND EN TSOT-23-5 ZQFN-4L 1x1 (ZDFN-4L 1x1) Functional Pin Description Pin No. TSOT-23-5 ZQFN-4L 1x1 (ZDFN-4L 1x1) Pin Name Pin Function 1 4 VIN Supply voltage input. 2 2 GND Ground. 3 3 EN Enable control input. 4 -- SNS Output voltage sense. (RT9080N only) NC No internal connection. 5 1 VOUT Output of the regulator. -- 5 (Exposed Pad) SGND Substrate of chip. Leave floating or tie to GND. Copyright © 2018 Richtek Technology Corporation. All rights reserved. www.richtek.com 2 is a registered trademark of Richtek Technology Corporation. DS9080-07 May 2018 RT9080 Functional Block Diagram VIN (without sense function) Current/Thermal Sense GND SNS (with sense function) + - EN Bandgap Reference VOUT R1 EN R2 Operation Basic Operation Enable The RT9080 is a low quiescent current linear regulator designed especially for low external components system. The input voltage range is from 1.2V to 5.5V. The RT9080 delivers the output power when it is set to enable state. When it works in disable state, there is no output power and the operation quiescent current is almost zero. The minimum required output capacitance for stable operation is 1μF effective capacitance after consideration of the temperature and voltage coefficient of the capacitor. Output Transistor The RT9080 builds in a P-MOSFET output transistor which provides a low switch-on resistance for low dropout voltage applications. Error Amplifier The Error Amplifier compares the internal reference voltage with the output feedback voltage from the internal divider, and controls the Gate voltage of P-MOSFET to support good line regulation and load regulation at output voltage. Copyright © 2018 Richtek Technology Corporation. All rights reserved. DS9080-07 May 2018 Current-Limit Protection The RT9080 provides current limit function to prevent the device from damages during over-load or shorted-circuit condition. This current is detected by an internal sensing transistor. Over-Temperature Protection The over-temperature protection function will turn off the P-MOSFET when the junction temperature exceeds 150°C (typ.), and the output current exceeds 80mA. Once the junction temperature cools down by approximately 20°C, the regulator will automatically resume operation. is a registered trademark of Richtek Technology Corporation. www.richtek.com 3 RT9080 Absolute Maximum Ratings         (Note 1) VIN, VOUT, SNS, EN to GND ------------------------------------------------------------------------------------------VOUT to VIN ---------------------------------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25°C TSOT-23-5 ------------------------------------------------------------------------------------------------------------------ZQFN-4L 1x1 (ZDFN-4L 1x1) -------------------------------------------------------------------------------------------Package Thermal Resistance (Note 2) TSOT-23-5, θJA ------------------------------------------------------------------------------------------------------------TSOT-23-5, θJC ------------------------------------------------------------------------------------------------------------ZQFN-4L 1x1 (ZDFN-4L 1x1), θJA -------------------------------------------------------------------------------------ZQFN-4L 1x1 (ZDFN-4L 1x1), θJC ------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------Junction Temperature ----------------------------------------------------------------------------------------------------Storage Temperature Range -------------------------------------------------------------------------------------------ESD Susceptibility (Note 3) HBM (Human Body Model) ---------------------------------------------------------------------------------------------- Recommended Operating Conditions    −0.3V to 6.5V −6.5V to 0.3V 0.43W 0.44W 230.6°C/W 21.8°C/W 226°C/W 