SPX29501/02 P 5A Low Dropout Voltage Regulator 5A Low Dropout Voltage Regulator November 2008 Rev. B 5 A FEATURES Adjustable Output Down to 1.25V 1% Output Accuracy Output Current of 5A Low Dropout Voltage: 420mV 5A Tight Line Regulation: 0.06% SPX29502 SP29500 Load Regulation: 0.2% 5 Pin TO-263 Fast Transient Response 3 Pin TO-220 1 2 3 Reverse-Battery Protection 1 2 3 Current Limit and Thermal Protection APPLICATIONS Powering VGA & Sound Card Power PC Supplies SMPS Post Regulator High Efficiency Green Computer V V GND Systems IN OUT High Efficiency Linear Power Supplies Constant Current Regulators Now Available in Lead Free Packaging Adjustable Power Supplies Battery Charger DESCRIPTION The SPX29501/02 are 5A highly accurate voltage regulators with a low dropout voltage of 420mV 5A. These regulators are specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. They are fully fault protected against over-current, reverse battery, and positive and negative voltage transients. On-Chip trimming adjusts the reference voltage to 1% initial accuracy. Other features include Enable, and Error Flag. The SPX295001/02 are offered in 5-pin TO-220 & TO-263 packages. For a 1.5A version, refer to the SPX29150 data sheet. For a 3A version, refer to the SPX29300 datasheet. TYPICAL APPLICATION CIRCUITS SPX29502 1 4 V V 1 SPX29500 3 V V OUT IN IN OUT 2 + + 5 3 22F + 2 + R1 6.8F 22F 6.8F ADJ GND R2 Figure 1. Fixed Output Linear Regulator Figure 2. Adjustable Output Linear Regulator Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 Fax. +1 510 668-7001 EN INPUT GND OUTPUT ADJUSTABSOLUTE MAXIMUM RATINGS OPERATING RATINGS Lead Temperature (soldering, 5 seconds) ................260C Input Voltage ................................................................... 16V Storage Temperature Range........................-65C to +150C Operating Junction Temperature Range......-40C to +125C Input Voltage (Note 1) .................................................... 20V ELECTRICAL CHARACTERISTICS Specifications are at V = V + 1V and I = 10mA, C = 6.8F, C = 22F, T = 25C, unless otherwise specified. IN OUT OUT IN OUT A The denotes the specifications which apply over the full operating temperature range, unless otherwise specified. PARAMETER MIN TYP MAX UNITS CONDITIONS Fixed Voltage Options SPX29501 1.8V Version Output Voltage 1.782 1.800 1.818 V I = 10mA OUT 1.764 1.800 1.836 10mA I 5A, 2.8V V 16V OUT IN 2.5V Version Output Voltage 2.475 2.500 2.525 V I = 10mA OUT 2.450 2.500 2.550 10mA I 5A, 3.5V V 16V OUT IN 3.3V Version Output Voltage 3.267 3.300 3.333 V I = 10mA OUT 3.234 3.300 3.366 10mA I 5A, 4.3V V 16V OUT IN 5.0V Version Output Voltage 4.950 5.000 5.050 V I = 10mA OUT 4.900 5.000 5.100 10mA I 5A, 6.0V V 16V OUT IN All Voltage Options SPX29501/02 Line Regulation 0.06 0.5 % I =10mA,(V +1V) V 16V OUT OUT IN Load Regulation 0.2 1 % V =V +2V, 10mA I I (Note 2) IN OUT OUT FL V/ T20 100 ppm/C V Temp Coefficient (Note 5) OUT Dropout Voltage, except 90 250 mV I =250mA OUT 1.8V 250 I =2.5A eg OUT 420 800 I =5A OUT Ground Current 20 50 mA I =2.5A OUT (Note 4) 70 I =5A OUT Ground Pin Current 3 mA V =0.5V less than specified V IN OUT, at Dropout I =10mA OUT Current Limit 7.5 10 A (Note 3) Output Noise Voltage 425 V C =22F RMS L (10Hz to 100kHz) I =100mA 350 C =33F L L Reference Voltage 1.228 1.240 1.252 V Adjustable version only 1.215 1.265 Reference Voltage 1.203 1.277 V Adjustable version only (Note 7) Adjust Pin Bias Current 40 80 nA 120 Reference Voltage 20 ppm/C (Note 6) Temp. Coeff. Adjust Pin Bias 0.1 nA/C Current Temp. Coeff. Rev:B Nov 2008 SPX29500/01/02/03 5A Low Dropout Voltage Regulator Copyright 2008 Exar Corporation 2