MP2002DD-LF-Z

MP2002 Low Input Voltage 500mA Linear Regulator NOT RECOMMENDED FOR NEW DESIGNS DESCRIPTION FEATURES The MP2002 is a low-current, low-dropout linear regulator operating over a single input supply between 1.35V to 6.5V. The output voltage of the MP2002 is adjustable via an external resistor divider. The MP2002 can supply up to 500mA of load current. The enable pin (EN) allows the part to be put into a low current shutdown mode (EN=0). The MP2002 features thermal overload and current limit protection. It is available in an 8-pin QFN (2 x 3mm) package             Power Good Open Collector Output Operates from 1.35V – 6.5V Input Low 300mV Dropout at 500mA Output Stable with Very Small Ceramic Capacitors 2% Feedback Reference Adjustable Output Voltage Option from 0.5V to 5V using an External Resistor Divider Better Than 0.001%/mA Load Regulation Low 100μA Ground Current Internal Thermal Protection Current Limit Protection 6µA Typical Quiescent Current at Shutdown Available in a Tiny 2 x 3mm 8-pin QFN Package APPLICATIONS    Low Current Regulators Battery Powered Systems Cellular Phones For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 1 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS ORDERING INFORMATION Part Number* MP2002DD Package QFN8 (2 x 3mm) Top Marking Free Air Temperature (TA) L7 -40C to +85C * For Tape & Reel, add suffix –Z (eg. MP2002DD–Z) For RoHS Compliant Packaging, add suffix –LF (eg. MP2002DD–LF–Z) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS (1) IN, PG, FB to GND..........................-0.3V to +7V EN to GND ............................. -0.3V to VIN +0.3V OUT ...................................... -0.3V to VIN + 0.3V Continuous Power Dissipation (TA = +25°C)(2) ……………………………………………….2.27W Junction Temperature ...............................150C Lead Temperature ....................................260C Storage Temperature .............. -65°C to +150C Recommended Operating Conditions (3) Input Voltage VIN ........................... 1.35V to 6.5V Output Voltage ................................... 0.5V to 5V Load Current ........................... 500mA Maximum Maximum Junction Temp. (TJ) ............... +125C MP2002 Rev. 1.11 10/10/2011 Thermal Resistance (4) θJA θJC QFN8 (2 x 3mm) ..................... 55 ...... 12 ... C/W Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ(MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD(MAX)=(TJ(MAX)TA)/ θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7 4-layer board. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 2 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS ELECTRICAL CHARACTERISTICS VIN = 1.8V, VOUT = 1.2V, COUT = 4.7µF, CIN = 2.2µF, TA = +25C, unless otherwise noted. Parameter Operating Voltage Ground Pin Current Shutdown Current Symbol Condition IOUT = 1mA IOUT = 1mA (7) IOUT = 500mA VEN = 1.45V, VIN = 5V FB Regulation Voltage –40C  TA  +85C IOUT = 500mA IOUT = 1mA, VIN = (VOUT + 0.5V) to 6.5V (8) IOUT = 1mA to 500mA, VIN = VOUT + 0.5V Dropout Voltage (8) Line Regulation Load Regulation Power Good Output Voltage Low(9) EN Input High Voltage EN Input Low Voltage EN Input Bias Current Thermal Protection Current Limit VOL Min 1.35 0.482 0.477 Isink = 0.5mA Typ (5) 100 5 7 0.500 0.495 290 Max 6.5 0.508 0.513 550 V mV 0.005 %/V 0.001 %/mA 0.5 V 1.2 VEN = 1.5V, 5V Units V µA mA µA 0.01 155 730 0.4 1 V V μA C mA Notes: 5) Parameter is guaranteed by design, not production tested. 6) Resistors for VOUT measurement are 10k, 14k, 1% 7) The ground current does not include current through feedback current 8) Dropout Voltage is defined as the input to output differential when the output voltage drops 1% below its nominal value 9) VFEEDBACK is 90% of the regulated value with 10k pull-up to 5V MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 3 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS TYPICAL PERFORMANCE CHARACTERISTICS C1=2.2μF, C2 =4.7μF, C3=1nF, TA = +25C, unless otherwise noted. (Reference Figure 2) MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 4 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS TYPICAL PERFORMANCE CHARACTERISTICS C1=2.2μF, C2 =4.7μF, C3=1nF, TA = +25C, unless otherwise noted. (Reference Figure 2) MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 