SPX2815 1.5A Low Dropout Voltage Regulator APPLICATIONS ■ Desktop PCs, Servers ■ Powering VGA and Sound Cards ■ Cordless Phones ■ Battery Chargers ■ Adjustable Power Supplies ■ Portable Instrumentation ■ SMPS Post-Regulator ■ Constant Current Regulators ■ Disk Drives FEATURES ■ Guaranteed 1.5A Output Current ■ Three Terminal Adjustable or Fixed 2.5V, 3.3V and 5.0V ■ Low Quiescent Current ■ Low Dropout Voltage of 1.1V @ 1.5A ■ 0.1% Line and 0.1% Load Regulation ■ Stable with 10uF Ceramic Capacitor ■ Overcurrent and Thermal Protection ■ Available Packages: TO-252, TO-220, and TO-263 ■ Similar to Industry Standard LT1086/ LT1586 Refer to Page 5 for Pinouts Now Available in Lead Free Packaging DESCRIPTION The SPX2815 is a low power positive-voltage regulator designed to satisfy moderate power requirements with a cost effective, small footprint solution. This device is an excellent choice for use in battery-powered applications and portable computers. The SPX2815 features very low quiescent current and a low dropout voltage of 1.1V at a full load. As output current decreases, quiescent current flows into the load, increasing efficiency. SPX2815 is available in adjustable or fixed 2.5V, 3.3V and 5.0V output voltages. The SPX2815 is offered in several 3-pin surface mount packages: TO-252, TO-220 and TO-263. An output capacitor of 10μF ceramic or tantalum provides unconditional stability. FUNCTIONAL DIAGRAM (Adjustable) VIN + Current Limit VOUT ICL Thermal Limit _ AMP + 1.25V VREF + – ADJ/GND IADJ ~ 50μA – I TL Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator 1 © 2006 Sipex Corporation ABSOLUTE MAXIMUM RATINGS Operating Junction Temperature Range.....-40°C to +125°C Input Supply Voltage .................................................... +10V Input to Output Voltage ................................................ +8.8V ESD Rating .............................................................. 2kV min Power Dissipation.......................................Internally Limited Lead Temperature (soldering, 5 seconds) ...............260°C Storage Temperature Range.......................-65°C to +150°C ELECTRICAL CHARACTERISTICS at VIN=VOUT + 1.5V, TA = 25°C, CIN = COUT = 10μF, IOUT =10mA, unless otherwise specified. The Boldface applies over the full operating temperature range. PARAMETER MIN 2.5V Version Output Voltage TYP MAX MIN SPX2815A TYP MAX UNITS CONDITIONS SPX2815 2.475 2.500 2.450 2.525 2.450 2.500 2.550 2.425 2.550 2.575 V IOUT = 10mA, VIN =4.5V 10mA ≤ IOUT ≤ 1.5A, 4.25V ≤ VIN ≤ 10V 3.267 3.300 3.234 3.333 3.234 3.300 3.366 3.201 3.366 3.399 V IOUT = 10mA, VIN =5V 10mA ≤ IOUT ≤ 1.5A, 4.75V ≤ VIN ≤ 10V 4.950 5.000 4.900 5.050 4.900 5.000 5.100 4.850 5.100 5.150 V IOUT=10mA, VIN=7V 10mA ≤ IOUT ≤ 1.5A, 6.50V ≤ VIN ≤ 10V 1.238 1.250 1.225 1.262 1.225 1.250 1.275 1.212 1.275 1.287 V IOUT=10mA, (VIN - VOUT )= 2V 10mA≤IOUT≤ 1.5A, 1.5V≤(VIN-VOUT)≤ 10V 3.30V Version Output Voltage 5.0V Version Output Voltage All Voltage Options Reference Voltage Output Voltage Temperature Stability 0.3 Line Regulation 0.1 0.1 0.1 0.2 0.2 0.2 0.1 0.1 0.1 0.2 0.2 0.2 % 4.25V≤VIN≤ 10V,VOUT=2.5V,IOUT=10mA 4.75V≤VIN≤ 10V,VOUT=3.3V,IOUT=10mA 6.50V≤VIN≤ 10V,VOUT=5.0V,IOUT=10mA Load Regulation 0.1 0.1 0.1 0.3 0.3 0.3 0.1 0.1 0.1 0.3 0.3 0.3 % 10mA≤IOUT≤ 1.5A, VOUT=2.5V 10mA≤IOUT≤ 1.5A, VOUT=3.3V 10mA≤IOUT≤ 1.5A, VOUT=5.0V Dropout Voltage (Note 2) 1.00 1.10 1.00 1.10 V 1.2 1.2 IOUT=0.5A IOUT=1.5A 4 10 4 10 mA Fixed voltage