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RT9065.pdf

发布时间：2022-05-29 发布人：admin 分类：说明书 资料大小：0.18M 资料格式：pdf 举报 版权申诉
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    ® RT9065 500mA, Low Dropout, Low Noise, Ultra-Fast Linear Regulator General Description The RT9065 is designed for portable RF and wireless applications with demanding performance and space requirements. The RT9065 performance is optimized for battery powered systems to deliver ultra low noise and low quiescent current. A noise bypass pin is available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The RT9065 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand held wireless devices. The RT9065 consumes less than 0.01μA in shutdown mode and has fast turn-on time less than 10μs. The other features include low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. The RT9065 is available in the SOT-23-6 package. Features Ultra-Low-Noise for RF Application Ultra-Fast Response in Line/Load Transient Quick Start-Up (Typically 10μμμμμs) 0.01μμμμμA Shutdown Current Low Dropout : 370mV @ 500mA Wide Input Voltage Range : 2.2V to 5.5V Adjustable Output Voltage TTL Logic Controlled Shutdown Input Low Temperature Coefficient Current Limiting Protection Thermal Shutdown Protection Only 1μμμμμF Output Capacitor Required for Stability High Power Supply Rejection Ratio RoHS Compliant and Halogen Free Ordering Information RT9065 Package Type E : SOT-23-6 Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Simplified Application Circuit Applications CDMA/GSM Cellular Handsets Battery Powered Equipment Laptop, Palmtops, Notebook Computers Hand Held Instruments PCMCIA Cards Portable Information Appliances Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. VIN CIN Chip Enable RT9065 VIN VOUT ADJ BP EN GND 18676379750 VOUT COUT R1 R2 CBP © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9065-P00 May 2012 www.richtek.com 1
    RT9065 Pin Configurations (TOP VIEW) VOUT ADJ BP 18676379750 6 5 2 4 3 VIN GND EN SOT-23-6 Functional Pin Description Pin No. Pin Name Pin Function 1 2 3 4 5 6 VIN GND EN BP ADJ VOUT Power Input. Ground. Chip Enable (Active High). Note that this pin is high impedance. There should be a pull-low 100kΩ resistor connected to GND when the control signal is floating. Reference Noise Bypass. Feedback Input. Connect a resistive divider to adjust the output voltage. Output of the Regulator. Function Block Diagram EN BP ADJ Quick Start VREF Shutdown and Logic Control MOS Driver + - Error Amplifier Current Limit and Thermal Protection VIN VOUT GND © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com 2 DS9065-P00 May 2012
    RT9065 Quick Start This function is designed to achieve internal reference voltage quick ramping up during chip turning on or power on. Shutdown and Logic Control This function block includes chip Enable/Disable and UVLO circuits. When chip is disabled, VOUT is pulled to GND through the auto-discharge MOSFET. Operation The RT9065 is a low dropout voltage linear regulator designed for RF and wireless applications which require low noise and high PSRR performance. The RT9065 builds in a P-type P-MOSFET with current capability up to 500mA. In normal operation, the Error Amplifier adjusts the gate voltage of the power MOSFET to regulate the ADJ voltage being equal to the internal 0.8V reference voltage. P-MOSFET current is detected and current limit function will work to limit the output current to a designed value when short circuit happens. Furthermore, the P-MOSFET will be shutdown if the junction temperature is higher than typically 165°C, and released to normal operation until the temperature falls below typically 135°C. © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9065-P00 May 2012 www.richtek.com 3
