MP20049 Ultra-Low Noise, High PSRR 150mA Linear Regulator in 0.8x0.8mm WLCSP The Future of Analog IC Technology DESCRIPTION The MP20049 is an ultra-low noise, low-dropout, high PSRR linear regulator. Fixed output voltage options are available between 1.2V to 4.5V with 1% accuracy while operating from a +2.3V to +6V input. It is designed to deliver up to 150mA of load current. Dropout voltage is only 60mV at full load. The MP20049 uses an internal PMOS as the pass element, which consumes 50A supply current at no load condition and is suitable for battery-power devices. New innovative design techniques enable the MP20049 to achieve ultra-low output voltage noise of only 16VRMS without a noise bypass capacitor. The MP20049 is designed and optimized to work with low value, low cost ceramic capacitors. It typically requires only 1F of output capacitance for stability with any load. The MP20049 features current limit and over temperature protection and is available in a tiny 4-ball 0.8x0.8mm WLCSP package. FEATURES * * * * Linear Regulator in 0.8x0.8mm WLCSP Input Voltage Range: 2.3V to 6V Up to 150mA Output Current 16VRMS Output Noise (100Hz to 100kHz) with No Bypass Capacitor required High PSRR: * 78dB @1kHz * 55dB @100kHz Low Dropout: * 50mV @120mA Load * 60mV @150mA Load Stable with 1F Ceramic Capacitor for Any Load Very Fast Line/Load Transient Response Current Limit and Thermal Protection * * * * * APPLICATIONS * * * * * Cellular Mobile Phones Digital Cameras Handheld and Battery-powered Equipment Wireless LAN Post DC-to-DC Regulation "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION VIN VIN VOUT VOUT MP20049 EN MP20049 Rev. 1.1 10/22/2010 GND www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 1 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP ORDERING INFORMATION Part Number* Package VOUT(V) Top Marking Free Air Temperature (TA) MP20049DC-2.8** WLCSP (0.8x0.8mm) 2.8 TCO -40C to +125C * For Tape & Reel, add suffix -Z (e.g. MP20049DC-Z); For RoHS, compliant packaging, add suffix -LF (e.g. MP20049DC-LF-Z). ** Contact factory for other fixed Output Options. ORDERING GUIDE** PACKAGE REFERENCE A 1 2 VIN VOUT TOP VIEW (Not to Scale) B EN GND 0.8x0.8mm WLCSP ABSOLUTE MAXIMUM RATINGS (1) Supply Input Voltage ................................ 6.5V Continuous Power Dissipation (TA = +25C) (2) WLCSP ................................................. 0.37W Storage Temperature Range .... -65C to 150C Lead Temperature (Soldering, 10sec) ....300C ESD SUSCEPTIBILITY (3) HBM (Human Body Mode) ..........................2kV MM (Machine Mode) ................................ 200V Recommended Operating Conditions (4) Supply Input Voltage ......................2.3V to 6.0V Enable Input Voltage ........................0V to 5.5V Operating Junct. Temp (TJ)...... -40C to +125C MP20049 Rev. 1.1 10/22/2010 Thermal Resistance (5) JA JC WLCSP.................................. 330 ..... n/a .. 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 JA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX)-TA)/JA. 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) Devices are ESD sensitive. Handling precaution recommended. 4) The device is not guaranteed to function outside of its operating conditions. 5) Measured on JESD51-7, 4-layer PCB. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 2 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP ELECTRICAL CHARACTERISTICS VIN = (VOUT + 0.5V) or 2.5 V (whichever is greater), EN = VIN, IOUT = 10mA, CIN = COUT = 1F TA = 25C, unless otherwise noted. Parameter Input voltage range Maximum Output Current Output Voltage Accuracy Current Limit Symbol VIN IMAX VOUT ILIM Ground Current IQ Dropout Voltage (6) VDROP Line regulation(7) VLNR (8) Load regulation EN Input High Threshold EN Input Low Threshold EN Input Bias Current Shutdown Supply Current Thermal Shutdown Temperature Thermal Shutdown Hysteresis VLDR VIH VIL ISD IGSD TSD TSD Condition Min 2.3 150 -1 165 Typ 250 +1 380 Units V mA % mA No Load(25C) 40 55 70 A No Load(-40C<TA<85C) 40 75 A 40 110 mV 50 120 mV +0.06 %/V 0.4 300 1 %/mA V V nA A C C Continuous IOUT = 10mA RLoad=1 VOUT = 2.8V, IOUT = 80mA TJ=-40C to 125C VOUT = 2.8V, IOUT = 120mA TJ=-40C to 125C VIN=3.3v to 6v IOUT=0.1mA IOUT=1mA to150mA VIN = 3.3V to 5.5V VIN = 3.3V to 5.5V EN = VIN= 5.5V EN = GND 10Hz to 100kHz, COUT=4.7F, Vout=1.2V ILOAD=10mA 1kHz, COUT = 2.2F, ILOAD = 10mA 10kHz , COUT = 2.2F, ILOAD = 10mA 100kHz , COUT = 2.2F, ILOAD = 10mA Output Voltage Noise Output Voltage AC PSRR -0.06 Max 6 0.001 1.2 100 0.03 150 20 