® RT9058 36V, 2μ μA IQ, 100mA Low Dropout Voltage Linear Regulator General Description Features The RT9058 is a low dropout (LDO) linear voltage regulator that features high input voltage, low dropout voltage, ultralow operating current, and miniaturized packaging. With quiescent current as low as 2μA, the RT9058 is ideal for battery-powered equipment. z z z z z The RT9058's stability requirements are easily met with all types of output capacitors, including tiny ceramic capacitors, over its wide input range (3.5V to 36V) and its load current range (0mA to 100mA). The RT9058 offers standard output voltages of 2.5V, 3V, 3.3V, 5V, 6V, 9V and 12V. z z z z z z Applications z z z 2μ μA Quiescent Current ±2% Output Accuracy 100mA Output Current 3.5V to 36V Input Voltage Range Dropout Voltage : 0.35V at 10mA/VCC 5V 0.5V at 10mA/VCC 3.5V Fixed Output Voltage : 2.5V, 3V, 3.3V, 5V, 6V, 9V, 12V Stable with Ceramic or Tantalum Capacitors Current Limit Protection Over Temperature Protection SOT-23-3, SOT-89-3 Packages RoHS Compliant and Halogen Free Portable, Battery Powered Equipment Ultra Low Power Microcontrollers Notebook Computers Pin Configurations (TOP VIEW) GND VCC 3 3 2 VCC 2 3 GND VOUT 2 GND VOUT SOT-23-3 VOUT VCC SOT-23-3 (L-Type) SOT-89-3 Functional Pin Description SOT-23-3 Pin No. SOT-23-3 (L-Type) SOT-89-3 1 3 1 VCC Supply Voltage Input. 2 2 3 VOUT Output of the Regulator. 3 1 2 GND Ground. Pin Name Pin Function Simplified Application Circuit RT9058 VCC VCC VOUT VOUT GND Copyright © 2013 Richtek Technology Corporation. All rights reserved. DS9058-00 April 2013 is a registered trademark of Richtek Technology Corporation. www.richtek.com 1 RT9058 Ordering and Marking Information Part Number Output Voltage RT9058-25GV Package Marking Information Part Number SOT-23-3 00= RT9058-60GV SOT-23-3 (L) 2A= RT9058-60GVL RT9058-25GX SOT-89-3 00= RT9058-30GV SOT-23-3 Output Voltage Package Marking Information SOT-23-3 0R= SOT-23-3 (L) 2D= RT9058-60GX SOT-89-3 0D= 2H= RT9058-90GV SOT-23-3 0N= SOT-23-3 (L) 2G= RT9058-90GVL SOT-23-3 (L) 2E= RT9058-30GX SOT-89-3 10= RT9058-90GX SOT-89-3 0C= RT9058-33GV SOT-23-3 03= RT9058-C0GV SOT-23-3 0M= SOT-23-3 (L) 2B= RT9058-C0GVL SOT-23-3 (L) 2F= RT9058-33GX SOT-89-3 01= RT9058-C0GX SOT-89-3 0B= RT9058-50GV SOT-23-3 06= SOT-23-3 (L) 2C= SOT-89-3 02= RT9058-25GVL RT9058-30GVL RT9058-33GVL RT9058-50GVL RT9058-50GX 2.5V 3.0V 3.3V 5.0V 6.0V 9.0V 12.0V Function Block Diagram VOUT VCC OCP GND Bandgap Reference R1 - + OTP R2 Operation The RT9058 is a high input voltage linear regulator specifically designed to minimize external components. The input voltage range is from 3.5V to 36V. Output Transistor The RT9058 includes a built-in low on-resistance P-MOSFET output transistor for low dropout voltage applications. Error Amplifier The Error Amplifier compares the output feedback voltage from an internal feedback voltage divider to an internal reference voltage and controls the P-MOSFET's gate voltage to maintain output voltage regulation. Copyright © 2013 Richtek Technology Corporation. All rights reserved. www.richtek.com 2 Current Limit Protection The RT9058 provides a current limit function to prevent damage during output over-load or shorted-circuit conditions. The output current is detected by an internal sensing transistor. Over Temperature Protection The over temperature protection function will turn off the P-MOSFET when the internal junction temperature exceeds 150°C (typ.) and the output current exceeds 4mA. Once the junction temperature cools down by approximately 20°C, the regulator will automatically resume operation. is a registered trademark of Richtek Technology Corporation. DS9058-00 April 2013 RT9058 Absolute Maximum Ratings z z z z z z z z z (Note 1) VCC to GND --------------------------------------------------------------------------------------------------------------VOUT to GND RT9058-C0/RT9058-60/RT9058-90 ----------------------------------------------------------------------------------RT9058-25/RT9058-30/RT9058-33/RT9058-50 --------------------------------------------------------------------VOUT to VCC ------------------------------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25°C