RT9077-33GJ5

® RT9077 Low Power, 14V, 200mA LDO Regulator General Description Features The RT9077 is a low-dropout (LDO) voltage regulator with enable function offering benefits of up to 14V input voltage, low-dropout, low-power operation, and miniaturized packaging.      The features of low quiescent current and almost zero disable current is ideal for powering the battery equipment to a longer service life. The RT9077 is stable with ceramic output capacitors over its wide input range from 3.5V to 14V and entire range of output load current (0mA to 200mA).      Applications    Portable, Battery Powered Equipments Ultra Low Voltage Microcontrollers Notebook Computers Maximum Operating Input Voltage 14V ±2% Output Accuracy 200mA Output Current with EN μA Zero Disable Current Less than 0.1μ Dropout Voltage : 0.4V at 100mA Support Fixed Output Voltage 2.5V, 3.3V, 4.2V, 5V, 8V, 9V Stable with Ceramic or Tantalum Capacitor Current Limit Protection Over-Temperature Protection RoHS Compliant and Halogen Free Ordering Information RT9077- Package Type J5 : TSOT-23-5 Pin Configurations Lead Plating System G : Green (Halogen Free and Pb Free) (TOP VIEW) VOUT NC 5 4 2 Output Voltage 25 : 2.5V 33 : 3.3V 42 : 4.2V 50 : 5V 80 : 8V 3 VCC GND EN 90 : 9V TSOT-23-5 Note : Marking Information Richtek products are : For marking information, contact our sales representative directly or through a Richtek distributor located in your area.  RoHS compliant and compatible with the current require-  Suitable for use in SnPb or Pb-free soldering processes. ments of IPC/JEDEC J-STD-020. Simplified Application Circuit RT9077 EN EN VOUT VOUT VCC CIN COUT VCC GND Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9077-02 February 2016 is a registered trademark of Richtek Technology Corporation. www.richtek.com 1 RT9077 Pin Description Pin No. Pin Name Pin Function 1 VCC Supply Voltage Input. 2 GND Ground. 3 EN Enable Control Input. 4 NC No Internal Connection. 5 VOUT Output of the Regulator. Function Block Diagram VOUT VCC Current/Thermal Sense EN Bandgap Reference + - R1 R2 GND Operation Basic Operation Enable The RT9077 is a low quiescent current linear regulator designed especially for low external component systems. The input voltage range is from 3.5V to 14V. The RT9077 delivers the output power when it is set to enable state. When it works in disable state, there is almost no output power and the operation quiescent current is less than 0.1μA (typ.). 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 RT9077 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 © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 2 Current Limit Protection The RT9077 provides current limit function to prevent the device from damages during over-load or shorted-circuit conditions. This current is detected by an internal sensing transistor. Over-Temperature Protection The over-temperature protection function turns off the PMOSFET when the junction temperature exceeds 150°C (typ.) and the output current exceeds 30mA. Once the junction temperature cools down by approximately 150°C, the regulator automatically resumes operation. is a registered trademark of Richtek Technology Corporation. DS9077-02 February 2016 RT9077 Absolute Maximum Ratings          (Note 1) VCC, EN to GND -----------------------------------------------------------------------------------------------------------VOUT to GND RT9077-90 -------------------------------------------------------------------------------------------------------------------RT9077-25/ RT9077-33/ RT9077-50 -----------------------------------------------------------------------------------VOUT to VCC --------------------------------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25°C TSOT-23-5 -------------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 2) TSOT-23-5, θJA -------------------------------------------------------------------------------------------------------------Junction Temperature -----------------------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------Storage Temperature Range --------------------------------------------------------------------------------------------ESD Susceptibility (Note 3) HBM (Human Body Model) ----------------------------------------------------------------------------------------------- Recommended Operating Conditions    −0.3V to 15V −0.3V to 15V −0.3V to 6V −15V to 0.3V 0.43W 230.6°C/W 150°C 260°C −60°C to 150°C 2kV (Note 4) Supply Input Voltage ------------------------------------------------------------------------------------------------------- 3.5V to 14V Junction Temperature Range --------------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range --------------------------------------------------------------------------------------------- −40°C to 85°C Electrical Characteristics (VOUT + 1 < VCC < 14V, TA = 25°C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Supply Voltage VCC 3.5 -- 14 V Output Voltage Range VOUT 2.5 -- 12 V DC Output Accuracy VOUT ILOAD = 1mA 2 -- 2 % 0.4 1.2 V VDROP -- -- 1.5 V VCC Consumption Current IQ ILOAD = 100mA, VCC > 4.5V ILOAD = 100mA, VCC > 3.5V and < 4.5V ILOAD = 20mA -- Dropout Voltage -- 70 100 A Shutdown GND Current VEN = 0V -- 0.1 1 A Shutdown Leakage Current VEN = 0V, VOUT = 0V -- 0.1 1 A VEN = 14V -- 0.1 -- A ILOAD = 1mA, 5.5V < VCC < 14V -- -- 0.4 % ILOAD = 1mA, 3.5V < VCC < 5.5V -- 0.1 0.3 % -- 0.5 1 % 210 350 490 mA EN Input Current IEN Line Regulation