16 VRMS 78 dB 75 dB 55 dB Notes: 6) Dropout Voltage is defined as the input to output differential when the output voltage drops 100mV below its nominal value. VOUT V 7) Line Regulation= IN(MAX ) - VOUT V IN(MIN) V - VIN(MIN) x VOUT(NOM) IN(MAX ) 8) Load Regulation= MP20049 Rev. 1.1 10/22/2010 x (% / V) VOUT[ IOUT ( MAX ) ] - VOUT[ IOUT ( MIN ) ] [I OUT ( MAX) - I OUT ( MIN ) ] * VOUT ( NOM ) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 3 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP PIN FUNCTIONS Pin# Name Description A1 B2 VIN GND B1 EN A2 VOUT Regulator Input Supply. Bypass VIN to GND with a 1F or greater capacitor. Ground Pin. Enable Input. Drive EN high to turn on the Regulator; drive it low to turn off the Regulator. For automatic startup, connect EN to VIN. Regulated Output Voltage. Connect a 1F or greater output capacitor between VOUT and GND. MP20049 Rev. 1.1 10/22/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 4 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP TYPICAL PERFORMANCE CHARACTERISTICS VIN=3.3V, VOUT=2.8V, CIN=COUT=1F, TA=25C, unless otherwise noted Quiescent Current vs. Input Voltage 70 120 60 100 50 Dropout Voltage vs. Temperature 80 DR OPOUT V OL T A G E (mV ) Quiescent Current vs. Temperature 80 40 60 30 40 20 20 10 0 -40 -20 0 20 40 60 80 100 T E M PE R A T UR E ( oC ) 0 3 70 1.1 60 1 50 0.7 0.6 10 0.5 75 OUT PUT C UR R E NT (mA ) 500 4 4. 5 5 5. 5 200 100 0 -40 -20 20 40 60 80 100 T E M PE R A T UR E ( oC ) MP20049 Rev. 1.1 10/22/2010 EN threshold vs. Temperature EN high threshold 0. 75 EN low threshold 0. 7 400 300 200 100 3 3. 5 4 4. 5 5 5. 5 INPUT VOLTAGE (V) 0 20 40 60 80 100 T E M PE R A T UR E ( oC ) 0 0 0 20 40 60 80 100 T E M PE R A T UR E ( oC ) 0. 5 -40 -20 6 500 C UR R E NT L I M I T (mA ) C UR R E NT L I M I T (mA ) 3. 5 Current Limit vs. Input Voltage 300 0 -40 -20 I NPUT V OL T A G E (V ) Current Limit vs. Temperature 400 IOUT=150mA 10 0. 6 3 100 125 150 20 0. 55 6 OUT PUT V OL T A G E A C C UR A C Y (% ) 50 30 0. 65 EN low threshold 0.4 25 40 0. 8 0.8 20 50 0. 85 EN high threshold VEN(V) 30 60 0. 9 0.9 40 0 0 6 EN threshold vs. Input Voltage VEN(V) DR OPOUT V OL T A G E (mV ) Dropout Voltage vs. Output Current 3. 5 4 4. 5 5 5. 5 I NPUT V OL T A G E (V ) 70 Line Regulation 0.3 0.2 IOUT=150mA 0.1 IOUT=0A 0.0 -0.1 -0.2 -0.3 3 3. 5 4 4. 5 5 5. 5 6 INPUT VOLTAGE (V) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 5 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN=3.3V, VOUT=2.8V, CIN=COUT=1F, TA=25C, unless otherwise noted Load Regulation 0.06 Output Voltage Accuracy vs. Temperature 0.8 PSRR IOUT=10mA, 50mA, 100mA, 150mA f ranges from 10Hz to 10MHz IOUT=150mA 100 0.6 0.04 80 0.4 0.02 0.00 PSRR (dB) 0.2 0.0 -0.2 -0.02 60 40 20 -0.4 -0.04 -0.06 0 -0.6 0 25 50 75 100 125 150 -0.8 -40 -20 0 20 40 60 80 100 -20 10 IOUT=150mA IOUT=100mA IOUT=50mA IOUT=10mA 10 2 OUT PUT C UR R E NT (mA ) 103 104 105 106 FREQUENCY (Hz) 107 Region of Stable COUT ESR vs. Output Current 100 10 Unstable Range 1 Stable Range 0.1 0 25 50 75 100 125 150 OUTPUT CURRENT (mA) MP20049 Rev. 1.1 10/22/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 6 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN=3.3V, VOUT=2.8V, CIN=COUT=1F, TA=25C, unless otherwise noted Input Power Start Up Input Power Shutdown EN Start Up IOUT=150mA, with Resistor Load IOUT=150mA, with Resistor Load IOUT=150mA, with Resistor Load VOUT 2V/div VOUT 2V/div VOUT 2V/div VIN 2V/div VIN 2V/div VEN 5V/div IOUT 100mA/div IOUT 100mA/div 20ms/div IOUT 100mA/div 20ms/div EN Shutdown Line Transient Load Transient IOUT=150mA, with Resistor Load VIN=2.5V to 5V, IOUT=60mA, with Resistor Load IOUT=1mA to 65mA, with Resistor Load VOUT 2V/div VOUT 100mV/div VOUT 100mV/div VEN 5V/div VIN 2V/div IOUT 100mA/div IOUT 20mA/div IOUT 50mA/div Over Current Protection Entry Over Current Protection Steady State Over Current Protection Recovery VOUT 2V/div VOUT 2V/div VOUT 2V/div VIN 2V/div VIN 2V/div VIN 2V/div IOUT 200mA/div IOUT 200mA/div MP20049 Rev. 1.1 10/22/2010 100ms/div 100ms/div IOUT 200mA/div www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 100ms/div 7 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP OPERATION The MP20049 is an ultra low noise, low dropout, low quiescent current and high PSRR linear regulator for space-restricted applications. It is intended for use in devices that require very low voltage, and ultra-small footprint, such as mobile phone and MP3 players. The MP20049 uses an internal PMOS as the pass elements and features internal thermal