43°C/W 260°C 150°C −65°C to 150°C 2kV (Note 4) Input Voltage, VIN --------------------------------------------------------------------------------------------------------- 1.2V to 5.5V Junction Temperature Range -------------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range -------------------------------------------------------------------------------------------- −40°C to 85°C Electrical Characteristics (VOUT + 1 < VIN < 5.5V, TA = 25°C, unless otherwise specified) Parameter Output Voltage Range Symbol Test Conditions VOUT DC Output Accuracy ILOAD = 1mA Min Typ Max Unit 0.8 -- 3.3 V 2 -- 2 % 0.8V  VOUT  1.05V (TSOT-23-5) -- 1.05 1.33 0.8V  VOUT  1.05V (ZQFN-4L 1x1) -- 1.05 1.63 1.05V  VOUT  1.2V -- 0.8 1.13 1.2V  VOUT  1.5V -- 0.71 1.03 1.5V  VOUT  1.8V -- 0.57 0.93 1.8V  VOUT  2.1V -- 0.57 0.83 2.1V  VOUT  2.5V -- 0.41 0.73 2.5V  VOUT  3V -- 0.36 0.63 3V  VOUT -- 0.31 0.53 ILOAD = 0mA, VOUT  5.5V VIN  VOUT + VDROP -- 2 4 A Shutdown GND Current (Note 6) VEN = 0V -- 0.1 0.5 A Shutdown Leakage Current (Note 6) VEN = 0V, VOUT = 0V -- 0.1 0.5 A Dropout Voltage (ILOAD = 600mA) (Note 5) VCC Consumption Current VDROP IQ Copyright © 2018 Richtek Technology Corporation. All rights reserved. www.richtek.com 4 V is a registered trademark of Richtek Technology Corporation. DS9080-07 May 2018 RT9080 Parameter EN Input Current Symbol IEN LINE Line Regulation Test Conditions Min Typ Max Unit -- -- 0.1 A 1.2V  VIN  1.5V -- 0.3 0.6 1.5V  VIN  1.8V -- 0.15 0.3 1.8V  VIN  5.5V -- 0.13 0.35 VEN = 5.5V ILOAD = 1mA % Load Regulation LOAD 1mA < ILOAD < 600mA -- 0.5 1 % Power Supply Rejection Ratio PSRR VIN = 3V, ILOAD = 50mA, COUT = 1F, VOUT = 2.5V, f = 1kHz -- 75 -- dB VOUT = 0.8V -- 26 -- VOUT = 1.2V -- 37 -- VOUT = 1.8V -- 39 -- VOUT = 3.3V -- 42 -- COUT = 1F, ILOAD = 150mA, BW = 10Hz to 100kHz, VIN = VOUT + 1V Output Voltage Noise Output Current Limit VRMS ILIM VOUT = 90%VOUT(Normal) 610 1100 -- Logic-High VIH VIN = 5V 0.9 -- -- Logic-Low VIL VIN = 5V -- -- 0.4 Thermal Shutdown Temperature TSD ILOAD = 30mA, VIN  1.5V -- 150 -- C Thermal Shutdown Hysteresis TSD -- 20 -- C -- 80 --  Enable Input Voltage Discharge Resistance EN = 0V, VOUT = 0.1V mA V Note 1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may affect device reliability. Note 2. θJA is measured in the natural convection at TA = 25°C on a two-layer Richtek Evaluation Board for ZQFN-4L 1x1 (ZDFN4L1x1) Package. θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7 for TSOT-235 Package. Note 3. Devices are ESD sensitive. Handling precaution is recommended. Note 4. The device is not guaranteed to function outside its operating conditions. Note 5. The dropout voltage is defined as VIN − VOUT, when VOUT is 98% of the normal value of VOUT. Note 6. The specification is tested at wafer stage and guarantee by design after assembly. Copyright © 2018 Richtek Technology Corporation. All rights reserved. DS9080-07 May 2018 is a registered trademark of Richtek Technology Corporation. www.richtek.com 5 RT9080 Typical Application Circuit RT9080N VIN CIN 1µF EN VIN VOUT VOUT COUT (Effective Capacitance SNS  1µF) EN GND Figure 1. Application with Sense Function RT9080 VIN CIN 1µF EN VIN VOUT VOUT COUT (Effective Capacitance  1µF) EN GND Figure 2. Application without Sense Function RT9080N VIN CIN 1µF VIN VOUT VOUT R1 SNS EN EN NC COUT (Effective Capacitance  1µF) R2 GND Figure 3. Adjustable Output Voltage Application Circuit Copyright © 2018 Richtek Technology Corporation. All rights reserved. www.richtek.com 6 is a registered trademark of Richtek Technology Corporation. DS9080-07 May 2018 RT9080 Typical Operating Characteristics Output Voltage vs. Temperature 3.40 0.88 3.38 0.86 3.36 Output Voltage (V) Output Voltage (V) Output Voltage vs. Temperature 0.90 0.84 0.82 0.80 VIN = 1.2V VIN = 2.1V VIN = 5.5V 0.78 