® RT9064 Ultra Low Power, 14V, 200mA Low-Dropout Linear Regulator General Description Features The RT9064 is a low-dropout (LDO) linear regulator that features high input voltage, low dropout voltage, ultra-low operating current, and miniaturized packaging. With quiescent current as low as 2μA, the RT9064 is ideal for battery-powered equipment. z z z z z z The RT9064's stability requirements are easily met with all types of output capacitors, including tiny ceramic capacitors, over its wide input range (3.5V to 14V) and its load current range (0mA to 200mA). The RT9064 offers standard output voltages of 2.5V, 3.3V and 5V. z z z z z Pin Configurations 2μ μA Quiescent Current ±2% Output Accuracy 200mA Output Current 14V Maximum Operating Input Voltage Dropout Voltage : 0.4V at 100mA Fixed Output Voltage : 2.5V/3.3V/5V Stable with Ceramic or Tantalum Capacitor Current Limit Protection Over-Temperature Protection SOT-23-3, SOT-89-3 Packages RoHS Compliant and Halogen Free Applications (TOP VIEW) z GND z Portable, Battery Powered Equipment Ultra Low Power Microcontrollers 3 Ordering and Marking Information 2 VCC VOUT Part Number SOT-23-3 RT9064-25GV VCC 2 0D= SOT-23-3 (N) 30= RT9064-25GX SOT-89-3 04= RT9064-33GV SOT-23-3 0E= SOT-23-3 (N) 2Z= RT9064-33GX SOT-89-3 05= RT9064-50GV SOT-23-3 0F= SOT-23-3 (N) 2Y= SOT-89-3 06= RT9064-33GVN VOUT SOT-23-3 (N-Type) RT9064-50GVN VCC 2 3 GND VOUT Marking Information Package SOT-23-3 RT9064-25GVN 3 GND Output Voltage RT9064-50GX 2.5V 3.3V 5.0V SOT-89-3 Simplified Application Circuit RT9064 VCC VOUT VCC CIN Copyright © 2013 Richtek Technology Corporation. All rights reserved. DS9064-00 June 2013 GND VOUT COUT is a registered trademark of Richtek Technology Corporation. www.richtek.com 1 RT9064 Functional Pin Description Pin No. Pin Name Pin Function SOT-23-3 SOT-23-3 (N-Type) SOT-89-3 1 3 1 VCC Supply Voltage Input. 2 2 3 VOUT Output of the Regulator. 3 1 2 GND Ground. Function Block Diagram VOUT VCC OCP GND Bandgap Reference + OTP R1 - R2 Operation The RT9064 is a high input voltage linear regulator specifically designed to minimize external components. Output Transistor The RT9064 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 The RT9064 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 30mA. Once the junction temperature cools down by approximately 20°C, the regulator will automatically resume operation. is a registered trademark of Richtek Technology Corporation. DS9064-00 June 2013 RT9064 Absolute Maximum Ratings z z z z z z z z z (Note 1) VCC to GND ----------------------------------------------------------------------------------------------------------------VOUT to VCC --------------------------------------------------------------------------------------------------------------VOUT to GND --------------------------------------------------------------------------------------------------------------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 15V −14V to 0.3V −0.3V to 6V 0.41W 0.59W 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 14V Junction Temperature Range --------------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range --------------------------------------------------------------------------------------------- −40°C to 85°C Electrical Characteristics ((VOUT + 1V) < VCC < 14V, TA = 25°C, unless otherwise specified.) Parameter Output Voltage Range Symbol Min Typ Max Unit 2.5 -- 5 V ILOAD = 1mA, VCC = VOUT + 0.5V −2 -- 2 % ILOAD = 100mA, VOUT ≥ 4.5V -- 0.4 1.2 ILOAD =100mA, VOUT < 4.5V -- -- 1.5 VCC = 5V, ILOAD = 0A -- 2 4 ILOAD = 1mA, 3.5V ≤ VCC < 5.5V -- 0.1 0.2 ILOAD = 1mA, 5.5V ≤ VCC ≤ 14V -- 0.1 0.3 -- 0.5 1 % 240 320 400 mA f = 100Hz, ILOAD = 100mA -- −60 -- f = 10kHz, ILOAD = 100mA -- −40 -- VOUT DC