The Future of Analog IC Technology DESCRIPTION The MPQ90 is a low-current, low-dropout, linear regulator that operates on a single 2.Vto-.V input supply. An external resistor controls the output voltage. The MPQ90 can supply up to 00mA of load current. The enable pin () allows the part to enter a low-current shutdown mode (=0). The MPQ90 features thermal overload and current limit protection. It is available in an -pin QFN (2 3mm) package. FEATURES MPQ90 Industrial/Automotive-Grade 00mA Linear Regulator AEC-Q00 Qualified Power-Good Open Collector Output Guaranteed Industrial/Automotive Temp. Range Limits Operates from a 2.V-to-.V Input Low 300mV Dropout at 00mA Output Stable with Very Small Ceramic Capacitors 2.% Feedback Reference Adjustable Output Voltage from 0.V to V Better than 0.00%/mA Load Regulation Stable with Low-ESR Output Capacitor Low 0μA Ground Current Internal Thermal Protection Current Limit Protection 7µA Typical Quiescent Current at Shutdown Available in AEC-Q00 Qualified Grade APPLICATIONS Low-Current Regulators Battery-Powered Systems Mobile Devices, such as Cell Phones and GPS Navigators All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION R V V 3 R2 MPQ90 Rev..0 www.monolithicpower.com
ORDERG FORMATION Part Number Package Top Marking MPQ90DD-AEC* MPQ90DD** QFN (2 x 3mm) T3 * For Tape & Reel, add suffix Z (e.g. MPQ90DD-AEC Z); For RoHS, compliant packaging, add suffix LF (e.g. MPQ90DD-AEC LF Z). ** For Tape & Reel, add suffix -Z (e.g. MPQ90DD-Z); For RoHS, compliant packaging, add suffix -LF (e.g. MPQ90DD-LF-Z). PACKAGE REFERCE TOP VIEW NC 2 7 NC 3 EXPOSED PAD ON BACKSIDE CONNECT TO ABSOLUTE MAXIMUM RATGS (), to... -0.3V to +7V to... -0.3V to V +0.3V... -0.3V to V + 0.3V Continuous Power Dissipation (T A = +2 C) (2).2.W Junction Temperature... 0 C Lead Temperature... 20 C Storage Temperature... - C to +0 C Recommended Operating Conditions (3) Input Voltage V... 2.V to.v Output Voltage... 0.V to V Load Current... 00mA Maximum Operating Junction Temp. (T J ). -0 C to +2 C Thermal Resistance () θ JA θ JC QFN (2 x 3mm)...... 2... C/W Notes: ) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature T J(MAX), the junction-toambient thermal resistance θ JA, and the ambient temperature T A. The maximum allowable continuous power dissipation at any ambient temperature is calculated by P D(MAX)=(T J(MAX)- T A)/ θ 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) The device is not guaranteed to function outside of its operating conditions. ) Measured on approximately square of oz copper. MPQ90 Rev..0 www.monolithicpower.com 2
ELECTRICAL CHARACTERISTICS V = 3.3V, V =.2V, C =.7µF, C = 2.2µF, T J = -0 C to +2 C, Typical value are T J = 2 C, unless otherwise noted. Parameter Symbol Condition Min Typ () Max Units Operating Voltage I = ma 2.. V Ground Pin Current (7) I = ma 0 200 µa I = 00mA 7 2 ma Shutdown Current V =.V, V = V 7 µa Regulation Voltage T J = +2 C 0. 0.9 0.0-0 C T J +2 C 0.7 0.9 0.3 V Dropout Voltage () I = 00mA 200 300 0 mv Line Regulation () I = ma, (7) V = (V + 0.V) to.v -0. 0.0 0. %/V Load Regulation () I = ma to 00mA, V = V + 0.V -0. 0.00 0. %/ma Power-Good Output Voltage, Low 9 L I sink = 0.mA 0 0. V Input, High.2 V Input, Low 0. V Input Bias Current V =.V 0.0 μa Thermal Protection () C Current Limit 0 0 ma Notes: ) Parameter is guaranteed by design, not production tested. ) Resistors for V measurement are 0kΩ, kω, % 7) The ground current does not include current through feedback current ) Dropout Voltage is defined as the input to output differential when the output voltage drops % below its nominal value 9) V FEEDBACK is 90% of the regulated value with 0kΩ pull-up to V MPQ90 Rev..0 www.monolithicpower.com 3