0.76 3.34 3.32 VIN = 3.8V VIN = 4.5V VIN = 5.5V 3.30 3.28 3.26 0.74 3.24 0.72 3.22 VOUT = 0.8V, ILOAD = 1mA 0.70 VOUT = 3.3V, ILOAD = 1mA 3.20 -50 -25 0 25 50 75 100 125 -50 -25 Output Voltage vs. Input Voltage 0.88 Output Voltage (V) Output Voltage (V) 0.86 0.84 0.82 0.80 0.78 0.76 0.74 VOUT = 0.8V, ILOAD = 1mA 0.70 2.06 2.92 3.78 4.64 0.808 0.806 0.804 0.802 0.800 0.798 0.796 0.794 0.792 0.790 0.788 0.786 0.784 0.782 0.780 5.5 0 TA = 65°C TA = 25°C TA = −40°C 200 300 400 500 600 TA = 65°C TA = 25°C TA = −40°C 700 GND Current (μA) GND Current (μA) 100 800 300 125 Ground Current vs. Load Current 900 450 350 100 Load Current (mA) Ground Current vs. Load Current 400 75 VIN = 2V, ILOAD = 0mA to 600mA Input Voltage (V) 500 50 Output Voltage vs. Load Current 0.90 1.2 25 Temperature (°C) Temperature (°C) 0.72 0 250 200 150 600 500 400 300 200 100 50 VIN = 2.2V, VOUT = 0.8V 0 100 VIN = 4.3V, VOUT = 3.3V 0 1 10 100 Load Current (mA) Copyright © 2018 Richtek Technology Corporation. All rights reserved. DS9080-07 May 2018 1000 1 10 100 1000 Load Current (mA) is a registered trademark of Richtek Technology Corporation. www.richtek.com 7 RT9080 Shutdown Current vs. Input Voltage Shutdown Leakage Current vs. Temperature 0.045 VOUT = 0.8V, EN = 0V Shutdown Leakage Current (μA)1 Shutdown Current (μA)1 0.10 0.08 0.06 0.04 0.02 0.00 1 2 3 4 5 VOUT = 0.8V, EN = 0V 0.040 0.035 0.030 0.025 0.020 VIN = 1.8V VIN = 5.5V 0.015 0.010 0.005 0.000 -50 6 -25 0 Enable Threshold vs. Input Voltage Enable High Enable High EN Voltage (V) EN Voltage (V) Enable Low 0.5 0.4 0.3 0.2 0.66 0.65 0.64 Enable Low 0.63 0.1 0.62 0.0 0.61 VIN = 5.5V 1 2 3 4 5 -50 6 -25 0 Input Voltage (V) 25 50 75 100 125 Temperature (°C) Dropout Voltage vs. Temperature ILOAD = 1mA ILOAD = 400mA ILOAD = 10mA ILOAD = 500mA ILOAD = 100mA ILOAD = 600mA ILOAD = 200mA ILOAD = 300mA Current Limit vs. Temperature 1200 VOUT = 3.3V VOUT = 0.8V 1000 VOUT = 3.3V Current Limit (mA) Dropout Voltage (mV) 125 0.67 0.6 350 100 Enable Threshold vs. Temperature 0.7 400 75 0.68 0.8 450 50 Temperature (°C) Input Voltage (V) 500 25 300 250 200 150 100 800 600 400 200 50 0 VIN = 5V 0 -50 -25 0 25 50 75 100 Temperature (°C) Copyright © 2018 Richtek Technology Corporation. All rights reserved. www.richtek.com 8 125 -50 -25 0 25 50 75 100 125 Temperature (°C ) is a registered trademark of Richtek Technology Corporation. DS9080-07 May 2018 RT9080 Fold-Back Current Limit vs. Temperature SNS Input Current vs. Temperature 1400 0.9 0.8 SNS Input Current (μA) Current Limit (mA) 1200 1000 VOUT = 3.3V 800 600 VOUT = 0.8V 400 200 VIN = 5V 0 0.7 0.6 0.5 0.4 0.3 0.2 0.1 VIN = 5V, VOUT = 0.8V, EN = 3V 0.0 -50 -25 0 25 50 75 100 125 -50 0 25 50 75 Temperature (°C ) Temperature (°C) Power On from EN Power Off from EN EN (2V/Div) EN (2V/Div) VOUT (2V/Div) VOUT (2V/Div) I LOAD (200mA/Div) I LOAD (200mA/Div) VIN = 4V, VOUT = 3.3V, ILOAD = 600mA 100 125 VIN = 4V, VOUT = 3.3V, ILOAD = 600mA Time (500μs/Div) Time (500μs/Div) Line Transient Load Transient VIN = 2.8V to 3.8V, VOUT = 1.8V, ILOAD = 1mA VIN = 1.8V, VOUT = 0.8V, ILOAD = 1mA to 600mA I LOAD (200mA/Div) VIN (1V/Div) VOUT (2mV/Div) VOUT (20mV/Div) Time (250μs/Div) Copyright © 2018 Richtek Technology Corporation. All rights reserved. DS9080-07 May 2018 -25 Time (100μs/Div) is a registered trademark of Richtek Technology Corporation. www.richtek.com 9 RT9080 PSRR vs. Frequency 0 -20 -20 ILOAD = 50mA ILOAD = 30mA ILOAD = 15mA ILOAD = 10mA -40 PSRR (dB) PSRR (dB) PSRR vs. Frequency 0 -60 -80 -40 ILOAD = 150mA ILOAD = 50mA ILOAD = 15mA -60 -80 VIN = 2.8V, VOUT = 0.8V, COUT = 1μF VIN = 3.3V, VOUT = 2.8V, COUT = 1μF -100 -100 10 100 1000 10000 100000 1000000 10 100 1000 100000 1000000 Frequency (Hz) Frequency (Hz) Output Noise Output Noise 500 500 400 400 300 300 200 200 Noise (μV) Noise (μV) 10000 