Output Accuracy Dropout Voltage Test Conditions VDrop V μA Quiescent Current IQ Line Regulation VLINE Load Regulation VLOAD ILOAD = 1mA to 200mA Output Current Limit ILIM VOUT = 0.5 x VOUT(Normal) , VCC = 5V Power Supply Rejection Ratio PSRR Output Noise Voltage VON BW = 10Hz to 100kHz , COUT = 1μF -- 27 x VOUT -- μVRMS Startup Time tSTR VOUT = 3V, RL = 30Ω -- 500 -- μs OTP Threshold -- 150 -- °C OTP Hysteresis -- 20 -- °C Copyright © 2013 Richtek Technology Corporation. All rights reserved. DS9064-00 June 2013 % dB is a registered trademark of Richtek Technology Corporation. www.richtek.com 3 RT9064 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 VCC CIN 1µF RT9064 VCC VOUT Copyright © 2013 Richtek Technology Corporation. All rights reserved. www.richtek.com 4 GND COUT 1µF VOUT is a registered trademark of Richtek Technology Corporation. DS9064-00 June 2013 RT9064 Typical Operating Characteristics Output Voltage vs. Temperature Output Voltage vs. Output Current 2.52 2.52 VCC = 12V, ILOAD = 0.1mA VCC = 12V, ILOAD = 20mA VCC = 12V, ILOAD = 50mA 2.51 Output Voltage (V) Output Voltage (V) 2.51 2.50 2.49 2.48 VCC = 5V, ILOAD = 0.1mA VCC = 5V, ILOAD = 20mA VCC = 5V, ILOAD = 50mA 2.47 VCC = 5V 2.50 2.49 VCC = 12V 2.48 2.47 VOUT = 2.5V VOUT = 2.5V 2.46 2.46 -50 -25 0 25 50 75 100 125 0 20 Temperature (°C) 60 80 100 120 140 160 180 200 Output Current (mA) Output Voltage vs. Input Voltage Quiescent Current vs. Temperature 2.52 2.80 Quiescent Current (µA) 2.51 Output Voltage (V) 40 2.50 ILOAD = 0mA ILOAD = 0.1mA ILOAD = 10mA ILOAD = 20mA ILOAD = 50mA 2.49 2.48 2.47 2.54 2.28 VCC = 5V 2.02 VCC = 12V 1.76 VOUT = 2.5V VCC = 5V to 13.2V, VOUT = 2.5V 2.46 1.50 5 6 7 8 9 10 11 12 13 14 -50 -25 0 Input Voltage (V) Quiescent Current vs. Input Voltage 50 75 100 125 Dropout Voltage vs. Temperature 2.16 0.40 2.14 0.35 VOUT = 5V Dropout Voltage (V) Quiescent Current (µA) 25 Temperature (°C) 2.12 2.10 2.08 2.06 VOUT = 2.5V 0.30 0.25 0.20 2.04 0.15 2.02 0.10 VCC = 5V, VOUT = 2.5V, ILOAD = 50mA 5 6 7 8 9 10 11 12 13 Input Voltage (V) Copyright © 2013 Richtek Technology Corporation. All rights reserved. DS9064-00 June 2013 14 -50 -25 0 25 50 75 100 125 Temperature (°C) is a registered trademark of Richtek Technology Corporation. www.richtek.com 5 RT9064 Current Limit vs. Temperature PSRR vs. Frequency 0.5 0 VCC = 12V, VOUT = 5V VCC = 12V, VOUT = 2.5V, ILOAD = 100mA -20 PSRR (dB) Current Limit (A) 0.4 0.3 0.2 -40 -60 0.1 0.0 -80 -50 -25 0 25 50 75 100 125 10 1000 100000 Temperature (°C) Frequency (Hz) Load Transient Response Line Transient Response VOUT (50mV/Div) V CC (5V/Div) I LOAD (100mA/Div) VOUT (20mV/Div) VCC = 12V, VOUT = 2.5V, ILOAD = 10mA to 100mA VCC = 6V to 12V, VOUT = 2.5V, ILOAD = 100mA Time (500μs/Div) Time (250μs/Div) Ground Current vs. Load Current Power Up Response 200 Ground Current (µA) VCC = 12V, VOUT = 2.5V V CC (10V/Div) 150 100 Rising, TA = 125°C Rising, TA = 25°C Rising, TA = −40°C VOUT (1V/Div) 50 I LOAD (50mA/Div) 0 0.001 0.01 0.1 1 10 100 1000 VCC = 12V, VOUT = 2.5V, ILOAD = 100mA 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. DS9064-00 June 2013 RT9064 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 : 1.0 Maximum Power Dissipation (W)1 Like any low dropout linear regulator, the RT9064'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 0.8 SOT-89-3 0.6 SOT-23-3 0.4 0.2 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) = 0.59W 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. DS9064-00 June 2013 is a registered trademark of Richtek Technology Corporation. www.richtek.com 7 RT9064 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. DS9064-00 June 2013 RT9064 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. DS9064-00 June 2013 www.richtek.com 9