SPX5205 (R) 150mA, Low-Noise LDO Voltage Regulator Fixed Output Voltage FEATURES Low Noise Output LDO: 40VRMS Possible 1% Initial Accuracy Very Low Quiecent Current: 70A Low Dropout Voltage (210mV at 150mA) Current and Thermal Limiting Reverse-Battery Protection Wide Range of Fix Output Voltages:1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V, 3.3V and 5.0V Zero Off-Mode Current Small 5-Pin SOT-23 Pin Compatible to MIC5205/MAX8877 (fixed Options Only) and AS3815 5 4 SPX5205 5 Pin SOT-23 1 2 3 VIN GND EN Adjustable Output Voltage ADJ/BYP VOUT 5 4 SPX5205 5 Pin SOT-23 APPLICATIONS BYP VOUT PDA Battery Powered Systems Cellular Phone Cordless Telephones Radio Control Systems Laptop, Palmtop, and Notebook Computers 1 2 3 VIN GND EN Now Available in Lead Free Packaging Portable Consumer Equipment Portable Instrumentation Bar Code Scanners SMPS Post-Regulator DESCRIPTION The SPX5205 is a positive voltage regulator with very low dropout voltage, output noise and ground current (750A at 100mA). VOUT has a tolerance of less than 1% and is temperature compensated. Fixed output voltages 1.2V, 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V, 3.3V, and 5.0V and an adjustable version are available in a small 5-pin SOT-23 package. Other key features include zero off-mode current, reverse battery protection, thermal shutdown and current limit. The SPX5205 is an excellent choice for use in batterypowered applications, and where power conservation is desired such as: cellular/ cordless telephones, radio control systems, and portable computers. TYPICAL APPLICATION CIRCUIT VIN 1 VOUT 5 + 2 + 1.0F SPX5205 GND 3 4 EN BYP (Optn) ENABLE may be tied directly to VIN TOP View Date:12/18/04 SPX5205 150mA, Low Noise LDO Voltage Regulator 1 (c) Copyright 2004 Sipex Corporation ABSOLUTE MAXIMUM RATINGS Thermal Shutdown .................................................................... Internally Limited Lead Temperature (Soldering, 5 seconds) ................................................. 260C Operating Junction Temperature Range .................................... -40C to +125C Input Supply Voltage ......................................... -20V to +20V Enable Input Voltage ......................................... -20V to +20V RECOMMENDED OPERATING CONDITIONS Input voltage ..................................................................................... +2.5V to 16V Operating Junction Temperature Range .................................... -40C to +125C Enable Input Voltage .............................................................................. 0V to VIN SOT-23-5 (JA) ................................................................................... See Note 1 ELECTRICAL CHARACTERISTICS TJ=25C, VIN = VOUT + 1V, IL = 100A, CL = 1F, and VENABLE 2.4V. The denotes the specifications which apply over full temperature range -40C to +85C, unless otherwise specified. PARAMETER Output Voltage Tolerance (VOUT) MIN -1 -2 Output Voltage Temperature Coefficient Line Regulation TYP MAX +1 +2 57 0.03 0.1 0.2 0.1 0.2 0.5 30 50 70 140 190 230 180 250 300 210 275 350 0.05 1 5 70 125 150 350 600 800 750 1000 1500 1300 1900 2500 70 360 500 300 Load Regulation Dropout Voltage (See Note 2) (VIN - VO) Quiescent Current (IGND) Ground Pin Current (IGND) Ripple Rejection (PSRR) Current Limit (ILIMIT) Output Noise (eNO) 40 Input Voltage Level Logic Low (VIL) Input Voltage Level Logic High (VIL) ENABLE Input Current UNITS %VNOM ppm/C %/V CONDITIONS VIN = VOUT + 1V to 16V % IL = 0.1mA to 150mA mV IL = 100A mV IL = 50mA mV IL = 100mA mV IL = 150mA A A VENABLE 0.4V VENABLE 0.25V IL = 100A IL = 50mA IL = 100mA IL = 150mA dB mA VRMS VRMS 0.4 V 2.0 VOUT = 0V IL = 10mA, CL = 1F, CIN= 1F (10Hz - 100kHz.) IL = 10mA, CL = 10F, CBYP = 1F,CIN=1F,(10Hz - 100kHz) OFF ON 0.01 3 2 20 A VIL 0.4V VIH 2.0V 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, JA, and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is