SPX2815 1.5A Low Dropout Voltage Regulator APPLICATIONS FEATURES Desktop PCs, Servers Guaranteed 1.5A Output Current Powering VGA and Sound Cards Three Terminal Adjustable or Fixed 2.5V, 3.3V and 5.0V Cordless Phones Low Quiescent Current Battery Chargers Low Dropout Voltage of 1.1V 1.5A Adjustable Power Supplies 0.1% Line and 0.1% Load Regulation Portable Instrumentation Stable with 10uF Ceramic Capacitor SMPS Post-Regulator Overcurrent and Thermal Protection Constant Current Regulators Available Packages: TO-252, Disk Drives TO-220, and TO-263 Refer to Page 5 for Pinouts Similar to Industry Standard LT1086/ Now Available in Lead Free Packaging LT1586 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 10F ceramic or tantalum provides unconditional stability. FUNCTIONAL DIAGRAM (Adjustable) V IN + Current Limit - V OUT I CL AMP + 1.25V V REF + Thermal Limit ADJ/GND ~ I 50A ADJ 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 Operating Junction Temperature Range.....-40C to +125C Lead Temperature (soldering, 5 seconds) ...............260C Input Supply Voltage .................................................... +10V Storage Temperature Range.......................-65C to +150C Input to Output Voltage ................................................ +8.8V ESD Rating .............................................................. 2kV min ELECTRICAL CHARACTERISTICS at V =V + 1.5V, T = 25C, C = C = 10 F, I =10mA, unless otherwise specified. The Boldface applies over the IN OUT A IN OUT OUT full operating temperature range. PARAMETER MIN TYP MAX MIN TYP MAX UNITS CONDITIONS 2.5V Version SPX2815A SPX2815 Output Voltage 2.475 2.500 2.525 2.450 2.500 2.550 V I = 10mA, V =4.5V OUT IN 2.450 2.550 2.425 2.575 10mA I 1.5A, 4.25V V 10V OUT IN 3.30V Version Output Voltage 3.267 3.300 3.333 3.234 3.300 3.366 V I = 10mA, V =5V OUT IN 3.234 3.366 3.201 3.399 10mA I 1.5A, 4.75V V 10V OUT IN 5.0V Version Output Voltage 4.950 5.000 5.050 4.900 5.000 5.100 V I =10mA, V =7V OUT IN 4.900 5.100 4.850 5.150 10mA I 1.5A, 6.50V V 10V OUT IN All Voltage Options Reference Voltage 1.238 1.250 1.262 1.225 1.250 1.275 V I =10mA, (V - V )= 2V OUT IN OUT 1.225 1.275 1.212 1.287 10mAI 1.5A, 1.5V(V -V ) 10V OUT IN OUT Output Voltage 0.3 0.5 % Temperature Stability Line Regulation 0.1 0.2 0.1 0.2 % 4.25VV 10V,V =2.5V,I =10mA IN OUT OUT 0.1 0.2 0.1 0.2 4.75VV 10V,V =3.3V,I =10mA IN OUT OUT 0.1 0.2 0.1 0.2 6.50VV 10V,V =5.0V,I =10mA IN OUT OUT Load Regulation 0.1 0.3 0.1 0.3 % 10mAI 1.5A, V =2.5V OUT OUT 0.1 0.3 0.1 0.3 10mAI 1.5A, V =3.3V OUT OUT 0.1 0.3 0.1 0.3 10mAI 1.5A, V =5.0V OUT OUT Dropout Voltage 1.00 1.00 V I =0.5A OUT (Note 2) 1.10 1.2 1.10 1.2 I =1.5A OUT Quiescent Current 4 10 4 10 mA Fixed voltage versions Adjust Pin Current 50 120 50 120 A Current Limit 2.5 2.5 A (V -V )=5V IN OUT Thermal Regulation 0.01 0.1 0.01 0.1 %/W 25C, 30mS pulse Ripple Rejection 60 75 60 75 dB f =120Hz, (V -V )=2V, RIPPLE IN OUT V =1V RIPPLE PP Long Term Stability 0.03 0.03 % 125C, 1000Hrs RMS Output Noise 0.003 0.003 % % of V , 10Hzf10kHz OUT Thermal Resistance 3 3 C/W TO-220 Junction to Case, at Tab 29.3 29.3 TO-220 Junction to Ambient 3 3 TO-263 Junction to Case, at Tab 31.4 31.4 TO-263 Junction to Ambient 6 6 TO-252 Junction to Case, at Tab 50 50 TO-252 Junction to Ambient Date: 6/21/06 Rev C SPX2815 1.5A Low Dropout Voltage Regulator 2006 Sipex Corporation 2