shutdown and internal current limit circuits. Dropout Voltage Dropout voltage is the minimum input to output differential voltage required for the regulator to maintain an output voltage within 100mV of its nominal value. It determines the available endof-life battery voltage in battery-powered systems. For the P-channel MOSFET pass element, the dropout voltage is a function of drain to source on resistance. Because the Pchannel MOSFET pass element behaves as a low-value resistor, the dropout voltage of MP20049 is very low. Under Voltage Lockout The MP20049 has an internal under-voltage lockout circuit that disables the device when the input voltage is less than approximately 2.3V. This ensures that the input and the output of the MP20049 Rev. 1.1 10/22/2010 MP20049 behave in a predictable manner during input power-up. Enable ON/Off The MP20049 can be switched ON or OFF by a logic input at the EN pin. A high voltage at this pin will turn the device on. When the EN pin is low, the regulator output is off. The EN pin should be tied to VIN to keep the regulator output always on if the application does not require the shutdown feature. Do not float the EN pin. Current Limit and Thermal Protection The MP20049 includes an independent current limit structure which monitors and controls the P-channel MOSFET's gate voltage to limit the guaranteed maximum output current to 150mA. Thermal protection turns off the P-channel MOSFET when the junction temperature exceeds +150C, allowing the IC to cool. When the IC's junction temperature drops by 20C, the PMOS will be turned on again. Thermal protection limits total power dissipation in the MP20049. For reliable operation, junction temperature should be limited to 125C maximum. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 8 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP FUNCTIONAL BLOCK DIAGRAM VIN 1.23V Reference EN 1.23V Error Amp Vref Filter VOUT Enable Control Thermal Sensor GND Figure 1--Functional Block Diagram MP20049 Rev. 1.1 10/22/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 9 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP APPLICATION INFORMATION Power Dissipation Output Capacitor Selection The power dissipation for any package depends on the thermal resistance of the case and circuit board, the temperature difference between the junction and ambient air, and the rate of airflow. The power dissipation across the device can be represented by the equation: P = (VIN - VOUT) xIOUT The MP20049 is designed specifically to work with very low ESR ceramic output capacitor in space-limiting and performance consideration. Output capacitor of larger values will help to improve load transient response and reduce noise with the drawback of increased size. For the application circuit, the MP20049 requires a minimum capacitance of 0.7F with an ESR of 1 or less. The allowable power dissipation can calculated using the following equation: P(MAX) = (TJunction - TAmbient) / JA be Where (TJunction - TAmbient) is the temperature difference between the junction and the surrounding environment, JA is the thermal resistance from the junction to the ambient environment. Connecting the GND pin of MP20049 to ground with a large ground plane will help the channel heat away. Output Noise and PSRR For MP20049, an internal 50pF bypass capacitor with new innovative structure reduces output noises greatly, without the need for an external bypass capacitor. The power supply rejection is 75dB at 10kHz and 55dB at 100kHz. Input Capacitor Selection Using a capacitor whose value is >1F on the MP20049 input and the amount of capacitance can be increased without limit. Larger values will help to improve line transient response with the drawback of increased size. Ceramic capacitors are preferred, but tantalum capacitors may also suffice. MP20049 Rev. 1.1 10/22/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 10 MP20049 - ULTRA-LOW NOISE, HIGH PSRR 150mA LINEAR REGULATOR IN 0.8x0.8mm WLCSP PACKAGE INFORMATION WLCSP PIN 1 ID MARKING 0.78 0.86 2 0.40 BSC 1 A 0.78 0.86 PIN 1 ID INDEX AREA 0.40 BSC 0.24 0.28 TOP VIEW B BOTTOM VIEW 0.55 0.65 0.17 0.23 SIDE VIEW NOTE: 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) BALL COPLANARITY SHALL BE 0.05 MILLIMETER MAX. 3) JEDEC REFERENCE IS MO-211, VARIATION AA. 4) DRAWING IS NOT TO SCALE. 0.40 0.40 0.20 RECOMMENDED LAND PATTERN 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. MP20049 Rev. 1.1 10/22/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2010 MPS. All Rights Reserved. 11