MP2030 3A Dual Supply Very Low Dropout Linear Regulator The Future of Analog IC Technology DESCRIPTION FEATURES • • • • • • • The MP2030 is a very low dropout, dual supply linear regulator. The use of two supplies allows the BIAS to control an NMOS device. The NMOS device supplies power to the load via the IN. In this way the input supply can be just above the desired output, yet still provide very good regulation performance due to the higher bias supply. The BIAS operates from a 2.5V to 5.5V input and regulates the output voltage to as low as 0.9V, and as high as 3.8V. • • • • • • The MP2030 can supply up to 3A of load current with a typical dropout voltage of 150mV. The BIAS runs the internal reference and drive circuitry, while the output current comes directly from the IN for high efficiency regulation. • The low bias current of 220uA makes the MP2030 ideal for use in battery-powered applications. The BIAS can be directly applied from the battery while IN is powered from the high efficiency buck regulator. This will reduce the output noise and decoupling capacitor. Wide 1.1V to 5.5V Input Voltage Range Stable with Very Small Ceramic Capacitors 150mV Dropout at 3A Output 2% Accurate Output Voltage Adjustable Output Range of 0.9V to 3.8V Low Noise: 80µVRMS (10Hz to 100kHz) PSRR o 32dB at 100kHz Better Than 0.001%/mA Load Regulation Stable With Low-ESR Output Capacitors Low 220uA Ground Current Internal Thermal Protection Current Limit Protection 0.1µA Typical Quiescent Current at Shutdown Power Good Indicator APPLICATIONS • • • • • Other features of MP2030 include thermal overload and current limit protection, power good indicator, stability with ultra low ESR ceramic capacitors as low as 1uF, and fast transient response. The MP2030 is available in 10-pin QFN (3mm x 3mm), and in QFN (5mm x 5mm) packages. Network, Telecom, Equipment: and Switches Servers, Storage Equipment Set-Top Box Post Regulation for Switch Mode Televisions Routers “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION U1 VIN 1 2 BIAS PGOOD GND EN MP2030 Rev. 0.91 10/10/2011 3 4 5 IN OUT IN OUT MP2030 10 1.8V/3A 9 VOUT GND 8 BIAS FB PG EN 7 GND BP 6 C6 10nF C8 1nF www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 1 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR ORDERING INFORMATION Part Number* Top Marking Free Air Temperature (TA) MP2030DQ* Package 3x3 QFN10 7D –40°C to +85°C MP2030DU** 5x5 QFN32 M2030DU –40°C to +85°C * For Tape & Reel, add suffix –Z (eg. MP2030DQ–Z). For RoHS compliant packaging, add suffix –LF (eg. MP2030DQ–LF–Z) ** For Tape & Reel, add suffix –Z (eg. MP2030DU–Z). For RoHS compliant packaging, add suffix –LF (eg. MP2030DU–LF–Z) PACKAGE REFERENCE TOP VIEW N/C N/C N/C N/C N/C N/C N/C N/C 32 TOP VIEW VIN 1 10 VOUT VIN 2 9 VOUT BIAS 3 8 FB PGOOD 4 7 EN GND 5 6 BYPASS EXPOSED PAD ON BACKSIDE 31 30 29 28 27 26 25 N/C 1 24 N/C VIN 2 23 VOUT VIN 3 22 VOUT VIN 4 21 VOUT VIN 5 20 VOUT BIAS 6 19 FB PGOOD 7 18 EN GND 8 17 BYPASS 9 10 11 12 13 14 15 16 N/C N/C N/C N/C N/C N/C N/C N/C EXPOSED PAD ON BACKSIDE 3x3 QFN10 ABSOLUTE MAXIMUM RATINGS (1) VBIAS, VIN to GND............................–0.3V to +6V FB, EN, to GND ..............................–0.3V to 6V VOUT ...............................–0.3V to VIN + 0.3 or 6V PGOOD ..................... –0.3V to VBIAS + 0.3 or 6V BYPASS ......................-0.3V to VBIAS +0.3 or 6V Junction Temperature ...............................150°C Lead Temperature ....................................260°C Storage Temperature ............. –65°C to +150°C Power Dissipation TA=70°C (QFN10 3 x 3) ............................ 1.3W TA=70°C (QFN32 5 x 5) ............................. 1.8W MP2030 Rev. 0.91 10/10/2011 5x5 QFN32 Recommended Operating Conditions (2) Input Voltage VIN ............................. 