SPX3819S-L-1-2/TR

SPX3819 500mA Low-Noise LDO Voltage Regulator December 2019 Rev. 2.0.5 GENERAL DESCRIPTION APPLICATIONS • Portable Consumer Equipment The SPX3819 is a positive voltage regulator with a low dropout voltage and low noise output. In addition, this device offers a very low ground current of 800μA at 100mA output. The SPX3819 has an initial tolerance of less than 1% max and a logic compatible ON/OFF switched input. When disabled, power consumption drops to nearly zero. Other key features include reverse battery protection, current limit, and thermal shutdown. The SPX3819 includes a reference bypass pin for optimal low noise output performance. With its very low output temperature coefficient, this device also makes a superior low power voltage reference. • Portable Instrumentation • Industrial Equipment • SMPS Post Regulators FEATURES • Low Noise: 40μV Possible • High Accuracy: 1% • Reverse Battery Protection • Low Dropout: 340mV at Full Load • Low Quiescent Current: 90μA The SPX3819 is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. It is available in several fixed output voltage options or with an adjustable output voltage. • Zero Off-Mode Current • Fixed & Adjustable Output Voltages: − 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V & 5.0V Fixed Output Voltages − ≥1.235V Adjustable Output Voltages This device is offered in 8 pin NSOIC, 8 pin DFN and 5-pin SOT-23 packages. • Available in RoHS Compliant, Lead Free Packages: − 5-pin SOT-23, 8-pin SOIC and 8-pin DFN TYPICAL APPLICATION DIAGRAM Fig. 1: SPX3819 Application Circuit 1/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Input Voltage Range VIN ................................ 2.5V to 16V Enable Pin EN ............................................... 0.0V to VIN Junction Temperature Range ................. -40°C to +125°C Thermal Resistance1 ..................................................... θJA (SOT23-5)...............................................191°C/W θJA (NSOIC-8)............................................ 128.4°C/W θJA (DFN-8) ................................................... 59°C/W VIN, EN ..................................................... -20V to +20V Storage Temperature .............................. -65°C to 150°C Junction Temperature .......................................... 150°C Power Dissipation ................................ Internally Limited Lead Temperature (Soldering, 5 sec) ..................... 260°C ESD Rating (HBM - Human Body Model) .................... 1kV Note 1: The maximum allowable power dissipation is a function of maximum operating junction temperature, TJ(max) the junction to ambient thermal resistance, and the ambient θJA, and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is given: PD(max) = (TJ(max)-TA)/θJA, exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will go into thermal shutdown. ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Junction Temperature of TJ = 25°C only; limits applying over the full Operating Junction Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise indicated, VIN = VOUT + 1V (VIN = VOUT + 1.2V for 1.2V option), IL = 100µA, CL = 1µF, VEN ≥ 2.5V, TA= TJ = 25°C. Parameter Min. Output Voltage Tolerance Output Voltage Temperature Coefficient Typ. Max. -1 +1 -2 +2 57 0.04 Line Regulation Units % Conditions • ppm/°C 0.1 0.2 %/V • VIN = VEN = VOUT +1 ≤16V TA = 25°C to 85°C 0.2 Load Regulation 0.05 10 125 Dropout Voltage (VIN-VOUT) 2 180 340 Quiescent Current (IGND) 0.05 90 250 Ground Pin Current (IGND) 1.0 6.5 Ripple Rejection (PSRR) 0.4 60 80 175 250 350 450 550 700 3 8 150 190 650 900 2.0 2.5 25.0 30.0 70 % IL = 0.1mA to 500mA • mV • • • µA µA IL = 100µA IL = 50mA IL = 150mA IL = 500mA VENABLE ≤ 0.4V • • • mA VIN = VOUT +1 to 16V and VEN ≤ 6V VIN = VEN = VOUT +1 ≤ 8V • • VENABLE = 0.25V IL = 100µA IL = 50mA IL = 150mA IL = 500mA dB 2/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator Parameter Min. Current Limit (ILIMIT) Typ. 800 Max. Units 950 mA VOUT=0V µVRMS IL = 10mA, CL = 1.0µF, CIN = 1µF, (10Hz – 100kHz) 40 µVRMS IL = 10mA, CL = 1.0µF, CBYP = 1µF, CIN = 1µF, (10Hz – 100kHz) Input Voltage Level Logic Low (VIL) 0.4 2 0.01 3 ENABLE Input Current • 300 Output Noise (eNO) Input Voltage Level Logic High (VIH) Conditions 2 20 V OFF V ON µA VIL ≤ 0.4V VIH ≥ 2.0V Note 2: Not applicable to output voltage 2V or less. PIN ASSIGNMENT Fig. 2: SPX3819 Pin Assignment PIN DESCRIPTION Name Pin # Pin # Pin # nSOIC DFN SOT-23 Description VIN 2 3 1 Supply Input GND 5, 6, 7, 8 7 2 Ground VOUT 3 5 5 Regulator Output EN 1 1 3 Enable(input). CMOS compatible control input. Logic high – enable; logic low or open = shutdown ADJ 4 8 4 - 2, 4, 6 - BYP NC Adjustable part only. Feedback input. Connect to resistive voltagedivider network Fixed version only. Internal reference bypass pin. Connect 10nF to ground to reduce thermal noise on the output. No Connect 3/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator ORDERING INFORMATION(1) Part Number Operating Temperature Range Lead-Free Package Packaging Method SPX3819M5-L/TR SPX3819M5-L-1-2/TR SPX3819M5-L-1-5/TR SPX3819M5-L-1-8/TR SOT-23-5 SPX3819M5-L-2-5/TR SPX3819M5-L-3-0/TR SPX3819M5-L-3-3/TR Tape & Reel Yes(2) -40°C≤TJ≤+125°C SPX3819M5-L-5-0/TR SPX3819R2-L/TR DFN-8 SPX3819R2-L-1-2/TR SPX3819S-L/TR NSOIC-8 SPX3819S-L-5-0/TR NOTES: 1. Refer to www.maxlinear.com/SPX3819 for most up-to-date Ordering Information 2. Visit www.maxlinear.com for additional information on Environmental Rating. 