TYPICAL PERFORMANCE CHARACTERISTICS Based on the Figure 2 Typical Application Circuit C=2.2μF, C2 =.7μF, C3=nF, T A = +2 C, unless otherwise noted. 0.0 0.3 0.30 0.2 0.20 0. 0.0 00 200 300 00 00 0.3 0.2 0. 0.0 0.9 0. 2. 3 3... 0. 0.0 0.9 0. 0.7 0. 0 00 200 300 00 00.2..0.79.7.77 2. 3.0 3..0..0.3.2..0.79.7 0 00 200 300 00 00 3.3 3.32 3.3 3.30 3.29 3.2 0 3. 3.9.3.7.. 3.33 3.32 3.3 3.30 3.29 3.2 0 00 200 300 00 00 70 0 0 0 30 20 2 3 0 9 7 2 3 MPQ90 Rev..0 www.monolithicpower.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued) C=2.2μF, C2 =.7μF, C3=nF, T A = +2 C, unless otherwise noted. 90 0 0 70 30 0 0 0 0 90 30 20 70 0 0 0 0..0 0 00 000 0000-0 -0 20 0 0 0 0 00 30 300 20 200 0-0 -0 20 0 0 0 0..2.0 0. 0.0 0.0 0.03 0.02.300.20.220.0 0. 0. -0-0 20 0 0 0 0 0.0 0.00-0 -0 20 0 0 0 0.0.00-0 -0 20 0 0 0 0 300 20 0 20 0 0-0 -0 20 0 0 0 0 MPQ90 Rev..0 www.monolithicpower.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued) C=2.2μF, C2 =.7μF, C3=nF, T A = +2 C, unless otherwise noted. 0mV/div. V 0.V/div. 00mV/div. 0.2A/div. V V/div. V/div. V 0.2A/div. 0.A/div. 2V/div. 0.V/div. V 2V/div. V/div. /div. 2V/div. V/div. V 0.2A/div. 0.2A/div. 0./div. A/div. 2V/div. V/div. A/div. MPQ90 Rev..0 www.monolithicpower.com
P FUNCTIONS Pin # Name Description Regulator Output. Bypass to with a.7μf capacitor. 2 NC No connect. 3 Power-Good Open Collector Output. Monitors the regulator output. If the regulator output falls below 0% of its regulation point, the power-good pin goes low. Feedback. Connect a resistive voltage divider from to to set the output voltage. feedback threshold is 0.V. Enable Input. Drive above.2v to turn on the MPQ90. Drive below 0.V to turn it off. Ground. 7 NC No connect. Exposed Pad Power Source Input. supplies the internal power to the MPQ90 and is the source for the pass transistor. Bypass to with a 2.2μF capacitor. Connect to. OPERATION The MPQ90 is a low-current, low-voltage, low-dropout, linear regulator. It is intended for devices that require very low voltage and low quiescent current power, such as wireless modems and cellular phones. The MPQ90 uses a PNP pass element and features internal thermal shutdown and internal current limit circuit. V C THERMAL PROTECT R V -- C2 + + -- 0.V REF R2 V R3 3 Figure : Functional Block Diagram MPQ90 Rev..0 www.monolithicpower.com 7
APPLICATION FORMATION Setting the Output Voltage The MPQ90 has an adjustable output voltage set via an external resistor divider (R and R2 in Figure 2). V R = R2 V V where V = 0.V is the feedback threshold voltage. Example: For a 2.V output and R2=0kΩ 2. 0. R = 0k = 0k 0. Use a standard 0kΩ (±%) resistor for R. Table lists selected R values for typical output voltages (R2 = 0kΩ). Power-Good The power-good () pin monitors the output voltage; if the output voltage goes below 0% of its regulation point, the pin goes low. The pin is an open collector output that connects to a pull-up resistor (typically 0kΩ). Tie the pull-up resistor to 0V-to-.V supply, such as regulated input voltage. Table : Adjustable Output Voltage Values vs. R (R2 =0kΩ) V (V) R (Ω).2 k. 20k. 2k 2 30k 2. 0k 2. k 3 0k 3.3 k 70k 90k Bypass Capacitors Bypass the reference voltage can be bypassed with an external capacitor to reduce noise. Use a low-esr ceramic capacitor for the best performance. TYPICAL APPLICATION CIRCUIT V C3 nf.v 3 Figure 2: Typical Application Circuit MPQ90 Rev..0 www.monolithicpower.com
PCB layout guide PCB layout is very important to achieve good regulation, ripple rejection, transient response and thermal performance. For optimal performance, duplicate the EVB layout from Figure 3. For any changes, follow the guidelines below: ) Place the input and output ceramic bypass capacitors close to their respective and pins. 2) Use short and direct feedback connections. Place the feedback resistors and compensation components as close to the chip as possible. 3) Connect, and to large copper surfaces to help cool the chip to improve thermal performance and long-term reliability. V C R3 R R2 C2 V C2 R C3 NC 2 3 7 NC R3 R2 C Figure 3: PCB Layout, Top Layer MPQ90 Rev..0 www.monolithicpower.com 9
PACKAGE FORMATION QFN (2mm x 3mm) P ID MARKG 2.90 3.0 0. 0.30 0.30 0.0.. P ID SEE DETAIL A P ID DEX AREA.90 2.0 0.0 BSC.0.70 TOP VIEW BOTTOM VIEW 0.20 REF 0.0.00 P ID OPTION A 0.30x TYP. P ID OPTION B R0.20 TYP. 0.00 0.0 SIDE VIEW DETAIL A 2.90 NOTE: 0.2 0.70.70 ) ALL DIMSIONS ARE MILLIMETERS. 2) EXPOSED PADDLE SIZE DOES NOT CLUDE MOLD FLASH. 3) LEAD COPLANARITY SHALL BE 0.0 MILLIMETER MAX. ) DRAWG CONFORMS TO JEDEC MO-229, VARIATION VCED-2. ) DRAWG IS NOT TO SCALE. 0.0.0 RECOMMDED LAND PATTERN 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. MPQ90 Rev..0 www.monolithicpower.com 0
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