SOT-23-3 ------------------------------------------------------------------------------------------------------------------SOT-89-3 ------------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 2) SOT-23-3, θJA -------------------------------------------------------------------------------------------------------------SOT-89-3, θJA -------------------------------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) -----------------------------------------------------------------------------Junction Temperature ---------------------------------------------------------------------------------------------------Storage Temperature Range ------------------------------------------------------------------------------------------ESD Susceptibility (Note 3) HBM (Human Body Model) --------------------------------------------------------------------------------------------MM (Machine Model) ---------------------------------------------------------------------------------------------------- Recommended Operating Conditions z z z −0.3V to 40V −0.3V to 15V −0.3V to 6V −40V to 0.3V 0.41W 0.6W 243.3°C/W 167.7°C/W 260°C 150°C −65°C to 150°C 2kV 200V (Note 4) Supply Input Voltage, VCC --------------------------------------------------------------------------------------------- 3.5V to 36V Junction Temperature Range ------------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range ------------------------------------------------------------------------------------------- −40°C to 85°C Electrical Characteristics ((VOUT + 1V) < VCC < 36V, TA = 25°C, unless otherwise specified.) Parameter Symbol Test Conditions Output Voltage Range Min Typ Max Unit 2.5 -- 12 V DC Output Accuracy ILOAD = 10mA −2 -- 2 % Dropout Voltage ILOAD = 10mA -- 0.3 0.5 V ILOAD = 0mA, VOUT ≤ 5.5V, VCC = 12V -- 2 3.5 ILOAD = 0mA, VOUT > 5.5V, VCC = 12V -- 3.5 5 Line Regulation ILOAD = 10mA -- 0.2 0.5 % Load Regulation 0 < ILOAD < 50mA, VCC = V OUT + 2V −0.5 -- 0.5 % Output Current Limit VOUT = 0.5 x VOUT (normal) 115 175 300 mA f = 100Hz, IOUT = 25mA -- −70 -- f = 100kHz, IOUT = 25mA --- −40 -- COUT = 1μF -- 27 x VOUT -- μVRMS ILOAD = 30mA -- 150 -- °C -- 20 -- °C VCC Quiescent Current IQ Power Supply Rejection Rate PSRR Output Noise Voltage BW = 10Hz − 100kHz VON Thermal Shutdown Temperature Thermal Shutdown Hysteresis Copyright © 2013 Richtek Technology Corporation. All rights reserved. DS9058-00 April 2013 μA dB is a registered trademark of Richtek Technology Corporation. www.richtek.com 3 RT9058 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 high effective thermal conductivity four-layer test board per JEDEC 51-7. Note 3. Devices are ESD sensitive. Handling precaution is recommended. Note 4. The device is not guaranteed to function outside its operating conditions. Typical Application Circuit RT9058 VCC VCC VOUT 1µF 1µF VOUT GND Copyright © 2013 Richtek Technology Corporation. All rights reserved. www.richtek.com 4 is a registered trademark of Richtek Technology Corporation. DS9058-00 April 2013 RT9058 Typical Operating Characteristics Output Voltage vs. Temperature Output Voltage vs. Output Current 3.35 3.38 3.34 3.36 Output Voltage (V) Output Voltage (V) 3.33 3.32 3.31 Load Load Load Load 3.30 3.29 = 0mA = 10mA = 20mA = 50mA 3.28 3.27 3.34 3.32 3.30 VCC = 36V 3.28 VCC = 24V 3.26 3.24 3.26 VCC = 12V, VOUT = 3.3V 3.25 VOUT = 3.3V 3.22 -50 -25 0 25 50 75 100 125 0 10 Temperature (°C) Output Voltage vs. Input Voltage 30 40 50 60 70 80 90 100 Dropout Voltage vs. Temperature 2.2 Dropout Voltage (V) Output Voltage (V) 20 Output Current (mA) 3.40 3.35 Load Load Load Load 3.30 = 0mA = 10mA = 20mA = 50mA 3.25 1.8 1.3 Load = 50mA 0.9 Load = 20mA 0.4 Load = 10mA VOUT = 3.3V VCC = 5V to 36V, VOUT = 3.3V 0.0 3.20 4 8 12 16 20 24 28 32 -50 36 -25 0 25 50 75 100 125 Temperature (°C) Input Voltage (V) Quiescent Current vs. Input Voltage Quiescent Current vs. Temperature 3.0 3.0 2.5 Quiescent Current (µA) Quiescent Current (µA) VCC = 12V 2.0 1.5 1.0 0.5 2.5 VCC = 24V VCC = 36V VCC = 12V 2.0 1.5 VOUT = 3.3V VCC = 4V to 36V, VOUT = 3.3V 1.0 0.0 4 8 12 16 20 24 28 32 Input Voltage (V) Copyright © 