    RT9065 Absolute Maximum Ratings (Note 1) Supply Voltage, VIN ------------------------------------------------------------------------------------------------------ −0.3V to 6V Chip Enable Input Voltage, EN ----------------------------------------------------------------------------------------- −0.3V to 6V Output Voltage, VOUT --------------------------------------------------------------------------------------------------- −0.3V to 6V Adjust Output, ADJ ------------------------------------------------------------------------------------------------------- −0.3V to 6V Power Dissipation, PD @ TA = 25°C SOT-23-6 -------------------------------------------------------------------------------------------------------------------- 0.400W Package Thermal Resistance (Note 2) SOT-23-6, θJA --------------------------------------------------------------------------------------------------------------- 250°C/W Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C ESD Susceptibility (Note 3) HBM (Human Body Model) ---------------------------------------------------------------------------------------------- 2kV MM (Machine Model) ----------------------------------------------------------------------------------------------------- 200V Recommended Operating Conditions (Note 4) Supply Voltage, VIN ------------------------------------------------------------------------------------------------------ 2.2V to 5.5V Junction Temperature Range-------------------------------------------------------------------------------------------- Ambient Temperature Range-------------------------------------------------------------------------------------------- −40°C to 125°C −40°C to 85°C Electrical Characteristics (VIN = VOUT + 1V, CIN = COUT = 1μF, CBP =22nF, TA = 25°C, unless otherwise specified) Parameter ADJ Reference Voltage Shutdown Current Quiescent Current Dropout Voltage Symbol VADJ ISHDN IQ VDROP Test Conditions VIN = 5V, IOUT = 100mA VEN = GND IOUT = 0mA IOUT = 300mA, VOUT > 2.8V IOUT = 500mA, VOUT > 2.8V VIN = (VOUT + 1V) to 5.5V, IOUT = 1mA Line Regulation Load Regulation EN Input Bias Current EN Threshold ΔVLINE ΔVLOAD 1mA < IOUT < 500mA IIBSD Logic-High VIH Logic-Low VIL VEN = GND or VIN 10 kHz to 100kHz, IOUT = 200mA, COUT = 1μF Output Noise Voltage eNO f=100Hz Power Supply Rejection Rate f=10KHz Under Voltage Lockout Threshold PSRR COUT = 1μF, IOUT = 10mA VUVLO VIN Rising Min 0.788 -- -- -- -- -- -- -- 1.2 -- -- -- -- 1.6 Typ Max 0.8 0.812 0.01 90 220 370 -- -- 0 -- -- 1 120 300 500 0.3 0.6 100 -- 0.4 Unit V μA μA mV % % nA V 100 −70 −50 1.8 -- -- -- 2 μVRMS dB V © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com 4 DS9065-P00 May 2012
    Parameter Symbol Test Conditions Under Voltage Lockout Hysteresis Current Limit Thermal Shutdown Threshold Hysteresis ΔVUVLO ILIM TSD ΔTSD RLOAD = 1Ω RT9065 Min 0.1 500 -- -- Typ Max Unit 0.15 650 165 30 -- -- -- -- V mA °C °C Note 1. Stresses beyond those listed “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 at TA = 25°C on a low effective thermal conductivity single-layer test board per JEDEC 51-3. Note 3. Devices are ESD sensitive. Handling precaution recommended. Note 4. The device is not guaranteed to function outside its operating conditions. © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS9065-P00 May 2012 www.richtek.com 5
    RT9065 Typical Application Circuit VIN CIN 1µF X7R Chip Enable RT9065 VIN VOUT 1 ADJ BP 3 EN GND 2 6 5 4 R1 R2 CBP 22nF VOUT COUT 1µF X7R © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com 6 DS9065-P00 May 2012
    Outline Dimension RT9065 H L C A D b e B A1 Symbol A A1 B b C D e H L Dimensions In Millimeters Dimensions In Inches Min 0.889 0.000 1.397 0.250 2.591 2.692 0.838 0.080 0.300 Max 1.295 0.152 1.803 0.560 2.997 3.099 1.041 0.254 0.610 Min 0.031 0.000 0.055 0.010 0.102 0.106 0.033 0.003 0.012 Max 0.051 0.006 0.071 0.022 0.118 0.122 0.041 0.010 0.024 SOT-23-6 Surface Mount Package Richtek Technology Corporation 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. 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. DS9065-P00 May 2012 www.richtek.com 7
    RT9065 Datasheet Revision History Version P00 Data Page No. 2012/5/25 Item Description first edition © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com 8 DS9065-P00 May 2012
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