1.1V to 5.5V Input Voltage VBIAS .......................... 2.5V to 5.5V Output Voltage................................ 0.9V to 3.6V Load Current............................... 3.0A Maximum Operating Junct. Temp. ...........–40°C to +125°C Thermal Resistance (3) θJA θJC QFN10 3X3… ......................... 50……12 °C/W QFN32 5X5… ......................... 36….…8 °C/W Notes: 1) Exceeding these ratings may damage the device. 2) The device is not guaranteed to function outside of its operating conditions. 3) Measured on JESD51-7, 4-layer PCB. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 2 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR ELECTRICAL CHARACTERISTICS VIN = 1.5V, VBIAS = 3.6V, VOUT = 1.2V, COUT = 1µF, CIN = 0.1µF, TA = +25°C, unless otherwise noted. Parameter VIN Operating Voltage VBIAS Operating Voltage VBIAS Operating Current FB Regulation Voltage Symbol Condition –40°C ≤ TA ≤ +85°C IOUT = 3A, VBIAS = 3.6V IOUT = 1mA, VIN = 1.5 to 5V VBIAS = 3.6V VOUT = 1.2V IOUT = 1mA, VBIAS = 3.6V to 5.5V VOUT = 1.2V VIN = 1.5V IOUT = 1mA to 1A VIN > VOUT + 0.5V, COUT = 22μF, VIN(AC) = 100mV, f = 100KHz IOUT = 300mA Dropout Voltage VIN Line Regulation Min 1.1 2.5 0.490 0.485 Typ 220 0.500 0.500 150 Max 5.5 5.5 0.510 0.515 Units V V μA V mV 1 mV 2 mV 0.001 %/mA 32 dB Power Good Threshold 440 mV Power Good Delay 160 μs VBIAS Line Regulation Load Regulation PSRR (VIN) Soft Start BYPASS=open 550 μs Power Good Voltage Isink=230μA 0.39 V EN Input High Voltage EN Input Low Voltage EN Input Bias Current 1.5 VEN = 1.2V 0.8 +1 –1 V V μA Thermal Protection 135 °C Thermal Protection Hysteresis 15 °C MP2030 Rev. 0.91 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 3 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR PIN FUNCTIONS QFN3X3 10pins Pin # Name Description 9, 10 OUT Regulator Output. OUT is the output of the linear regulator, By pass OUT to GND with a 4.7µF or greater capacitor. 3 BIAS Bias Voltage. Bypass to ground with a 1uF or greater capacitor for maximum output current the VIN>0.2V+VOUT and VBIAS>2V+VOUT. 8 FB Feedback Input. Connect a resistive voltage divider from OUT to FB to set the output voltage. OUT feedback threshold is 0.5V. 7 EN Enable Input. Drive EN high to turn on the MP2030, drive EN low to turn it off. For automatic startup, connect EN to IN. 5 GND 1, 2 IN Ground, exposed pad. Power Source Input. IN supplies power to the load at the output (through the power transistor). Bypass IN to GND with a 1µF or greater capacitor. 4 PGOOD Open drain output. High indicated VOUT> 90% final value. 6 BYPASS Connect a 1nF to this pin. Do not load this pin resistively. QFN5x5 32pins Pin # 20, 21,22, 23 6 19 18 8 2, 3, 4, 5 7 17 1, 9, 10, 11, 12, 13, 14, 15, 16, 24, 25, 26, 27, 28, 29, 30, 31, 32 Name Description Regulator Output. OUT is the output of the linear regulator, By pass OUT to GND with a VOUT 4.7µF or greater capacitor. BIAS Bias Voltage. Bypass to ground with a 1uF or greater capacitor. Feedback Input. Connect a resistive voltage divider from OUT to FB to set the output FB voltage. OUT feedback threshold is 0.5V. Enable Input. Drive EN high to turn on the MP2030, drive EN low to turn it off. For EN automatic startup, connect EN to IN. GND Ground, exposed pad. Power Source Input. IN supplies power to the load at the output (through the power VIN transistor). Bypass IN to GND with a 1µF or greater capacitor. PGOOD Open drain output. High indicated VOUT> 90% final value. BYPASS Connect a 1nF to this pin. Do not load this pin resistively. MP2030 Rev. 0.91 10/10/2011 NC These are no connection pins. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 4 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS C1=10μF, C2=0.1μF, C3=1.0μF, C4=22μF, C6=22nF, VB=5.5V, TA=25ºC, unless otherwise noted . Load Regulation Voltage Dropped Line Regulation 50 0 1.6 2.4 3.2 4.0 1.222 0A 1.218 VI N=1.5V 1.22 VI N=1.8V 1.21 1.210 1.5 2.0 2.5 3.0 3.5 4.0 4.5 1.20 0.0 0.6 1.2 1.8 2.4 3.0 3.6 PSRR vs. Frequency V IN ( V ) I OUT (A) Line Regulation Load Regulation 1.820 1.820 1.816 1.816 VI N=2.1V 1.2A 0.4A 1.812 V OUT ( V ) V OUT ( V ) PSRR ( dB ) 1.23 1.214 LOAD CURRENT ( A ) 90 80 70 60 50 40 30 V =1.5V IN 20 VOUT =1.2V 10 IOUT =0.3A 0 0.01 0.1 1 1.24 0.4A V OUT ( V ) 100 0.8 1.2A 1.226 150 0.0 1.25 1.230 VB=5V VOUT =1.2V V OUT ( V ) VOLTAGE DROPPED ( mV ) 200 0A 1.808 1.804 10 VI N=2.5V 1.808 1.804 1.800 2.0 100 1000 1.812 2.5 3.0 3.5 4.0 1.800 0.0 0.6 1.2 1.8 2.4 3.0 3.6 4.5 V IN ( V ) FRE QUE NCY ( KHz ) Case Temperature vs. PD I OUT (A) Line Regulation Load Regulation MP2030DU 70 VOUT =1.2V VB=5V V OUT ( V ) 60 50 40 2.520 2.52 2.516 2.51 VI N=2.8V 1.2A 0.4A 2.51 0A 2.50 30 20 0.5 2.52 V OUT ( V ) 80 1.0 1.5 2.0 PD ( W ) MP2030 Rev. 0.91 10/10/2011 2.5 3.0 2.50 2.5 2.512 VI N=3.3V 2.508 2.504 2.9 3.3 3.7 4.1 4.5 2.500 0.0 0.5 1.0 1.5 2.0 2.5 3.0 V IN ( V ) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. I OUT (A) 5 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS C1=10μF, C2=0.1μF, C3=1.0μF, C4=22μF, C6=22nF, VB=5.5V, TA=25ºC, unless otherwise noted VDROPOUT vs. Temperature 40 VFB vs. Temperature VOUT=1.2V, IOUT=1A VOUT vs. Temperature VIN=1.5V, VOUT=1.2V, IOUT=1mA 0.520 1.23 0.515 1.22 31 0.510 0.505 0.500 V OUT ( V ) 34 V FB ( V ) VDROPOUT ( mV ) IOUT =1A 37 1.21 1.20 28 0.495 1.19 25 -45 -25 -5 15 35 55 75 95 0.490 -45 -25 -5 15 35 55 75 95 1.18 -45 -25 -5 15 35 55 75 95 VOUT 0.1V/div IOUT 1A/div VIN 2V/div VEN 2V/div VIN 2V/div VEN 2V/div VOUT 1V/div VOUT 1V/div IOUT 0.5A/div IOUT 0.5A/div VIN 2V/div VOUT 2V/div IOUT 5A/div MP2030 Rev. 0.91 10/10/2011 VOUT 2V/div VPG 5V/div IOUT 5A/div VOUT 1V/div IOUT 2A/div www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 6 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS C1=10μF, C2=0.1μF, C3=1.0μF, C4=22μF, C6=22nF, VB=5.5V, TA=25ºC, unless otherwise noted Power Rump Up Power Rump Down Line Transient VIN=2.1V, VOUT=1.8V, IOUT=3A, with Resistor load VIN=2.1V, VOUT=1.8V, IOUT=3A, with Resistor load VIN=1.8 to 5V, VOUT=1.2V, IOUT=0.2A, VIN 2V/div VIN 2V/div VB 5V/div VOUT 1V/div VB 5V/div VOUT 1V/div IOUT 2A/div IOUT 2A/div MP2030 Rev. 0.91 10/10/2011 VIN 2V/div VOUT 20mV/div www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 7 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR BLOCK DIAGRAM BYPASS -- TURNS OFF THE GATE SOFT START EN + REFERENCE + BIAS VIN GATE 0.5V -GND VOUT PGOOD 160us DELAY FB + O -0.45V Figure 1—Block Diagram of Low Dropout Regulator MP2030 Rev. 0.91 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 8 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR OPERATION MP2030 Theory of Operation The MP2030 linear dropout regulator provides adjustable output voltages from 0.9V to 3.6V at currents up to 3A. This LDO is protected against short circuits, and it has thermal shut down protection with 15oC hystheresis. Utilizing Two Power Supplies In order to maximize the efficiency MP2030 uses two power supplies. One power supply is connected to the BIAS pin and it is used to power up the internal circuitries including band gap reference and the rest of control circuitries. The other power supply is connected to the VIN pins which are the drain of pass device. This power supply can be set close to output voltage of LDO. The output pins are the source of the pass device. The smaller voltage drop across the pass device translates to the smaller power loss in pass device. Thus, the part operates with higher efficiency. Internal Current Limit The MP2030 has an internal current limit set at almost 4.5A. When the output current is greater than 4.5A, current limit is activated, the output voltage