SPX29302A

® SPX29302A Adjustable, Fast Response Time 3A High Current, Low Dropout Voltage Regulator FEATURES ■ Adjustable Output Down To 1.25V ■ 1% Output Accuracy ■ Output Current of 3A ■ Low Dropout Voltage of 370mV @ 3A ■ Extremely Fast Transient Response ■ Reverse-Battery Protection ■ Zero Current Shutdown (5 pin version) ■ Standard TO-220 and TO-263 Packages APPLICATIONS ■ Powering VGA & Sound Card ■ PowerPC™ Supplies ■ SMPS Post Regulator ■ High Efficiency “Green” Computer Systems ■ High Efficiency Linear Power Supplies ■ Constant Current Regulators ■ Adjustable Power Supplies ■ Battery Charger Refer to page 7 for pinouts. Now Available in Lead Free Packaging DESCRIPTION The SPX29302A is a 3A, highly accurate voltage regulator with a low drop out voltage of 370mV (typical) @ 3A. These regulators are specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. Fault protection features include over-current, reverse battery, and positive and negative voltage transients. On-Chip trimming adjusts the reference voltage to 1% initial accuracy. The SPX29302A is offered in 5-pin TO-220 & TO-263 packages. TYPICAL APPLICATION S CIRCUIT 1 SPX29302A 4 + 2 GND 3 5 ADJ + R1 V OUT 10µF V IN 6.8µF R2 Figure 1. Adjustable Output Linear Regulator Date: 5/25/04 SPX29302A 3Amp LDO Low Dropout Voltage Regulator © Copyright 2004 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS 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 Voltage (Note 7) .................................................... 16V ELECTRICAL CHARACTERISTICS (Note 1) at VIN=VOUT + 1V and IOUT = 10mA, CIN = 6.8µF, COUT = 10µF, Tj = 25°C, unless otherwise specified. The Boldface applies over the junction temperature range. SPX29302A PARAMETER CONDITIONS TYP MIN MAX UNITS Line Regulation Load Regulation ∆V/∆T Dropout Voltage, except 1.8V, (Note 3) Ground Current (Note 5) Ground Pin Current at Dropout Current Limit Output Noise Voltage (10Hz to 100kHz) IL=100mA Reference Voltage Reference Voltage Adjust Pin Bias Current Reference Voltage Temp. Coeff. Adjust Pin Bias Current Temp. Coeff. ENABLE Input ∆Input Logic Voltage Low (OFF) High (ON) ENABLE Input Pin IOUT=10mA,(VOUT+1V) ≤ VIN ≤ 16V VIN=VOUT+5V, 10mA≤ IOUT ≤ IFL (Note 2) VOUT Temp Coefficient (Note 6) IOUT=100mA IOUT=1.5A IOUT=3.0A IOUT=1.5A, VIN=VOUT+1V IOUT=3.0A VIN=0.5V less than specified VOUT, IOUT=10mA VOUT=0V (Note 4) CL=10µF CL=33µF 0.06 0.2 20 50 250 370 10 37 1.7 4.0 400 260 1.240 0.5 1 100 175 600 35 % % ppm/°C mV mA mA 5.0 A µVRMS VMAX V nA ppm/°C nA/°C (Note 8) 40 (Note 7) 20 0.1 1.228 1.215 1.203 1.252 1.265 1.277 80 120 VIN