versions 50 120 50 120 μA A (VIN-VOUT)=5V 0.01 0.1 %/W 25°C, 30mS pulse 75 dB fRIPPLE=120Hz, (VIN-VOUT)=2V, VRIPPLE=1VPP Quiescent Current Adjust Pin Current Current Limit 2.5 Thermal Regulation Ripple Rejection 0.5 2.5 0.01 60 % 75 0.1 60 Long Term Stability 0.03 0.03 % 125°C, 1000Hrs RMS Output Noise 0.003 0.003 % % of VOUT, 10Hz≤f≤10kHz Thermal Resistance 3 29.3 3 31.4 6 50 3 29.3 3 31.4 6 50 °C/W TO-220 Junction to Case, at Tab TO-220 Junction to Ambient TO-263 Junction to Case, at Tab TO-263 Junction to Ambient TO-252 Junction to Case, at Tab TO-252 Junction to Ambient Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator 2 © 2006 Sipex Corporation TYPICAL PERFORMANCE CHARACTERISTICS 1.275 3.325 1.27 3.315 Vout (V) Vout (V) 3.320 3.310 3.305 3.300 4.5 6.5 8.5 10.5 12.5 14.5 1.265 1.26 1.255 1.25 1.245 1.24 1.235 1.23 1.225 -50 1.25v Adj -30 -10 10 Vin (V) 70 90 110 130 Figure 2. VOUT vs Temperature, VIN=2.5V, IOUT=10mA 3.38 2.5v Adj 2.5v Fixed 3.3v Adj 3.3v Fixed 3.36 3.34 Vout (V) Vout (V) 50 Temp (C) Figure 1. Line Regulation for SPX2815U-3.3; IOUT=10mA 2.55 2.54 2.53 2.52 2.51 2.5 2.49 2.48 2.47 2.46 2.45 -50 30 3.32 3.3 3.28 -30 -10 10 30 50 Temp (C) 70 90 110 3.26 -50 130 -30 -10 10 30 50 70 90 110 130 Temp (C) Figure 3. VIN=4.0V, IOUT=10mA Figure 4. VIN=5.0V, IOUT=10mA APPLICATION INFORMATION Output Capacitor tions. Special care needs to be taken during continuous load conditions such that the maximum junction temperature does not exceed 125°C. Thermal protection is activated at >179°C and deactiviated at <165°C. To ensure the stability of the SPX2815, an output capacitor of at least 10μF (ceramic or tantalum) or 22μF (aluminum) is required. The value may change based on the application requirements of the output load or temperature range. The value of Equivalent Series Resistance (ESR) can vary based on the type of capacitor used in the applications to guarantee stability. The recommended value for ESR is 0.5Ω or less. A larger value of output capacitance (up to 100μF) can improve the load transient response. The thermal interaction from other components in the application can affect the thermal resistance of the SPX2815. The actual thermal resistance can be determined with experimentation. SPX2815 power dissipation is calculated as follows: PD = (VIN - VOUT)(IOUT) Soldering Methods The SPX2815 die is attached to the heatsink lead which exits opposite the input, output, and ground pins. Maximum Junction Temperature range: TJ = TA(max) + PD* θJA (thermal resistance, junction-to-ambient) Thermal Characteristics Maximum junction temperature must not exceed 125°C. The SPX2815 features internal thermal limiting to protect the device during overload condi- Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator 3 © 2006 Sipex Corporation APPLICATION INFORMATION: Continued Ripple Rejection Ripple rejection for the adjustable version is shown in Figure 5. Ripple rejection can be improved by adding a capacitor between the ADJ pin and ground as shown in Figure 8. When ADJ pin bypassing is used, the value of the output capacitor required increases to its maximum. If the ADJ pin is not bypassed, the value of the output capacitor can be lowered to 22μF for an electrolytic aluminum capacitor or 10μF for a solid tantalum capacitor (Fig 7). However, the value of the ADJ-bypass capacitor should be chosen with respect to the following equation: C= Output Voltage The output of the adjustable regulator can