VLINE Load Regulation VLOAD 1mA < ILOAD < 200mA Output Current Limit ILIM VOUT = 0.5 x VOUT(normal) Enable Input Voltage Logic-High VIH -- -- 2 Logic-Low VIL 0.6 -- -- -- 150 -- °C -- 20 -- °C Thermal Shutdown Temperature TSD Thermal Shutdown Hysteresis TSD ILOAD = 30mA Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9077-02 February 2016 V is a registered trademark of Richtek Technology Corporation. www.richtek.com 3 RT9077 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 RT9077 EN VIN 3.5V to 14V EN VOUT CIN 1µF VCC Copyright © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 4 VOUT COUT (Effective Capacitance  1µF) GND is a registered trademark of Richtek Technology Corporation. DS9077-02 February 2016 RT9077 Typical Operating Characteristics Output Voltage vs. Output Current 3.30 3.28 3.28 Output Voltage (V) Output Voltage (V) Output Voltage vs. Temperature 3.30 ILOAD = 20mA ILOAD = 0.1mA 3.26 3.24 3.22 VCC = 4.3V 3.26 VCC = 14V 3.24 3.22 VCC = 4.3V, VOUT = 3.3V 3.20 VOUT = 3.3V 3.20 -50 -25 0 25 50 75 100 125 0 20 40 Temperature (°C) 80 100 120 140 160 180 200 Output Current (mA) Output Voltage vs. Input Voltage Quiescent Current vs. Temperature 120 3.30 ILOAD = ILOAD = ILOAD = ILOAD = 3.28 3.26 0mA 0.1mA 10mA 20mA Quiescent Current (μA) Output Voltage (V) 60 3.24 3.22 4 5 6 7 8 9 10 11 12 13 80 60 40 20 VCC = 4V, VOUT = 3.3V, ILOAD = 20mA VOUT = 3.3V 3.20 100 0 -50 14 -25 0 25 50 75 100 125 Temperature (°C) Input Voltage (V) SHDN Input Leakage Current vs. Input Voltage Quiescent Current vs. Input Voltage 81.5 20 Shutdown Current (nA) Quiescent Curren (μA) 71.5 61.5 51.5 41.5 31.5 21.5 16 12 8 4 11.5 VOUT = 3.3V, ILOAD = 20mA 1.5 EN = 0V 0 4 5 6 7 8 9 10 11 12 13 Input Voltage (V) Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9077-02 February 2016 14 4 6 8 10 12 14 Input Voltage (V) is a registered trademark of Richtek Technology Corporation. www.richtek.com 5 RT9077 EN Voltage vs. Input Voltage 1.0 2.0 0.8 1.6 0.6 VCC = 14V VCC = 4.3V 0.4 High Threshold EN Voltage (V) Shutdown Leakage Current (μA)1 SHDN Input Leakage Current vs. Temperature 1.2 Low Threshold 0.8 0.4 0.2 EN = 0V 0.0 0.0 -50 -25 0 25 50 75 100 4 125 6 8 Temperature (°C) EN Voltage vs. Temperature 12 0.5 Dropout Voltage (V) 1.6 High Threshold 1.2 0.8 Low Threshold 0.4 0.4 0.3 0.2 0.1 VCC = 14V 0.0 ILOAD = 50mA 0 -50 -25 0 25 50 75 100 125 -50 Input Voltage (V) -25 0 25 50 75 100 125 Temperature (°C) PSRR vs. Frequency Current Limit vs. Temperature 0 450 VCC = 4.3V 400 350 -20 300 VCC = 14V 250 200 150 PSRR (dB) Current Limit (A) 14 Dropout Voltage vs. Temperature 2.0 EN Voltage (V) 10 Input Voltage (V) -40 -60 100 50 VOUT = 3.3V 0 -50 -25 0 25 50 75 100 Temperature ( °C ) Copyright © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 6 125 VCC = 4.3V, VOUT = 3.3V, ILOAD = 100mA -80 10 100 1000 10000 Frequency (Hz) is a registered trademark of Richtek Technology Corporation. DS9077-02 February 2016 RT9077 Load Transient Response Load Transient Response VOUT_ac (100mV/Div) VOUT_ac (50mV/Div) I LOAD (50mA/Div) VCC = 12V, VOUT = 3.3V, ILOAD = 10mA to 100mA I LOAD (100mA/Div) VCC = 4.3V, VOUT = 3.3V, ILOAD = 10mA to 150mA Time (500μs/Div) Time (250μs/Div) Line Transient Response Power On from EN V CC (10V/Div) EN (2V/Div) VIN (5V/Div) VOUT (2V/Div) VOUT_ac (20mV/Div) VCC = 6V to 12V, VOUT = 3.3V, ILOAD = 100mA Time (250μs/Div) I LOAD (100mA/Div) VCC = 12V, VOUT = 3.3V, ILOAD = 100mA Time (25μs/Div) Power Off from EN V CC (10V/Div) EN (2V/Div) VOUT (2V/Div) I LOAD (100mA/Div) VCC = 12V, VOUT = 3.3V, ILOAD = 100mA Time (25μs/Div) Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9077-02 February 2016 is a registered trademark of Richtek Technology Corporation. www.richtek.com 7 RT9077 Applications Information Enable The RT9077 goes into shutdown mode when the EN pin is in a logic low condition. During this condition, the RT9077 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 VCC to keep the part on. The Enable input is CMOS logic and cannot be left floating. Current Limit The RT9077 contains an independent current limiter, which monitors and controls the pass transistor's gate voltage, limiting the output current to 0.35A (typ.). The output can be shorted to ground indefinitely without damaging the part. 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 : For recommended operating condition specifications, the maximum junction temperature is 125°C. 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. 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 The maximum power dissipation depends on the operating ambient temperature for fixed T J(MAX) and thermal resistance, θJA. The derating curve in Figure 1 allows the designer to see the effect of rising ambient temperature on the maximum power dissipation. 1.0 Maximum Power Dissipation (W)1 Like any low dropout linear regulator, the RT9077'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. Any output capacitor meets 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. Four-Layer PCB 0.9 0.8 0.7 0.6 0.5 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. Copyright © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 8 is a registered trademark of Richtek Technology Corporation. DS9077-02 February 2016 RT9077 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 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. 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. DS9077-02 February 2016 www.richtek.com 9