given: PD (max) = (TJ (max) - TA)/JA, exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will go into thermal shutdown. The JA of the SPX5205 is 220C/W mounted on a PC board. Note 2: Not applicable to output voltages of less than 2V. Date:12/18/04 SPX5205 150mA, Low Noise LDO Voltage Regulator 2 (c) Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 1.40 110 90 IGND (A) 1.00 IGND (mA) 100 3.3V Device VIN= 3.2V CL = 1.0F 1.20 0.80 0.60 0.40 80 70 60 VO = 3.3V CL = 1.0F IL = 100A 50 0.20 40 30 0.00 0 50 100 150 4 6 8 IL (mA) 12 14 16 VIN (V) Ground Current vs Input Voltage Ground Current vs Load Current 3.340 2.00 3.335 3.3V Device VIN= 4.3V CL = 1.0F 3.330 VOUT (V) 1.50 IGND (mA) 10 1.00 3.325 3.320 3.315 3.310 3.305 3.3V Device CL= 1.0F IL = 100A 3.300 0.50 3.295 3.290 0.00 4 0 50 100 150 8 10 12 14 16 VIN (V) IL (mA) Output Voltage vs Input Voltage Ground Current vs Load Current in Dropout Date:12/18/04 6 SPX5205 150mA, Low Noise LDO Voltage Regulator 3 (c) Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 3.310 VO=3.3V VIN= 3.2V CL = 1.0F 3.3V Device VIN= 4.3V CL = 1.0F 3.308 150 VOUT (V) Dropout (mV) 200 100 50 3.306 3.304 3.302 3.300 0 0 50 100 0 150 50 IL (mA) 90.0 950 VOUT= 3.3V VIN= 4.3V CL= 1.0F IL = 100A 850 IGND (A) IGND (A) 80.0 70.0 750 650 60.0 550 0 20 40 60 450 -40 80 100 120 VOUT = 3.3V VIN = 4.3V CL= 1.0F IL = 100mA -20 0 20 40 60 80 100 120 Temperature (C) Temperature (C) Ground Current vs Temperature at ILOAD =100mA Ground Current vs Temperature at ILOAD =100A Date:12/18/04 150 Output Voltage vs Load Current Dropout Voltage vs Load Current 50.0 -40 -20 100 IL (mA) SPX5205 150mA, Low Noise LDO Voltage Regulator 4 (c) Copyright 2004 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 2.30 3.400 2.20 3.360 3.340 VOUT (V) IGND (mA) 2.00 VOUT= 3.3V VIN= 4.3V CL= 1.0F 3.380 VOUT= 3.3V VIN= 4.3V CL= 1.0F IL = 150mA 2.10 1.90 1.80 1.70 3.320 3.300 3.280 3.260 1.60 3.240 1.50 3.220 1.40 -40 -20 0 20 40 60 3.200 -40 80 100 120 -20 20 40 60 80 100 120 Temperature (C) Temperature (C) Output Voltage vs Temperature Ground Current in Dropout vs Temperature 1.60 350 VOUT =3.3V CL= 1.0A IL = 100A 1.50 Cin = 1uFT, Cout = 1uFT Cin = 1uFT, Cout = 2.2uFT Cin = 1uFT Cout = 10uFT 300 1.40 250 1.30 uV RMS VEN, On Threshold (V) 0 1.20 200 150 1.10 100 1.00 50 0.90 0.80 0 4 6 8 10 12 14 1 16 10 100 1000 10000 Bypass Cap (pF) 100000 1000000 VIN (V) Output Noise vs. Bypass Capacitor Value ENABLE Voltage, ON threshold vs Input Voltage Date:12/18/04 SPX5205 150mA, Low Noise LDO Voltage Regulator 5 (c) Copyright 2004 Sipex Corporation APPLICATION INFORMATION The SPX5205 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 SPX5205 is putting out less current, a lower output capacitance may be sufficient. For example, a regulator sourcing only 10mA, requires approximately half the capacitance as the same regulator sourcing 150mA. portional to the size of the BYP capacitor. Applications requiring a slow ramp-up of the output voltage should use a larger CBYP. However, if a rapid turn-on is necessary, the BYP capacitor can be omitted. 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 2.2F aluminum electrolytic capacitor works in most application circuits, but the same stability often can be obtained with a 1F tantalum electrolytic. The Typical Application Circuit shown on page 1 represents a SPX5205 standard application circuit. The EN (enable) pin is pulled high (>2.0V) to enable the regulator. To disable the regulator, EN < 0.4V. The SPX5205's internal reference is available through the BYP pin. The SPX5205 in Figure 1 illustrates a typical adjustable output voltage configuration. Two resistors (R1 and R2) set the output voltage. The output voltage is calculated using the formula: With the SPX5205 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. VOUT = 1.235V x ( 