be set to any voltage between 1.25V and 15V. The value of VOUT can be quickly approximated using the formula VOUT=1.25 *(R1 + R2)/R1 A small correction to this formula is required depending on the values of resistors R1 and R2, since the adjustable pin current (approx 50μA) flows through R2. When IADJ is taken into account, the formula becomes _______1______-_ ( 6.28 * FR * R1 ) Where C = value of the capacitor in Farads (select an equal or larger standard value), FR = ripple frequency in Hz, R1 = value of resistor R1 in Ohms. VOUT = VREF(1+ (R2/R1)) + IADJ * R2 where VREF=1.25V If an ADJ-bypass capacitor is used, the amplitude of the output ripple will be independent of the output voltage. If an ADJ-bypass capacitor is not used, the output ripple will be proportional to the ratio of the output voltage to the reference voltage: M = VOUT / VREF Layout Considerations Parasitic line resistance can degrade load regulation. In order to avoid this, connect R1 directly to VOUT as illustrated in Figure 13. For the same reason, R2 should be connected to the negative side of the load. Where M = multiplier for the ripple seen when the ADJ pin is optimally bypassed. Ripple Rejection, Db VREF =1.25V 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 V IN IN 4.7μF + SPX2815 VOUT OUT C1 C2 ADJ R1 10 100 1000 10000 100000 IOUT = 1000000 VREF IOUT LOAD R1 Frequency, Hz Figure 6. Current Source Figure 5. Ripple Rejection; Vin=3.3V, Vout=1.8V (adj.), Iload=200mA Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator 4 © 2006 Sipex Corporation APPLICATION INFORMATION: Continued SPX2815 (Note A) V IN VIN SPX2815 IN 4.7μF + 4.7μF VOUT ADJ R1 330Ω 1% C2 C1 VREF ADJ I ADJ 50μA R1 10μF *C 1 improves ripple rejection. ZC should be ~ R1 at ripple frequency R2 VOUT = V REF (1+R 2 /R1 ) +I ADJ R 2 Note A: VIN(MIN) = (Intended VOUT ) + (V Figure 7. Typical Adjustable Regulator VIN (Note A) 330W 1% + ADJ + 4.7μF DROPOUT (MAX) ) VOUT ADJ 10μF Connect R to Case of Regulator R1 1kΩ 1% 1k C1 10μF* SPX2815 1K 2N3904 + R P Parasitic Line Resistance 5V OUT IN R2 1kΩ, 1% Figure 8. Improving Ripple Rejection SPX2815 VIN TTL Input 5V OUT + VOUT OUT IN Connect R2 to Load RL R2 Note A: VIN(MIN) = (Intended VOUT ) + (VDROPOUT (MAX) ) Figure 9. 5V Regulator with Shutdown Figure 10. Recommended Connections for Best Results PINOUTS TO-252 (R) 1 2 TO-220-3 (U) 3 1 1 ADJ/GND V OUT TO-263-3 (T) 2 2 3 3 V IN ADJ/GND Front View ADJ/GND V OUT V IN Top View V OUT V IN Front View Note: Tab is connected to Pin 2 (Vout) Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator 5 © 2006 Sipex Corporation PACKAGE: 3 PIN TO-263 E Seating Plane A E/2 C2 L1 SIDE VIEW H D 1 2 Chamfer Optional c 3 e See Detail C b b2 Gauge Plane Seating Plane FRONT VIEW θ L3 A1 L DETAIL C Thermal Pad 3 Pin TO-263 JEDEC TO-263 (L1) SYMBOL D1 BACK VIEW E1 Date: 6/21/06 Rev C Inches Controlling Dimension MIN NOM MAX A 0.160 0.190 A1 0.000 0.010 b 0.020 0.039 b2 0.045 0.070 c 0.015 0.029 c2 0.045 0.065 D 0.330 0.380 D1 0.270 E 0.380 0.420 E1 0.245 e .100 BSC H 0.575 0.625 L 0.070 0.110 L1 0.066 L3 .010 BSC O 0˚ 8˚ SIPEX Pkg Signoff Date/Rev: SPX2815 1.5A Low Dropout Voltage Regulator 6 Variation AA Millimeters Conversion Factor: 1 Inch = 25.40 mm MIN NOM MAX 4.06 4.83 0.00 0.25 0.51 0.99 1.14 1.78 0.38 0.74 1.14 1.65 8.38 9.65 6.86 9.65 10.67 6.22 2.54 BSC 14.61 15.88 1.78 2.79 1.68 0.25 BSC 0˚ 8˚ JL Aug5-05 / Rev A © 2006 Sipex Corporation PACKAGE: 3 PIN TO-220 Thermal Pad E E2 øP