SPX2815_06

SPX2815 1.5A Low Dropout Voltage Regulator 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 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 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 _ AMP + 1.25V Thermal Limit + – VREF ADJ/GND IADJ ~ 50μA – I TL Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator © 2006 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS Power Dissipation.......................................Internally Limited Lead Temperature (soldering, 5 seconds) ...............260°C Storage Temperature Range.......................-65°C to +150°C Operating Junction Temperature Range.....-40°C to +125°C Input Supply Voltage .................................................... +10V Input to Output Voltage ................................................ +8.8V ESD Rating .............................................................. 2kV min 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 2.5V Version Output Voltage 3.30V Version Output Voltage 5.0V Version Output Voltage All Voltage Options Reference Voltage Output Voltage Temperature Stability Line Regulation 1.238 1.250 1.225 0.3 0.1 0.1 0.1 0.1 0.1 0.1 1.00 1.10 4 50 2.5 0.01 60 75 0.03 0.003 3 29.3 3 31.4 6 50 0.1 60 0.2 0.2 0.2 0.3 0.3 0.3 1.2 10 120 2.5 0.01 75 0.03 0.003 3 29.3 3 31.4 6 50 0.1 1.262 1.225 1.250 1.275 1.212 0.5 0.1 0.1 0.1 0.1 0.1 0.1 1.00 1.10 4 50 0.2 0.2 0.2 0.3 0.3 0.3 1.2 10 120 mA μA A %/W dB % % °C/W (VIN-VOUT)=5V 25°C, 30mS pulse fRIPPLE=120Hz, (VIN-VOUT)=2V, VRIPPLE=1VPP 125°C, 1000Hrs % of VOUT, 10Hz≤f≤10kHz 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 1.275 1.287 V % % 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 10mA≤IOUT≤ 1.5A, VOUT=2.5V 10mA≤IOUT≤ 1.5A, VOUT=3.3V 10mA≤IOUT≤ 1.5A, VOUT=5.0V IOUT=0.5A IOUT=1.5A Fixed voltage versions IOUT=10mA, (VIN - VOUT )= 2V 10mA≤IOUT≤ 1.5A, 1.5V≤(VIN-VOUT)≤ 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 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 MIN TYP SPX2815A 2.475 2.500 2.450 MAX MIN TYP SPX2815 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 MAX UNITS CONDITIONS Load Regulation % Dropout Voltage (Note 2) Quiescent Current Adjust Pin Current Current Limit Thermal Regulation Ripple Rejection Long Term Stability RMS Output Noise Thermal Resistance V Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator © 2006 Sipex Corporation 2 TYPICAL PERFORMANCE CHARACTERISTICS 1.275 3.325 3.320 1.27 1.265 1.26 1.255 1.25 1.245 1.24 1.235 1.23 1.225 -50 1.25v Adj Vout (V) 3.315 3.310 3.305 3.300 4.5 6.5 8.5 10.5 Vin (V) 12.5 14.5 Vout (V) -30 -10 10 30 50 70 90 110 130 Temp (C) Figure 1. Line Regulation for SPX2815U-3.3; IOUT=10mA Figure 2. VOUT vs Temperature, VIN=2.5V, 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 3.38 2.5v Adj 2.5v Fixed 3.36 3.34 Vout (V) 3.3v Adj 3.3v Fixed Vout (V) 3.32 3.3 3.28 -30 -10 10 30 50 Temp (C) 70 90 110 130 3.26 -50 -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 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. Soldering Methods 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