1 + R1/R2) Typical Applications Circuits R2 must be > 10 k and for best results, R2 should be between 22 k and 47k. A capacitor placed between adjustable and ground will provide improved noise performance. A 10nF capacitor on BYP pin will significantly reduce output noise but it may be left unconnected if the output noise is not a major concern. The SPX5205 start-up speed is inversely pro- VIN 1 VOUT 5 R1 2 + + SPX5205 GND 3 4 ADJ EN Hi-ON Lo-OFF BYP (Optn) R2 TOP View Figure 1. Typical Adjustable Output Voltage. Date:12/18/04 SPX5205 150mA, Low Noise LDO Voltage Regulator 6 (c) Copyright 2004 Sipex Corporation PACKAGE: 5 PIN SOT-23 D e1 N N/2 +1 E/2 E1/2 B E E1 SEE VIEW C B VIEW A-A 1 2 N/2 e O b Gauge Plane L Seating Plane O L O L1 VIEW C 5 Pin SOT-23 JEDEC MO-178 (AA) Variation MIN NOM MAX SYMBOL A 1.45 A1 0 0.15 A2 0.9 1.15 1.3 b 0.3 0.5 c 0.08 0.22 D 2.90 BSC E 2.80 BSC E1 1.60 BSC e 0.95 BSC e1 1.90 BSC L 0.3 0.45 0.6 L1 0.60 REF L2 0.25 BSC O 0 4 8 o 5 10 15 A2 A Seating Plane SIDE VIEW A1 b WITH PLATING c Note: Dimensions in (mm) BASE METAL Date:12/18/04 SPX5205 150mA, Low Noise LDO Voltage Regulator 7 SECTION B-B (c) Copyright 2004 Sipex Corporation ORDERING INFORMATION PART NUMBER TOP MARK ACC. OUTPUT VOLTAGE PACKAGE SPX5205M5 .............. H1WW ................. 1% ...................... Adj ................... 5 Pin SOT-23 SPX5205M5/TR ........ H1WW ................. 1% ...................... Adj ................... 5 Pin SOT-23 SPX5205M5-1.2 .......... R12 ................... 1% ..................... 1.2V .................. 5 Pin SOT-23 SPX5205M5-1.2/TR ..... R12 ................... 1% ..................... 1.2V .................. 5 Pin SOT-23 SPX5205M5-1.5 .......... R15 ................... 1% ..................... 1.5V .................. 5 Pin SOT-23 SPX5205M5-1.5/TR ..... R15 ................... 1% ..................... 1.5V .................. 5 Pin SOT-23 SPX5205M5-1.8 .......... R18 ................... 1% ..................... 1.8V .................. 5 Pin SOT-23 SPX5205M5-1.8/TR ..... R18 ................... 1% ..................... 1.8V .................. 5 Pin SOT-23 SPX5205M5-2.0 .......... R20 ................... 1% ..................... 2.0V .................. 5 Pin SOT-23 SPX5205M5-2.0/TR ..... R20 ................... 1% ..................... 2.0V .................. 5 Pin SOT-23 SPX5205M5-2.5 .......... R25 ................... 1% ..................... 2.5V .................. 5 Pin SOT-23 SPX5205M5-2.5/TR ..... R25 ................... 1% ..................... 2.5V .................. 5 Pin SOT-23 SPX5205M5-2.8 .......... R28 ................... 1%......................2.8V...................5 Pin SOT-23 SPX5205M5-2.8/TR ..... R28 ................... 1%......................2.8V...................5 Pin SOT-23 SPX5205M5-3.0............R30.....................1% .....................3.0V...................5 PIN SOT-23 SPX5205M5-3.0/TR......R30.....................1% .....................3.0V...................5 PIN SOT-23 SPX5205M5-3.3 .......... R33 ................... 1% ..................... 3.3V .................. 5 Pin SOT-23 SPX5205M5-3.3/TR ..... R33 ................... 1% ..................... 3.3V .................. 5 Pin SOT-23 SPX5205M5-5.0 .......... R50 ................... 1% ..................... 5.0V .................. 5 Pin SOT-23 SPX5205M5-5.0/TR ..... R50 ................... 1% ..................... 5.0V .................. 5 Pin SOT-23 Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX5205M5-5.0/TR = standard; SPX5205M5-5.0-L/TR = lead free Note that for top markings on small packages, when the bar is added to indicate lead-free parts, it can be mistaken as a "1" or an "I". /TR = Tape and Reel Pack quantity is 2,500 for 5pin SOT-23 Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Date:12/18/04 SPX5205 150mA, Low Noise LDO Voltage Regulator 8 (c) Copyright 2004 Sipex Corporation