2013 Richtek Technology Corporation. All rights reserved. DS9058-00 April 2013 36 -50 -25 0 25 50 75 100 125 Temperature (°C) is a registered trademark of Richtek Technology Corporation. www.richtek.com 5 RT9058 PSRR 0 270 -10 240 -20 210 -30 PSRR (dB) Output Current Limit (mA) Output Current Limit vs. Temperature 300 VCC = 24V VCC = 36V VCC = 12V 180 150 120 -40 -50 -60 90 -70 60 -80 30 VOUT = 3.3V 0 -50 -25 0 25 50 75 100 125 IOUT = 25mA -90 IOUT = 10mA 10 Load Transient Response 1000 10000 100000 Line Transient Response IOUT (50mA/Div) V CC (5V/Div) VOUT (50mV/Div) VOUT (10mV/Div) VCC = 10V to 14V, VOUT = 3.3V, IOUT = 100mA VCC = 12V, VOUT = 3.3V, IOUT = 1mA to 50mA Ground Current (μA) 100 Frequency (Hz) Temperature (°C) 200 VCC = 12V, VOUT = 3.3V -100 Time (25ms/Div) Time (100μs/Div) Ground Current vs. Load Current Power Up Response VCC = 12V, VOUT = 3.3V Rising, TA = 125°C Falling, TA = 125°C Rising, TA = 25°C Falling, TA = 25°C Rising, TA = −40°C Falling, TA = −40°C 150 100 VIN (10V/Div) VOUT (2V/Div) 50 IOUT (50mA/Div) 0 0.001 0.01 0.1 1 10 100 1000 VIN = 12V, VOUT = 3.3V, IOUT = 50mA Time (25μs/Div) Load Current (mA) Copyright © 2013 Richtek Technology Corporation. All rights reserved. www.richtek.com 6 is a registered trademark of Richtek Technology Corporation. DS9058-00 April 2013 RT9058 Applications Information Any output capacitor meeting the minimum 1mΩ ESR (Equivalent Series Resistance) 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. Thermal Considerations For continuous operation, do not exceed absolute the maximum junction temperature. The maximum power dissipation depends on the thermal resistance of the IC package, PCB layout, rate of surrounding airflow, and the allowed difference between the junction and ambient temperatures. The maximum power dissipation can be calculated by the following formula : 0.7 Maximum Power Dissipation (W)1 Like any low dropout linear regulator, the RT9058'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 VCC and GND pins. Four-Layer PCB SOT-89-3 0.6 0.5 SOT-23-3 0.4 0.3 0.2 0.1 0.0 0 25 50 75 100 125 Ambient Temperature (°C) Figure 1. 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. The recommended operating conditions specify a maximum junction temperature is 125°C. The junction to ambient thermal resistance, θJA, is layout dependent. On a standard JEDEC 51-7 four-layer thermal test board , the thermal resistance, θJA, of the SOT-23-3 package is 243.3°C/W. For the SOT-89-3 package, the θJA, is 167.7°C/W. The maximum power dissipation at TA = 25°C can be calculated by the following formula : PD(MAX) = (125°C − 25°C) / (243.3°C/W) = 0.41W for SOT-23-3 package PD(MAX) = (125°C − 25°C) / (167.7°C/W) = 0.6W for SOT-89-3 package For a fixed T J(MAX) of 125°C, the maximum power dissipation depends on the operating ambient temperature and the package's thermal resistance, θJA. The derating curve in Figure 1 shows the effect of rising ambient temperature on the maximum recommended power dissipation. Copyright © 2013 Richtek Technology Corporation. All rights reserved. DS9058-00 April 2013 is a registered trademark of Richtek Technology Corporation. www.richtek.com 7 RT9058 Outline Dimension H D L C B e A A1 b Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.889 1.295 0.035 0.051 A1 0.000 0.152 0.000 0.006 B 1.397 1.803 0.055 0.071 b 0.356 0.508 0.014 0.020 C 2.591 2.997 0.102 0.118 D 2.692 3.099 0.106 0.122 e 1.803 2.007 0.071 0.079 H 0.080 0.254 0.003 0.010 L 0.300 0.610 0.012 0.024 SOT-23-3 Surface Mount Package Copyright © 2013 Richtek Technology Corporation. All rights reserved. www.richtek.com 8 is a registered trademark of Richtek Technology Corporation. DS9058-00 April 2013 RT9058 D D1 A B C C1 e e H A b b1 b Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 1.397 1.600 0.055 0.063 b 0.356 0.483 0.014 0.019 B 2.388 2.591 0.094 0.102 b1 0.406 0.533 0.016 0.021 C 3.937 4.242 0.155 0.167 C1 0.787 1.194 0.031 0.047 D 4.394 4.597 0.173 0.181 D1 1.397 1.753 0.055 0.069 e 1.448 1.549 0.057 0.061 H 0.356 0.432 0.014 0.017 3-Lead SOT-89 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. DS9058-00 April 2013 www.richtek.com 9