SPX29150/51/52/53 1.5A Low Dropout Voltage Regulator FEATURES APPLICATIONS Adjustable Output Down to 1.25V Powering VGA and Sound Cards 1% Output Accuracy LCD Monitors Output Current of 1.5A USB Power Supplies Low Dropout Voltage of 390mV 1.5A PowerPC Supplies Extremely Tight Load and Line SMPS Post Regulators Regulation High-efficiency Green Computer Extremely Fast Transient Response Systems Reverse-Battery Protection High-efficiency Linear Power Supplies Zero Current Shutdown (5 pin version) Portable Instrumentation Error Flag Signal Output for Out of Constant Current Regulators Regulation State (5 pin version) Adjustable Power Supplies Standard TO-220 and TO-263 Battery Chargers Packages DESCRIPTION The SPX29150/51/52/53 are 1.5A, highly accurate voltage regulators with a low dropout voltage of 390mV (typical) 1.5A. These regulators are specifically designed for low volt - age 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 in the 5 pin versions include Enable and Error Flag. The SPX29150/51/52/53 is offered in 3-pin and 5-pin TO-220 & TO-263 packages. For a 3A version, refer to the SPX29300 data sheet. TYPICAL APPLICATION CIRCUITS SPX29152 1 3 1 4 V SPX29150 OUT V V V OUT IN IN 2 + + + 2 + 5 3 10 F 10 F R1 6.8 F 6.8 F ADJ GND R2 Figure 1. Fixed Output Linear Regulator Figure 2. Adjustable Output Linear Regulator REV B 06/05/08 SP29150/51/52/53 1.5A Low Dropout Voltage Regulator Copyright 2008 Exar Corporation 1 FOR SIPEX APPROVALABSOLUTE MAXIMUM RATINGS Storage Temperature Range........................-65C to +150C Operating Junction Temperature Range......-40C to +125C Input Voltage (Note 7)......................................................16V ELECTRICAL CHARACTERISTICS at VIN=VOUT + 1V and IOUT = 10mA, CIN = 6.8F, COUT = 10F, TA = 25C, unless otherwise specified. The Boldface applies over the junction temperature range. Adjustable versions are set to 5.0V. SPX29150/51 PARAMETER CONDITIONS Typ Units Min Max 1.8V Version IOUT = 10mA 1.8 1.782 1.818 Output Voltage V 10mA IOUT 1.5A, 2.5V VIN 16V 1.8 1.764 1.836 2.5V Version IOUT = 10mA 2.5 2.475 2.525 Output Voltage V 10mA IIIOUT1.5A, 3.5V1.5A, 3.5VVVVVIN 116V6V 2.5 2.450 2.550 3.3V Version IOUT = 10mA 3.3 3.267 3.333 Output Voltage V 10mA IIIOUT1.5A, 4.3V1.5A, 4.3VVVVVIN 116V6V 3.3 3.234 3.366 5.0V Version IOUT = 10mA 5.0 4.950 5.050 Output Voltage V 10mA IIIOUT1.5A, 6.0V1.5A, 6.0VVVVVIN 116V6V 5.0 4.900 5.100 All Voltage Options SPX29150/51/52/53 Line Regulation IO = 10mA, (VOUT + 1V) VVVIN 116V6V 0.1 0.5 % VIN = VOUT + 1V, 10mA IOUT IFULL- Load Regulation 0.2 1 % LOAD V 13 100 ppm/C Output Voltage T Temperature Coefficient IO = 100mA 70 200 Dropout Voltage (Note 1) IO = 750mA 230 mV (except 1.8V version) IO = 1.5A 390 600 IO = 750mA, VIN = VOUT, +1V 12 Ground Current (Note 3) 25 mA IO = 1.5A 45 IGNDDO Ground Pin Cur- VIN = 0.1V less than specified V OUT 0.9 mA rent at Dropout IOUT = 10mA Current Limit VOUT = 0.0V (Note 2) 2.2 1.7 A Output Noise Voltage CL = 10F 400 (10Hz to 100kHz) VRMS IL = 100mA CL = 33F 260 Adjustable version only 1.228 1.252 V Reference Voltage 1.240 1.215 1.265 Reference Voltage Adjustable version only (Note 8) 1.203 1.277 Adjust Pin 80 40 nA Bias Current 120 Reference Voltage Tem- perature (Note 4) 13 ppm/C Coefficient Adjust Pin Bias Current Temperature 0.1 nA/C Coefficient Flag Output (Error Comparator) SPX29151/53 1.00 Output Leakage Current VOH=16V 0.1 UA 2.00 Device set for 5V, VIN=4.5V, 300 Output Low Voltage 200 mV IOL=250A 400 Rev B 06/05/08 SP29150/51/52/53 1.5A Low Dropout Voltage Regulator Copyright 2008 Exar Corporation 2