100 0 -100 -200 100 0 -100 -200 -300 -300 VIN = 1.8V, VOUT = 0.8V, ILOAD = 600mA, COUT = 1μF, Frequency = 10Hz to 100kHz -400 -500 VIN = 4.5V, VOUT = 3.3V, ILOAD = 600mA, COUT = 1μF, Frequency = 10Hz to 100kHz -400 -500 0 1 2 3 4 5 6 7 8 sec (m) Copyright © 2018 Richtek Technology Corporation. All rights reserved. www.richtek.com 10 9 10 0 1 2 3 4 5 6 7 8 9 10 sec (m) is a registered trademark of Richtek Technology Corporation. DS9080-07 May 2018 RT9080 Application Information Enable The RT9080 has an EN pin to turn on or turn off the regulator, When the EN pin is in logic high, the regulator will be turned on. The shutdown current is almost 0μA typical. The EN pin may be directly tied to VIN to keep the part on. The Enable input is CMOS logic and cannot be left floating. Adjustable Output Voltage Setting Because of the small input current at the SNS pin, the RT9080N with SNS pin also can work as an adjustable output voltage LDO. Figure 3 gives the connections for the adjustable output voltage application. The resistor divider from VOUT to SNS sets the output voltage when in regulation. The voltage on the SNS pin sets the output voltage and is determined by the values of R1 and R2. In order to keep a good temperature coefficient of output voltage, the values of R1 and R2 should be selected carefully to ignore the temperature coefficient of input current at the SNS pin. A current greater than 50μA in the resistor divider is recommended to meet the above requirement. The adjustable output voltage can be calculated using the formula given in equation 1 : VOUT  R1 + R2  VSNS (1) R2 where VSNS is determined by the output voltage selections in the ordering information of the RT9080N. The maximum adjustable output voltage can be as high as input voltage deducted by the dropout voltage. When we choose 51kΩ and 16kΩ as R1 and R2 respectively, and select a 0.8V output at SNS pin, the Copyright © 2018 Richtek Technology Corporation. All rights reserved. DS9080-07 May 2018 adjustable output voltage will be set to around 3.35V. Its temperature coefficient in Figure 4 is still perfect in such kind of application. Output Voltage vs. Temperature 3.35 3.34 Output Voltage (V) Like any low dropout linear regulator, the RT9080's external input and output capacitors must be properly selected for stability and performance. Use a 1μF or larger input capacitor and place it close to the IC's VIN and GND pins. Any output capacitor meeting the minimum 1mΩ ESR (Equivalent Series Resistance) and effective capacitance larger than 1μF requirement may be used. Place the output capacitor close to the IC's VOUT and GND pins. Increasing capacitance and decreasing ESR can improve the circuit's PSRR and line transient response. 3.33 3.32 3.31 3.30 3.29 ILOAD = 1mA 3.28 -50 -25 0 25 50 75 100 125 Temperature (°C) Figure 4. Temperature Coefficient of Adjustable Output Voltage The minimum recommended 50μA in the resistor divider makes the application no longer an ultra low quiescent LDO. Figure 5 is another fine adjustable output voltage application can keep the LDO still operating in low power consumption. The fine tune range is recommended to be less than 50mV (R1 ≤ 91kΩ) in order to keep a good temperature coefficient of the output voltage. RT9080N VIN VOUT 1µF R1 SNS 56pF/NC 1µF EN GND Figure 5. Fine Adjustable Output Voltage Application Circuit There isn't extra current consumption in the above application. But the temperature coefficient of output voltage will be degraded by the input current at SNS pin. If the tuning range is larger than 50mV, a compensation capacitor (56pF) is required to keep the stability of output voltage. The fine adjustable output voltage is calculated using the formula given in equation2 : VOUT  VSNS + ISNS  R1 (2) is a registered trademark of Richtek