4/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator TYPICAL PERFORMANCE CHARACTERISTICS Fig. 3: Ground Current vs Load Current Fig. 4: Ground Current vs Input Voltage Fig. 5 Ground Current vs Load Current in Dropout Fig. 6 Output Voltage vs Input Voltage Fig. 7 Dropout Voltage vs Load Current Fig. 8 Output Voltage vs Load Current 5/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator Fig. 9 Ground Current vs Temperature with 100μA Load Fig. 10 Ground Current vs Temperature with 50mA Load Fig. 11 Ground Current vs Temperature with 500mA Load Fig. 12 Ground Current vs Temperature in Dropout Fig. 13 ENABLE Voltage, ON threshold, vs Input Voltage Fig. 14 Output Voltage vs Temperature 6/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator Fig. 15 Output Noise vs Bypass Capacitor Value IL = 10mA, Fig. 16 Line Transient Response for 3.3V Device 10Hz - 100kHz Fig. 17 Load Transient Response for 3.3V Device APPLICATION INFORMATION capacitor works in most application circuits, but the same stability often can be obtained with a 1μF tantalum electrolytic. The SPX3819 requires an output capacitor for device stability. Its value depends upon the application circuit. In general, linear regulator stability decreases with higher output currents. In applications where the SPX3819 is sourcing less current, a lower output capacitance may be sufficient. For example, a regulator outputting only 10mA, requires approximately half the capacitance as the same regulator sourcing 150mA. With the SPX3819 adjustable version, the minimum value of output capacitance is a function of the output voltage. The value decreases with higher output voltages, since closed loop gain is increased. TYPICAL APPLICATIONS CIRCUITS Bench testing is the best method for determining the proper type and value of the capacitor since the high frequency characteristics of electrolytic capacitors vary widely, depending on type and manufacturer. A high quality 2.2μF aluminum electrolytic For fixed voltage options only. A 10nF capacitor on the BYP pin will significantly reduce output noise, but it may be left unconnected if the output noise is not a major concern. The SPX3819 start-up speed is inversely proportional to the size of the BYP capacitor. 7/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator Applications requiring a slow rampup of the output voltage should use a larger CBYP. However, if a rapid turn-on is necessary, the BYP capacitor can be omitted. The SPX3819 in Figure 19 illustrates a typical adjustable output voltage configuration. Two resistors (R1 and R2) set the output voltage. The output voltage is calculated using the formula: The SPX3819’s internal reference is available through the BYP pin. VOUT = 1.235V x [1 + R1/R2] Figure 18 represents a SPX3819 standard application circuit. The EN (enable) pin is pulled high (>2.0V) to enable the regulator. To disable the regulator, EN < 0.4V. R2 must be >10kΩ and for best results, R2 should be between 22kΩ and 47kΩ. Fig. 19: Typical Adjustable Output Voltage Configuration Fig. 18: Standard Application Circuit 8/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator MECHANICAL DIMENSIONS 8-PIN SOICN 9/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator MECHANICAL DIMENSIONS (CONTINUED) 10/13 8-PIN 2X3 DFN Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator 8-PIN 2X3 DFN RECOMMENDED LAND PATTERN AND STENCIL 11/13 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator MECHANICAL DIMENSIONS (CONTINUED) 12/13 5-PIN SOT-23 Rev. 2.0.5 SPX3819 500mA Low-Noise LDO Voltage Regulator REVISION HISTORY Revision Date Description 2.0.0 08/23/12 2.0.1 12/02/13 2.0.2 05/20/14 2.0.3 08/31/16 Updated logo and Ordering Information table. 2.0.4 07/19/18 Update to MaxLinear logo. Updated format and Ordering Information. Clarified ADJ and BYP pin. Correct y-axis on Figure 14. Updated ESD rating. 2.0.5 12/05/19 Corrected table alignment on last 5 specs of the Electrical Specifications table. Reformat of Datasheet Addition of SPX3819R2-L and SPX3819R2-L/TR part numbers Added Storage Temperature Range and Junction Temperature in ABS MAX Ratings. Updated package drawings and corrected DFN-8 package marking information [ECN 1423-03 6/3/14] CORPORATE HEADQUARTERS: 5966 La Place Court Suite 100 Carlsbad, CA 92008 Tel.: +1 (760) 692-0711 Fax: +1 (760) 444-8598 www.maxlinear.com The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by Maxlinear, Inc. Maxlinear, Inc. Assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. Complying with all applicable copyright laws is the responsibility of the user. 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