5 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS TYPICAL PERFORMANCE CHARACTERISTICS C1=2.2μF, C2 =4.7μF, C3=1nF, TA = +25C, unless otherwise noted. (Reference Figure 2) MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 6 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS PIN FUNCTIONS Pin # Name 1 OUT 2 3 NC PG 4 FB 5 EN 7 GND, Exposed pad NC 8 IN 6 Description Regulator Output. OUT is the output of the linear regulator. Bypass OUT to GND with a 4.7μF or greater capacitor. No connect. Power Good Open Collector Output Feedback Input. Connect a resistive voltage divider from OUT to FB to set the output voltage. OUT feedback threshold is 0.5V. Enable Input. Drive EN higher than 1.2V to turn on the MP2002, drive EN lower than 0.4V to turn it off. Ground. Exposed pad must be connected to GND plane. No connect. Power Source Input. IN supplies the internal power to the MP2002 and is the source of the pass transistor. Bypass IN to GND with a 2.2μF or greater capacitor. OPERATION The MP2002 is a low-current, low-voltage, highPSRR, low-dropout, linear regulator. It is intended for use in devices that require very low voltage, low quiescent current power and high PSRR such as wireless modems, pagers, and cellular phones. The MP2002 uses a PNP pass element and features internal thermal shutdown and an internal current limit circuit. Figure 1—Block Diagram of Ultra Low Noise Adjustable Output Regulator MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 7 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS APPLICATION INFORMATION Setting the Output Voltage The MP2002 has an adjustable output voltage, set via an external resistor divider (R1 and R2 in Figure 2). V  VFB R1  R2   OUT VFB     where VFB = 0.5V (The OUT feedback threshold voltage.) Example: For 2.5V Output and R2=10kΩ  2.5  0.5  R1  10k     40k  0.5  A standard 40kΩ (1%) resistor can be selected for R1. Table 1 lists the selected R1 values for some typical output voltages (assuming R2 = 10kΩ). Power Good The power good pin is an open collector output completed with a pull up resistor (10kΩ recommended). The pull up resistor can be tied to a supply within the voltage range of the pin (0V to 5.5V). For example, the pull up resistor can be tied to the input voltage when it is being monitored by an IC powered from this input voltage. It monitors the output voltage, and if the output voltage is 10% below its regulation point, the PG pin becomes low. MP2002 Rev. 1.11 10/10/2011 Table 1—Adjustable Output Voltage R1 Values (R2=10kΩ) VOUT (V) R1 (Ω) 1.25 15k 1.5 20k 1.8 26k 2 30k 2.5 40k 2.8 46k 3 50k 3.3 56k 4 70k 5 90k Bypass Capacitors For lower noise, the reference voltage can be bypassed by an external capacitor. A low ESR capacitor, such as the ceramic type, will provide the best performance. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 8 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR PCB Layout Guide PCB layout is very important to achieve good regulation, ripple rejection, transient response and thermal performance. It is highly recommended to duplicate EVB layout for optimum performance. If change is necessary, please follow these guidelines and take Figure 2 for reference. C2 OUT R1 R3 NOT RECOMMENDED FOR NEW DESIGNS 1) Input and output bypass ceramic capacitors are suggested to be put close to the IN Pin and OUT Pin respectively. 2) Ensure all feedback connections are short and direct. Place the feedback resistors and compensation components as close to the chip as possible. 3) Connect IN, OUT and especially GND respectively to a large copper area to cool the chip to improve thermal performance and long-term reliability. IN C3 OUT 1 8 NC 2 7 NC PG 3 6 GND FB 4 5 EN R2 IN C1 GND Top Layer Bottom Layer Figure 2—PCB Layout MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 9 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS TYPICAL APPLICATION CIRCUIT Figure 3—Typical Application Circuit with Fix Pinout MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 10 MP2002 – LOW INPUT VOLTAGE, 500mA LINEAR REGULATOR NOT RECOMMENDED FOR NEW DESIGNS PACKAGE INFORMATION QFN8 (2mm x 3mm) NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP2002 Rev. 1.11 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 11