MPQ8903 Industrial Grade, Low Dropout 150mA Linear Regulator The Future of Analog IC Technology DESCRIPTION FEATURES The MPQ8903 is a 150mA low-dropout linear regulator that can operate from 2.7V to 6.5V input. It regulates the output with 2% accuracy and comes with preset 2.5V, 2.85V or 3.3V output. An external resistor divider may be used to adjust the output voltage from 1.25V to 5V. The MPQ8903 has thermal protection to guard against harsh operating conditions, and is available in 5-pin TSOT23 package. • • • • • • • • • Guaranteed Industrial Operating Temperate Range Limits 2.7V to 6.5V Input Voltage Range Fixed Output Voltage Options of 2.5V, 2.85V or 3.3V Adjustable Output Voltage from 1.25V to 5V using an External Resistor Divider Low 100mV Dropout at 100mA Output 2% Accurate Output Voltage Stable With Low-ESR Output Capacitors Thermal Protection Available in TSOT23-5 Package APPLICATIONS • • • 802.11 PC Cards Mobile Handset PLL Power Audio Codec Power “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION VIN C1 1µ F VIN IN MPQ8903DX-X.X EN OUTPUT OUT GND EN (Pin3) may be connected to IN (Pin 1) directly R1 FB The sum of R1 and R2 R2 should not exceed 100k C3 2.2µ F CERAMIC VDROPOUT vs ILOAD 140 1.25V to 5V VDROPOUT (mV) 2.7V to 6.5V 160 120 100 80 60 40 20 0 MPQ8903 Rev. 1.2 5/21/2010 0 20 40 60 80 100 120 140 160 ILOAD (mA) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 1 MPQ8903 – LOW DROPOUT, 150mA LINEAR REGULATOR ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (TA) MPQ8903DJ–2.5 MPQ8903DJ–2.85 MPQ8903DJ–3.3 R4 TSOT23-5 –40°C to +85°C R5 R6 * For Tape & Reel, add suffix –Z (e.g. MPQ8903DJ–2.85–Z) For RoHS Compliant Packaging, add suffix –LF (e.g. MPQ8903DJ–2.85–LF–Z) PACKAGE REFERENCE TOP VIEW 1 GND 2 EN 3 ABSOLUTE MAXIMUM RATINGS (1) IN Supply Voltage .......................–0.3V to +7.0V FB Voltage .........................–0.3V to VOUT + 0.3V All Other Pins .................................–0.3V to +6V Continuous Power Dissipation (TA = +25°C)(2) ……………………………………………….0.56W Junction Temperature ...............................150°C Lead Temperature ....................................260°C Storage Temperature ............. –65°C to +150°C Recommended Operating Conditions (3) Input Voltage...................................2.7V to 6.5V Output Voltage .................................1.25V to 5V Load Current ...........................150mA Maximum Operating Junct. Temp (TJ)..... –40°C to +125°C MPQ8903 Rev. 1.2 5/21/2010 MARKING IN 5 OUT 4 FB Thermal Resistance (4) θJA θJC TSOT23-5 ..............................220 .... 110 .. °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 PCB. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 2 MPQ8903 – LOW DROPOUT, 150mA LINEAR REGULATOR ELECTRICAL CHARACTERISTICS VIN = 5V, TA = +25°C, unless otherwise noted. Parameter Operating Voltage Symbol Condition IOUT = 1mA Output Voltage Accuracy IOUT = 1mA VOUT = 1.5V to 5V Shutdown Current VEN = 0V, VIN = 5V FB Regulation Voltage Dropout Voltage (6) Line Regulation Load Regulation PSRR Min 2.7 Typ Max 6.5 ±1.0 ±2.0 –40°C ≤ TA≤ +85°C ±1.0 ±3.0 0.1 1 –40°C ≤ TA ≤ +85°C 0.1 2 1.197 1.222 1.246 –40°C ≤ TA ≤ +85°C IOUT = 150mA IOUT = 1mA, VIN = (VOUT + 0.5V) to 6.5V (7) 1.194 1.222 1.249 VOUT = 3V VOUT = 4V 0.08 –40°C ≤ TA ≤ +85°C 0.005 0.11 IOUT = 1mA to 150mA, VIN = VOUT + 0.5V (7) –40°C ≤ TA ≤ +85°C 0.001 0.02 0.001 0.03 VIN > VOUT +0.5V, C3 = 2.2µF, VIN(AC) = 100mV, f = 1kHz (5) VIN > VOUT +0.5V, C3 = 2.2µF, VIN(AC) = 100mV, f = 1MHz (5) V %/V %/mA dB 20 dB 0.4 –40°C ≤ TA ≤ +85°C µA 50 1.5 VEN = 0V % mV 0.005 EN Input High Voltage EN Input Low Voltage EN Input Bias Current 150 125 Units V 0.01 1 0.01 2 V V µA Thermal Protection (5) 155 °C Thermal Protection Hysteresis(5) 30 °C Notes: 5) Parameter is guaranteed by design, not production tested. 6) Dropout Voltage is defined as the input to output differential when the output voltage drops 1% below its normal value. 7) VIN = 2.7V for VOUT = 1.25V to 2.2V MPQ8903 Rev. 1.2 5/21/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 3 MPQ8903 – LOW DROPOUT, 150mA LINEAR REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS VIN = 4.5V, VOUT = 2.85V, C1 = 1µF, C2 = 0.1µF, C3 = 2.2µF, TA = +25°C unless otherwise noted. IGND vs VIN IGND vs ILOAD 135 135 130 130 ILOAD = 150mA 125 120 ILOAD = 1mA 115 115 110 110 2.87 2 3 4 5 VIN (V) 6 105 7 50 100 ILOAD (mA) 150 140 VDROPOUT (mV) VOUT (V) 0 160 2.86 ILOAD = 1mA 2.855 ILOAD = 150mA 2.85 2.845 MPQ8903 Rev. 1.2 5/21/2010 VIN = 2.7V VDROPOUT vs ILOAD VOUT vs. VIN 2.865 2.84 VIN = 5.0V 125 120 105 VIN = 6.5V 120 100 80 60 40 20 3 4 5 VIN (V) 6 7 0 0 20 40 60 80 100 120 140 160 ILOAD (mA) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 4 MPQ8903 – LOW DROPOUT, 150mA LINEAR REGULATOR PIN FUNCTIONS TSOT23-5 Pin # 2 Name Description GND Ground. Enable Input. Drive EN high to turn on the MPQ8903; low to turn it off. For automatic startup, connect EN to IN. Power Source Input. IN supplies the internal power to the MPQ8903 and is the source of the pass transistor. Bypass IN to GND with a 1µF or greater capacitor. Regulator Output. OUT is the output of the linear regulator. Bypass OUT to GND with a 1µF or greater capacitor. No Connect. Feedback Input. Connect a resistive voltage divider from OUT to FB to set the output voltage. The OUT feedback threshold is 1.222V. 3 EN 1 IN 5 OUT NC 4 FB OPERATION The MPQ8903 is a low-current, low-dropout linear regulator. The MPQ8903 uses a PMOS pass element and features internal thermal shutdown. The normally fixed output MPQ8903 may be converted to an adjustable output device by applying a resistor divider network as shown in Figure 2. An optional feed-forward capacitor, CBYP, may be added for an improved transient response. OUT VIN VOUT INTERNAL RESISTOR DIVIDER + -- CBYP FB BANDGAP REFERENCE C3 VEN GND Figure 1—Fixed Output Regulator EXTERNAL RESISTOR OUT DIVIDER VIN VOUT FB + -- R1 CBYP BANDGAP REFERENCE R2 COUT VEN GND Figure 2—Adjustable Regulator: VOUT = VFB(1+(R1/R2)) MPQ8903 Rev. 1.2 5/21/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 5 MPQ8903 – LOW DROPOUT, 150mA LINEAR REGULATOR APPLICATION INFORMATION Setting the Output Voltage The fixed output voltage of the MPQ8903 is set to 2.5V, 2.85V or 3.3V, depending on the internal resistor divider (Figure 1). You can also