is internally forced close to ground, and stays at this voltage until the short circuit is removed. Internal current limit is very well controlled over process variations and ambient temperature. Enable The enable (EN) pin is active high. The enable pin has a built-in hystheresis. If this pin is held below 0.8V then part shuts down and draws less than 1uA from VBIAS supply. If not used then connect this pin to VBIAS. Under Voltage Lockout The Bias voltage is monitored by a circuit that prevents the LDO start up when the bias voltage is below 2.35V. This circuitry has an approximate hystheresis of 90mV. Soft Start MP2030 incorporates internal soft start function. This internal function reduces the start up current surge into the output capacitor. This allows the gradual built up of output voltage to its final set value. The internal soft start cap is held to ground if there is a fault condition. The fault conditions are UVLO, Thermal shut down, and disable. The internal soft start time is almost 550us. Power Good The Power Good pin is an open drain output and can be connected to Bias voltage via a pull up resistor. Open drain transistor turns off and PG pin voltage value becomes VBIAS when VFB exceeds 450mV. Also PG pin can sink at least 230μA while being low. Setting the Output Voltage The MP2030 has an adjustable output voltage, set by using a resistive voltage divider from the output voltage to FB pin. The voltage divider divides the output voltage down to the feedback voltage by the ratio: VFB = VOUT*R2/ (R1+R2) Where VFB is the feedback threshold voltage (VFB=0.5V), and VOUT is the output voltage. R1 connects between VOUT and VFB, and R2 connects between VFB and ground. Thus the output voltage is: VOUT = 0.5*(R1+R2)/R2 R2 can be as high as 100KΩ, but a typical value is 10KΩ. Using that value, R1 is determined by: R1=R2 x (VOUT-VFB)/VFB For example, for a 1.8V output voltage, R2 is 10KΩ, and R1 is 26kΩ. You can select 26kΩ (1%) resistor for R1. Power Dissipation Most of the power dissipation is due to power dissipation in PASS device. For example, assume VBIAS=5.0V, VIN=2.0V, VOUT=1.8V, and IOUT=3A: PD (PASS) = (VIN-VOUT) x IOUT PD (PASS) = (2.0V-1.8V) x 3A=0.6 MP2030 Rev. 0.91 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 9 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR PBIAS = VBIAS x IGND= 5V x (220uA) = 1.25mW. This is negligible compared to PD (PASS) =0.6W For QFN 3X3 θJA is 50oC/W. 0.6W power is dissipated when 3A output current goes through PASS device with VIN=2.0V, and VOUT=1.8V. This gives a rise in die temperature for 0.6 x 50oC/W=30oC This is a safe operating point assuming a junction temperature of 135oC at an 85oC ambient temperature. A heat sink needs to be utilized for a better temperature performance. MP2030 Rev. 0.91 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 10 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR PACKAGE INFORMATION QFN10 (3mm x 3mm) 2.90 3.10 0.30 0.50 PIN 1 ID MARKING 0.18 0.30 2.90 3.10 PIN 1 ID INDEX AREA 1.45 1.75 PIN 1 ID SEE DETAIL A 10 1 2.25 2.55 0.50 BSC 5 6 TOP VIEW BOTTOM VIEW PIN 1 ID OPTION A R0.20 TYP. PIN 1 ID OPTION B R0.20 TYP. 0.80 1.00 0.20 REF 0.00 0.05 SIDE VIEW DETAIL A NOTE: 2.90 0.70 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH. 3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX. 4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VEED-5. 5) DRAWING IS NOT TO SCALE. 1.70 0.25 2.50 0.50 RECOMMENDED LAND PATTERN MP2030 Rev. 0.91 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 11 MP2030 – 3A VERY LOW DROPOUT LINEAR REGULATOR QFN32 (5mm x 5mm) NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. 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. MP2030 Rev. 0.91 10/10/2011 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 12