MAQ5300 Automotive Qualified Single Output 300mA µCap LDO General Description Features The MAQ5300 is an automotive-qualified, ultra-small, ultra-low dropout CMOS regulator (ULDO) that is ideal for today’s most demanding automotive applications including infotainment, camera module, image sensors, and anywhere PCB space is limited. It offers extremely low dropout voltage, very low output noise and can operate from a 2.3V to 5.5V input while delivering up to 300mA. • • • • • • • • • The MAQ5300 offers 2% initial accuracy, low ground current (typically 85µA total), thermal shutdown, and current-limit protection. The MAQ5300 can also be put into a zero-off-mode current state, drawing no current when disabled. The MAQ5300’s operating junction temperature range is –40°C to +125°C and it is available in fixed output voltages in a lead-free (RoHS-compliant) 6-pin 2mm × 2mm DFN package. Datasheets and support documentation are available on Micrel’s website at: www.micrel.com. Small 2mm × 2mm DFN package Low dropout voltage: 100mV at 300mA Output noise 120µVRMS Input voltage range: 2.3V to 5.5V 300mA guaranteed output current Stable with ceramic output capacitors Low quiescent current: 85µA total 30µs turn-on time High output accuracy − ±2% initial accuracy − ±3% over temperature • Thermal shutdown and current-limit protection Applications • • • • CMOS image sensors Backup camera modules GPS Receivers Infotainment Typical Application MAQ5300 Dropout Voltage CMOS Sensor Application DROPOUT VOLTAGE (mV) 120 100 80 60 VOUT = 2.8V 40 20 0 0 50 100 150 200 250 300 OUTPUT CURRENT (mA) Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com July 10, 2015 Revision 2.3 Micrel, Inc. MAQ5300 Ordering Information(1) Marking Code Voltage Temperature Range Package Lead Finish MAQ5300-1.5YML QMF 1.5V –40°C to +125°C 6-Pin 2mm × 2mm DFN Pb-Free MAQ5300-1.8YML QMG 1.8V –40°C to +125°C 6-Pin 2mm × 2mm DFN Pb-Free MAQ5300-2.5YML QMJ 2.5V –40°C to +125°C 6-Pin 2mm × 2mm DFN Pb-Free MAQ5300-2.8YML QMM 2.8V –40°C to +125°C 6-Pin 2mm × 2mm DFN Pb-Free MAQ5300-2.85YML QMN 2.85V –40°C to +125°C 6-Pin 2mm × 2mm DFN Pb-Free MAQ5300-3.0YML QMP 3.0V –40°C to +125°C 6-Pin 2mm × 2mm DFN Pb-Free MAQ5300-3.3YML QMS 3.3V –40°C to +125°C 6-Pin 2mm × 2mm DFN Pb-Free Part Number Note: 1. Other voltages are available. Contact Micrel for details. Pin Configuration 6-Pin 2mm × 2mm DFN (ML) (Top View) Pin Description Pin Number Pin Name 1 EN 2 GND Power Ground. 3 VIN Supply Voltage (Input): Decouple with a minimum 1µF ceramic capacitor. 4 VOUT 5 NC No Connection. 6 NC No Connection. EPAD EPAD July 10, 2015 Pin Function Enable (Input): Active High. High = on, low = off. Do not leave this pin floating. Regulated Output Voltage (Output): Decouple with a minimum 1µF ceramic capacitor. Exposed pad heat sink. Internally connected to ground. Connect to ground copper on board to lower thermal resistance. 2 Revision 2.3 Micrel, Inc. MAQ5300 Absolute Maximum Ratings(2) Operating Ratings(3) Supply Voltage (VIN) ............................................. 0V to +6V Enable Input (VEN). ....................................... 0V to VIN+0.3V (4) Power Dissipation ................................... Internally Limited Lead Temperature (soldering, 10s) ............................ 260°C Storage Temperature (TS) ............................–65°C to +150° ESD Rating (5) HBM ...................................................................... 2kV MM ......................................................................... 100V Supply Voltage (VIN) ..................................... +2.3V to +5.5V Enable Input (VEN) .................................................. 0V to VIN Ambient Temperature (TA) ........................ –40°C to +125°C Junction Temperature (TJ) ........................ –40°C to +125°C Junction Thermal Resistance 6-pin 2mm × 2mm DFN (θJA) ............................. 90°C/W Electrical Characteristics(6) VIN = VOUT+1V; COUT = 1.0µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C≤ TJ ≤ +125°C, unless noted. Parameter Condition Output Voltage Accuracy Min. Typ. Max. Units Variation from nominal VOUT –2 +2 % Variation from nominal VOUT; –40°C to +125°C –3 +3 % VIN = VOUT +1V to 5.5V; IOUT = 100µA 0.02 0.6 %/V IOUT = 100µA to 300mA 0.03 0.6 % IOUT = 150mA IOUT = 300mA 50 100 100 200 mV mV IOUT = 0 to 300mA, EN = High 85 120 µA Ground Pin Current in Shutdown VEN = 0V 0.1 1 µA Ripple Rejection f = up to 1kHz; COUT = 1.0µF f = 1kHz to 20kHz; COUT = 1.0µF 65 42 Current Limit VOUT = 0V Output Voltage Noise COUT =1µF, 10Hz to 100kHz Line Regulation Load Regulation Dropout Voltage (7) (8) Ground Pin Current (9) 325 650 dB dB 875 120 mA µVRMS Enable Input Enable Input Voltage Enable Input Current Turn-on Time 0.2 Logic Low 1.1 Logic High V V VIL < 0.2V 0.01 µA VIH > 1.0V 0.01 µA 100 COUT = 1.0µF 30 µs TJ Rising 155 °C 5 °C Thermal Protection Over-temperature Shutdown Over-temperature Shutdown Hysteresis Notes: 2. Exceeding the absolute maximum ratings may damage the device. 3. The device is not guaranteed to function outside its operating ratings. 4. The maximum allowable power dissipation for any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maxmimum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 5. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF. 6. Specification for packaged product only. 7. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects are covered by the thermal regulation specification. 8. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. 9. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin current. July 10, 2015 3 Revision 2.3 Micrel, Inc. MAQ5300 Typical Characteristics Ground Pin Current vs. Output Current Ground Pin Current vs. Temperature 100 100 95 80 60 40 VIN = VOUT+1 VOUT = 2.8V COUT = 1µF 20 90 300mA 85 80 100µA 75 70 VIN = VOUT+1 VOUT = 2.8V COUT = 1µF 65 0 50 100 150 200 250 -40 300 -20 0 40 60 80 DROPOUT VOLTAGE (mV) -50 -40 -30 VIN = 3.8V VOUT = 2.8V COUT = 1µF IOUT = 300mA Res. Load 100 1000 150mA 50 50mA 100µA 25 -20 0 Output Voltage vs. Output Current OUTPUT VOLTAGE (V) 2.80 2.79 VIN == V Vin Vout+1V OUT+1V Vout = 2.8V 2.8V V OUT = Cout=1uF C OUT = 1µF 20 40 60 80 150 200 250 OUTPUT CURRENT (mA) July 10, 2015 50 VIN = VOUT+1 VOUT = 2.8V COUT = 1µF 25 100 120 140 50 0 300 3 3.2 2.5 100µA 2 1.5 300mA 1 1 2 3 4 SUPPLY VOLTAGE (V) 4 150 200 250 300 5 Output Voltage vs. Temperature 3 2.8 2.6 VIN = VOUT +1V VOUT = 2.8V COUT = 1µF IOUT = 100µA 2.4 2.2 VOUT = 2.8V COUT = 1µF 0 100 OUTPUT CURRENT (mA) 3.4 0 100 75 3.5 0.5 2.77 50 100 Output Voltage vs. Supply Voltage 2.81 0 125 TEMPERATURE (C) 2.82 5.5 0 -40 2.83 5 4.5 300mA 75 10000 4 Dropout Voltage vs. Output Current 100 FREQUENCY (kHz) 2.78 3.5 SUPPLY VOLTAGE (V) OUTPUT VOLTAGE (V) 10 VIN = VOUT+1 VOUT = 2.8V COUT = 1µF 65 3 0 1 100µA 70 150 VOUT = 2.8V COUT = 1 F 125 -60 0.1 75 100 120 140 DROPOUT VOLTAGE (mV) -70 PSRR (dB) 20 150 -80 0 0.01 80 Dropout Voltage vs. Temperature Power Supply Rejection Ratio -10 300mA 85 TEMPERATURE (C) OUTPUT CURRENT (mA) -20 90 60 60 0 OUTPUT VOLTAGE (V) GROUND CURRENT (µA) 95 100 GROUND CURRENT (µA) GROUND CURRENT (µA) 120 Ground Pin Current vs. Supply Voltage 2 6 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (C) Revision 2.3 Micrel, Inc. MAQ5300 Typical Characteristics (Continued) Current Limit vs. Supply Voltage Output Noise Spectral Density 700 10 VOUT = 0V TA = 25ºC 1 NOISE µV/√Hz CURRENT LIMIT (mA) 680 660 640 0.1 0.01 620 600 3 3.5 4 4.5 SUPPLY VOLTAGE (V) July 10, 2015 5 5.5 VIN = VOUT+1 VOUT = 2.8V COUT = 1µF LOAD = 50Ω 0.001 0.01 0.1 1 10 100 1000 FREQUENCY (Hz) 