adjust the output voltage by using an external resistor divider (R1 and R2 in Figure 2). However, the sum of R1 and R2 should not exceed 100kΩ in order to minimize the impact of the internal resistor divider. For an accurate output-voltage setting, use 10kΩ (±1%) for the low-side resistor R2 of the voltage divider, while the high-side resistor R1 can be determined by the equation: ⎛V − VFB R1 = R2 × ⎜⎜ OUT VFB ⎝ ⎞ ⎟⎟ ⎠ Where VFB is the OUT feedback threshold voltage equal to 1.222V. Example: For 2.5V Output R1 = 2.5 V − 1.222 V = 10.41kΩ ⎛ 1.222 V ⎞ ⎜ ⎟ ⎝ 10kΩ ⎠ Input Capacitor Selection For proper operation, place a ceramic capacitor (C1) between 1µF and 10µF of dielectric type X5R or X7R between the input pin and ground. Larger values in this range will help improve line transient response at the drawback of increased size. Output Capacitor Selection For stable operation, use a ceramic capacitor (C3) of type X5R or X7R between 1µF and 10µF. Larger values in this range will help improve load transient response and reduce noise with the drawback of increased size. Output capacitors of other dielectric types may be used, but are not recommended as their capacitance can deviate greatly from their rated value over temperature. To improve load transient response, add a small ceramic (X5R, X7R or Y5V dielectric) 100nF feed forward capacitor in parallel with R1. The feed forward capacitor is not required for stable operation. You can select a standard 10.5kΩ (±1%) resistor for R1. The following table lists the selected R1 values for some typical output voltages: Table 1—Adjustable Output Voltage R1 Values VOUT (V) R1 (Ω) 1.25 232 1.5 2.26k 1.8 4.75k 2 6.34k 2.5 10.5k 2.8 13k 3 14.7k 3.3 16.9k 4 22.6k 5 30.9k R2 (Ω) 10k In Figures 3 and 4, C2 is added for an improved transient response. MPQ8903 Rev. 1.2 5/21/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 6 MPQ8903 – LOW DROPOUT, 150mA 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. 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. If change is necessary, please follow these guidelines and take figure 5 for reference. 1) Input and output bypass ceramic capacitors are suggested to be put close to the IN Pin and OUT Pin respectively. VIN 1 IN C1 5 OUTPUT MPQ8903DJ R3 VIN OUT 3 EN GND FB C2 R1 4 C3 R2 2 VOUT VIN R3 1 C1 VIN OUT 5 C3 2 GND 3 EN FB 4 R2 C2 R1 GND Top Layer Figure 3—PCB Layout MPQ8903 Rev. 1.2 5/21/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 7 MPQ8903 – LOW DROPOUT, 150mA LINEAR REGULATOR PACKAGE INFORMATION TSOT23-5 0.95 BSC 0.60 TYP 2.80 3.00 5 4 1.20 TYP 1.50 1.70 1 2.60 TYP 2.60 3.00 3 TOP VIEW RECOMMENDED LAND PATTERN 0.84 0.90 1.00 MAX 0.09 0.20 SEATING PLANE 0.30 0.50 0.95 BSC 0.00 0.10 SEE DETAIL "A" FRONT VIEW SIDE VIEW NOTE: GAUGE PLANE 0.25 BSC 0.30 0.50 0o-8o DETAIL A 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSION OR GATE BURR. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.10 MILLIMETERS MAX. 5) DRAWING CONFORMS TO JEDEC MO-193, VARIATION AA. 6) DRAWING IS NOT TO SCALE. 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. MPQ8903 Rev. 1.2 5/21/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 8