Technology Corporation. www.richtek.com 11 RT9080 where ISNS is the input Current at SNS pin (typical 550nA at room temperature) and VSNS is determined by the output voltage selections in the ordering information of the RT9080N. The maximum power dissipation depends on the operating ambient temperature for fixed T J(MAX) and thermal resistance, θJA. The derating curve in Figure 6 allows the designer to see the effect of rising ambient temperature on the maximum power dissipation. Current Limit Thermal Considerations For continuous operation, do not exceed absolute maximum junction temperature. The maximum power dissipation depends on the thermal resistance of the IC package, PCB layout, rate of surrounding airflow, and difference between junction and ambient temperature. The maximum power dissipation can be calculated by the following formula : 0.6 Maximum Power Dissipation (W)1 The RT9080 contains an independent current limiter, which monitors and controls the pass transistor's gate voltage, limiting the output current to 1.1A (typ.). The current limiting level is reduced to around 0.6A named fold-back current limit when the output voltage is further decreased. The output can be shorted to ground indefinitely without damaging the part. Four-Layer PCB for TSOT-23-5 package Two-Layer Richtek EVB for ZQFN (ZDFN)-4L 1x1 package 0.5 0.4 0.3 ZQFN-4L 1x1 (ZDFN-4L 1x1) 0.2 TSOT-23-5 0.1 0.0 0 25 50 75 100 125 Ambient Temperature (°C) Figure 6. Derating Curve of Maximum Power Dissipation PD(MAX) = (TJ(MAX) − TA) / θJA where TJ(MAX) is the maximum junction temperature, TA is the ambient temperature, and θJA is the junction to ambient thermal resistance. For recommended operating condition specifications the maximum junction temperature is 125°C and TA is the ambient temperature. The junction to ambient thermal resistance, θJA, is layout dependent. For TSOT-23-5 package, the thermal resistance, θJA, is 230.6°C/W on a standard JEDEC 51-7 four-layer thermal test board. For ZQFN-4L 1x1 (ZDFN-4L 1x1) package, the thermal resistance, θJA, is 226°C/W on a two-layer Richtek evaluation board. The maximum power dissipation at TA = 25°C can be calculated by the following formula : PD(MAX) = (125°C − 25°C) / (230.6°C/W) = 0.43W for TSOT-23-5 package PD(MAX) = (125°C − 25°C) / (226°C/W) = 0.44W for ZQFN-4L 1x1 (ZDFN-4L 1x1) package Copyright © 2018 Richtek Technology Corporation. All rights reserved. www.richtek.com 12 is a registered trademark of Richtek Technology Corporation. DS9080-07 May 2018 RT9080 Outline Dimension H D L B C b A A1 e Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.700 1.000 0.028 0.039 A1 0.000 0.100 0.000 0.004 B 1.397 1.803 0.055 0.071 b 0.300 0.559 0.012 0.022 C 2.591 3.000 0.102 0.118 D 2.692 3.099 0.106 0.122 e 0.838 1.041 0.033 0.041 H 0.080 0.254 0.003 0.010 L 0.300 0.610 0.012 0.024 TSOT-23-5 Surface Mount Package Copyright © 2018 Richtek Technology Corporation. All rights reserved. DS9080-07 May 2018 is a registered trademark of Richtek Technology Corporation. www.richtek.com 13 RT9080 1 1 2 2 DETAIL A Pin #1 ID and Tie Bar Mark Options Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated. Symbol Dimensions In Millimeters Dimensions In Inches Min. Max. Min. Max. A 0.300 0.400 0.012 0.016 A1 0.000 0.050 0.000 0.002 A3 0.117 0.162 0.005 0.006 b 0.175 0.275 0.007 0.011 D 0.900 1.100 0.035 0.043 D2 0.450 0.550 0.018 0.022 E 0.900 1.100 0.035 0.043 E2 0.450 0.550 0.018 0.022 e L 0.625 0.200 0.025 0.300 0.008 0.012 H 0.039 0.002 H1 0.064 0.003 Z-Type 4L QFN 1x1 Package Richtek Technology Corporation 14F, No. 8, Tai Yuen 1st Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Richtek products are sold by description only. Customers should obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries. www.richtek.com 14 DS9080-07 May 2018