5 Revision 2.3 Micrel, Inc. MAQ5300 Functional Characteristics July 10, 2015 6 Revision 2.3 Micrel, Inc. MAQ5300 Functional Diagram Figure 1. MAQ5300 Block Diagram July 10, 2015 7 Revision 2.3 Micrel, Inc. MAQ5300 similar low impedance trace. If a ground plane is used, the capacitor ground terminal and GND pin should be connected to the ground plane with a via. Refer to the PCB recommended layout section for a typical layout. Application Information Enable/Shutdown The MAQ5300 comes with an active-high enable pin that allows the regulator to be disabled. Forcing the enable pin low disables the regulator and sends it into a “zero” off-mode-current state. In this state, current consumed by the regulator goes nearly to zero. Forcing the enable pin high enables the output voltage. The active-high enable pin uses CMOS technology and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. X7R dielectric-type ceramic capacitors are used because of their temperature performance. X7R-type capacitors have a stable dielectric and change capacitance by +/15% over their operating temperature range. As with the input capacitor, X5R capacitors may not meet the maximum ambient temperature specification and Z5U, Y5V and other lower quality dielectric capacitors must not be used to prevent stability and regulation problems. Additional high-frequency capacitors, such as smallvalued NPO dielectric-type capacitors, help filter out highfrequency noise. Input Capacitor The MAQ5300 is a high-performance, high bandwidth device that requires a well-bypassed input supply for optimal performance. A minimum 1µF X7R ceramic capacitor is required from the VIN pin to ground for stability and decoupling. The capacitor must be placed next to the VIN pin and the VIN pin to capacitor connection routed with a wide (low inductance) PCB trace. The ground terminal of the capacitor is connected directly to the GND pin with a similar low impedance trace. If a ground plane is used, the capacitor ground terminal and GND pin should be connected to the ground plane with a via. Refer to the PCB recommended layout section for a typical layout. X7R dielectric-type ceramic capacitors are used because of their –55°C to 125°C temperature range. X7R-type capacitors have a stable dielectric and change capacitance by ±15% over their operating temperature range. X5R dielectrics have a maximum temperature of only 85°C, while Z5U and Y5V and other lower quality dielectric capacitors must not be used as their capacitance range changes by as much as 50% to 60%. This change may cause problems with stability and regulation. Additional high-frequency capacitors, such as small-valued NPO dielectric-type capacitors, help filter out high-frequency noise. No-Load Stability The MAQ5300 is stable when operating at no load. Dropout Voltage An LDO’s dropout voltage is the minimum operating voltage difference between VIN and VOUT at a given output current. Once the dropout voltage is reached, lowering the input voltage will cause the output voltage to decrease and the LDO will cease to operate properly. The typical and worst case dropout voltages are listed in the electrical characteristic table. Thermal Considerations The MAQ5300 is designed to provide 300mA of continuous current. Maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. For example, given that the input voltage is 3.6V, the output voltage is 2.8V and the output current equals 300mA. The actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN – VOUT) IOUT + VIN IGND Larger value, ceramic, tantalum and aluminum electrolytic capacitors may be used at the input, in parallel with the ceramic input capacitor described above. Because this device is CMOS and the ground current is typically <100µA over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for