Q (H1) D2 D D1 1 L1 FRONT VIEW b2 BACK VIEW L e1 e A b Seating Plane A1 H1 Chamfer Optional A2 Date: 6/21/06 Rev C 3 Pin TO-220 SYMBOL SIDE VIEW C E1 JEDEC TO-220 Dimensions in Inches: Controlling Dimension MIN NOM A 0.140 A1 0.020 A2 0.080 b 0.015 0.027 b2 0.045 0.057 c 0.014 D 0.560 D1 0.330 D2 0.480 E 0.380 E1 0.270 E2 e .100 BSC e1 .200 BSC H1 0.230 L 0.500 L1 0.139 ΦP Q 0.100 SIPEX Pkg Signoff Date/Rev: MAX 0.190 0.055 0.115 0.040 0.070 0.024 0.650 0.355 0.507 0.420 0.350 0.030 0.270 0.580 0.250 0.161 0.135 SPX2815 1.5A Low Dropout Voltage Regulator 7 Variation AB Dimensions in Millimeters: Conversion Factor: 1 Inch = 25.40 mm MIN NOM MAX 3.56 4.83 0.51 1.27 2.03 2.79 0.25 0.51 1.02 1.14 1.45 1.78 0.25 0.51 14.22 16.51 8.38 8.89 12.19 12.70 9.65 10.67 6.86 8.89 0.76 2.54 BSC 5.08 BSC 5.84 6.86 12.70 14.73 6.35 3.30 4.06 2.54 3.30 JL Aug4-05 / Rev A © 2006 Sipex Corporation PACKAGE: 3 PIN TO-252 E1 E b3 L3 D1 D 1 2 H 3 (L1) L4 L5 BACK VIEW e b2 b θ1 FRONT VIEW SIDE VIEW L Gauge Plane A C2 L2 θ c 3 Pin TO-252 SYMBOL A A1 b b2 b3 c c2 D D1 E E1 e H L L1 L2 L3 L4 L5 ø ø1 Date: 6/21/06 Rev C Seating Plane A1 JEDEC TO-252 Dimensions in Inches: Controlling Dimension MIN 0.086 0.025 0.030 0.195 0.018 0.018 0.235 0.205 0.250 0.170 NOM 0.240 .090 BSC 0.370 0.055 0.060 .108 REF .020 BSC 0.035 0.045 0º 0º SIPEX Pkg Signoff Date/Rev: MAX 0.094 0.005 0.035 0.045 0.215 0.024 0.035 0.245 0.265 0.410 0.070 0.050 0.040 0.060 10º 15º Variation AA Dimensions in Millimeters Conversion Factor: 1 Inch = 25.40 mm MIN NOM MAX 2.18 2.39 0.13 0.64 0.89 0.76 1.14 4.95 5.46 0.46 0.61 0.46 0.89 5.97 6.10 6.22 5.21 6.35 6.73 4.32 2.29 BSC 9.4 10.41 1.4 1.52 1.78 2.74 REF 0.51 BSC 0.89 1.27 1.02 1.14 1.52 0º 10º 0º 15º JL Aug4-05/Rev A SPX2815 1.5A Low Dropout Voltage Regulator 8 © 2006 Sipex Corporation ORDERING INFORMATION PART NUMBERS ACC. TOP MARK OUTPUT VOLTAGE SPX2815AR ............................. 1% .......... SPX2815ARYYWW..............Adj .................. SPX2815AR/TR ....................... 1% .......... SPX2815ARYYWW..............Adj .................. SPX2815AR-2-5 ...................... 1% ......... SPX2815AR25YYWW...........2.5V ................ SPX2815AR-2-5/TR ................. 1% ......... SPX2815AR25YYWW...........2.5V ................ SPX2815AR-3-3 ...................... 1% ......... SPX2815AR33YYWW...........3.3V ................ SPX2815AR-3-3/TR ................. 1% ......... SPX2815AR33YYWW...........3.3V ................ SPX2815AR-5-0 ...................... 1% ......... SPX2815AR50YYWW...........5.0V ................ SPX2815AR-5-0/TR ................. 1% ......... SPX2815AR50YYWW...........5.0V ................ SPX2815AT ............................. 1% ........... SPX2815ATYYWW..............Adj .................. SPX2815AT/TR ....................... 1% ........... SPX2815ATYYWW..............Adj .................. SPX2815AT-2-5 ....................... 1% ......... SPX2815AT25YYWW...........2.5V ................ SPX2815AT-2-5/TR ................. 1% ......... SPX2815AT25YYWW...........2.5V ................ SPX2815AT-3-3 ....................... 1% ......... SPX2815AT33YYWW...........3.3V ................ SPX2815AT-3-3/TR ................. 1% ......... SPX2815AT33YYWW...........3.3V ................ SPX2815AT-5-0 ....................... 1% ......... SPX2815AT50YYWW...........5.0V ................ SPX2815AT-5-0/TR ................. 1% ......... SPX2815AT50YYWW...........5.0V ................ SPX2815AU ............................. 1% .......... SPX2815AUYYWW..............Adj .................. SPX2815AU-2-5 ...................... 1% ......... SPX2815AU25YYWW...........2.5V ................ SPX2815AU-3-3 ...................... 1% ......... SPX2815AU33YYWW...........3.3V ................ SPX2815AU-5-0 ...................... 1% ......... SPX2815AU50YYWW...........5.0V ................ PACKAGE 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-220 3 lead TO-220 3 lead TO-220 3 lead TO-220 Available in lead free packaging. To order add “-L” suffix to part number. Example: SPX2815AU-5-0 = standard; SPX2815AU-L -5-0/TR = lead free. Pack quantity is 500 for TO-263 and 2,000 for TO-252. /TR = Tape and Reel Sipex Corporation Solved By Sipex TM 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: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator 9 © 2006 Sipex Corporation ORDERING INFORMATION SPX2815R ............................... 2% ............ SPX2815RYYWW..............Adj ................... SPX2815R/TR ......................... 2% ............ SPX2815RYYWW..............Adj ................... SPX2815R-2-5 ......................... 2% .......... SPX2815R25YYWW...........2.5V ................. SPX2815R-2-5/TR ................... 2% .......... SPX2815R25YYWW...........2.5V ................. SPX2815R-3-3 ......................... 2% .......... SPX2815R33YYWW...........3.3V ................. SPX2815R-3-3/TR ................... 2% .......... SPX2815R33YYWW...........3.3V ................. SPX2815R-5-0 ......................... 2% .......... SPX2815R50YYWW...........5.0V ................. SPX2815R-5-0/TR ................... 2% .......... SPX2815R50YYWW...........5.0V ................. SPX2815T ................................ 2% ............ SPX2815TYYWW..............Adj ................... SPX2815T/TR .......................... 2% ............ SPX2815TYYWW..............Adj ................... SPX2815T-2-5 ......................... 2% .......... SPX2815T25YYWW...........2.5V ................. SPX2815T-2-5/TR ................... 2% .......... SPX2815T25YYWW...........2.5V ................. SPX2815T-3-3 ......................... 2% .......... SPX2815T33YYWW...........3.3V ................. SPX2815T-3-3/TR ................... 2% .......... SPX2815T33YYWW...........3.3V ................. SPX2815T-5-0 ......................... 2% .......... SPX2815T50YYWW...........5.0V ................. SPX2815T-5-0/TR ................... 2% .......... SPX2815T50YYWW...........5.0V ................. SPX2815U ............................... 2% ............ SPX2815UYYWW..............Adj ................... SPX2815U-2-5 ......................... 2% .......... SPX2815U25YYWW...........2.5V ................. SPX2815U-3-3 ......................... 2% .......... SPX2815U33YYWW...........3.3V ................. SPX2815U-5-0 ......................... 2% .......... SPX2815U50YYWW...........5.0V ................. 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-252 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-263 3 lead TO-220 3 lead TO-220 3 lead TO-220 3 lead TO-220 Available in lead free packaging. To order add “-L” suffix to part number. Example: SPX2815U-5-0 = standard; SPX2815U-L -5-0/TR = lead free. Pack quantity is 500 for TO-263 and 2,000 for TO-252. /TR = Tape and Reel 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: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator 10 © 2006 Sipex Corporation