this calculation. Output Capacitor The MAQ5300 requires an X7R ceramic output capacitor of 1µF or greater to maintain stability. The LDO is optimized for use with low-ESR ceramic chip capacitors. Higher ESR capacitors, such as aluminum electrolytic and tantalum may cause high frequency oscillation. The output capacitance can be increased, but performance has been optimized for a 1µF ceramic output capacitor and does not improve significantly with larger capacitance. PD = (3.6V – 2.8V) × 300mA PD = 0.24W To determine the maximum ambient operating temperature of the package, use the junction-to-ambient thermal resistance of the device and the following basic equation: The capacitor must be placed next to the VOUT pin and the VOUT pin to capacitor connection routed with a wide (low inductance) PCB trace. The ground terminal of the capacitor is connected directly to the GND plane with a July 10, 2015 PD(MAX) = 8 TJ(MAX) - TA JA Revision 2.3 Micrel, Inc. MAQ5300 TJ(max) = 125°C, the maximum junction temperature of the die, and θJA is the thermal resistance = 90°C/W. Therefore, a 2.8V application with 300mA of output current can accept an ambient operating temperature of 103°C. Substituting PD for PD(max) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. The junction-toambient thermal resistance is 90°C/W. A via can be placed under the package to maximize thermal performance. Refer to the PCB Layout Recommendations section for a typical layout. The maximum power dissipation must not be exceeded for proper operation. For a full discussion of heat sinking and thermal effects on voltage regulators, refer to the “Regulator Thermals” section of Micrel’s Designing with Low-Dropout Voltage Regulators handbook. This information can be found on Micrel's website at: For example, when operating the MAQ5300-2.8YML at an input voltage of 3.6V and 300mA load, the maximum ambient operating temperature TA can be determined as follows: http://www.micrel.com/_PDF/other/LDOBk_ds.pdf 0.24W = (125°C – TA)/(90°C/W) TA=103°C July 10, 2015 9 Revision 2.3 Micrel, Inc. MAQ5300 Typical Application Schematic Bill of Materials Item R1 Part Number CRCW0603100KFKEA Manufacturer Vishay Dale (11) C1, C2 06036C105MAT2A AVX U1 MAQ5300-3.3YML Micrel (12) (10) Description Qty. 100kΩ, 1%, 0603 resistor 1 1uF, 6.3V, X7R, 0603, Ceramic Capacitor 2 Automotive Qualified Single Output 300mA μCap LDO, 3.3V Fixed Output 1 Notes: 10. Vishay: www.vishay.com 11. AVX: www.avx.com 12. Micrel, Inc.: www.micrel.com July 10, 2015 10 Revision 2.3 Micrel, Inc. MAQ5300 PCB Layout Recommendations Top Layer Bottom Layer July 10, 2015 11 Revision 2.3 Micrel, Inc. MAQ5300 Package Information(13) 6-Pin 2mm x 2mm DFN (ML) Note: 13. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com. July 10, 2015 12 Revision 2.3 Micrel, Inc. MAQ5300 Recommended Landing Pattern(13) 6-Pin 2mm x 2mm DFN (ML) July 10, 2015 13 Revision 2.3 Micrel, Inc. MAQ5300 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high performance linear and power, LAN, and timing & communications markets. The Company’s products include advanced mixed-signal, analog & power semiconductors; high-performance communication, clock management, MEMs-based clock oscillators & crystal-less clock generators, Ethernet switches, and physical layer transceiver ICs. Company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products. Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and advanced technology design centers situated throughout the Americas, Europe, and Asia. Additionally, the Company maintains an extensive network of distributors and reps worldwide. Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this datasheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2014 Micrel, Incorporated. July 10, 2015 14 Revision 2.3