SPX1587AU-1-8

Solved by SPX1587 TM 3A Low Dropout Voltage Regulator FEATURES ■ Guaranteed 3A Output Current ■ Three Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 3.3V and 5.0V ■ Low Quiescent Current ■ Low Dropout Voltage: 1.1V at 3A ■ Line Regulation: 0.1% ■ Load Regulation: 0.1% ■ Stable with 10uF Ceramic Capacitor ■ Overcurrent and Thermal Protection ■ Similar to Industry Standard LT1085/ LT1585 ■ Available in RoHS Compliant, Lead Free Packages: TO-252, TO-220, and TO-263 SPX1587 3 Pin TO-263 SPX1587 3 Pin TO-220 1 2 3 1 2 3 ADJ/GND VOUT VIN ADJ/GND VOUT VIN APPLICATIONS ■ ■ ■ ■ ■ ■ ■ Desktop PC's Servers Powering VGA and Sound Cards Cordless Phones Battery Chargers Adjustable Power Supplies Portable Instrumentation SMPS Post-Regulator The SPX1587 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 SPX1587 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. SPX1587 is available in adjustable or fixed 1.5V, 1.8V, 2.5V, 3.3V and 5.0V output voltages. The SPX1587 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. DESCRIPTION FUNCTIONAL DIAGRAM (Adjustable) VIN Current Limit + VOUT ICL _ AMP + 1.25V Thermal Limit + – VREF ADJ/GND IADJ ~ 50µA – © 2007 Sipex Corporation Jun8-07 Rev D I TL SPX587 Low-Dropout Voltage Regulator  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 ABSOLUTE MAXIMUM RATINGS Specifications are at VIN=VOUT + 1.5V, TA = 25°C, CIN = COUT = 10µF, IOUT =10mA, unless otherwise specified. The the specifications which apply full operating temperature range -40°C to +85°C, unless otherwise specified. PARAMETER 1.5V Version Output Voltage 1.8V Version Output Voltage 2.5V Version Output Voltage 3.3V Version Output Voltage 5.0V Version Output Voltage All Voltage Options Reference Voltage Output Voltage Temperature Stability Line Regulation 1.238 1.225 1.250 0.3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.00 1.05 1.10 4 4 50 3.2 60 5 0.01 75 0.03 0.003 3 29.4 3 31.4 6 50 0.1 60 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3 0.3 1.2 10 10 120 3.2 1.262 1.275 1.225 1.212 1.250 0.5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.00 1.05 1.10 4 4 50 5 0.01 75 0.03 0.003 3 29.4 3 31.4 6 50 0.1 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3 0.3 1.2 10 10 120 mA mA µA A %/W dB % % °C/W (VIN-VOUT)=2V 25°C, 30mS pulse Fixed voltage versions 1.275 1.287 V % % 3.0V VIN 10V,VOUT=1.5V 3.3V VIN 10V,VOUT=1.8V 4.25V VIN 10V,VOUT=2.5V 4.75V VIN 10V,VOUT=3.3V 6.50V VIN 10V,VOUT=5.0V 10mA 10mA 10mA 10mA 10mA IOUT IOUT IOUT IOUT IOUT 3A, VOUT=1.5V 3A, VOUT=1.8V 3A, VOUT=2.5V 3A, VOUT=3.3V 3A, VOUT=5.0V 4.950 4.900 5.000 5.050 5.100 4.900 4.850 5.000 5.100 5.150 V 3.267 3.234 3.300 3.333 3.366 3.234 3.201 3.300 3.366 3.399 V 2.475 2.450 2.500 2.525 2.550 2.450 2.425 2.500 2.550 2.575 V 1.782 1.764 1.800 1.818 1.836 1.764 1.746 1.800 1.836 1.854 V 1.485 1.470 MIN TYP SPX1587A 1.500 1.515 1.530 1.470 1.455 MAX MIN TYP SPX1587 1.500 1.530 1.545 V MAX UNITS CONDITIONS ELECTRICAL CHARACTERISTICS denotes IOUT = 10mA, VIN =3.5V 10mA I OUT 3A, 3.0V V IN 10V IOUT = 10mA, VIN =3.8V 10mA I OUT 3A, 3.3V V IN 10V IOUT = 10mA, VIN =4.5V 10mA I OUT 3A, 4.25V V IN 10V IOUT = 10mA, VIN =5V 10mA I OUT 3A, 4.75V V IN 10V IOUT=10mA, VIN=7V 10mA I OUT 3A, 6.50V V IN 10V IOUT=10mA, (VIN - VOUT )= 2V 10mA IOUT 3A, 1.5V (VIN-VOUT) 10V Load Regulation % Dropout Voltage (Note 2) Minimum Load Current (Note 4) Quiescent Current Adjust Pin Current Current Limit Thermal Regulation Ripple Rejection Long Term Stability RMS Output Noise Thermal Resistance V IOUT=1A IOUT=2A IOUT=3A 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 Jun8-07 Rev D SPX587 Low-Dropout Voltage Regulator © 2007 Sipex Corporation 2 ELECTRICAL CHARACTERISTICS: Continued (Notes) NOTES: Note 1: Output temperature coefficient is defined as the worst case voltage change divided by the total temperature range Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential at very low values of programmed output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account. Note 3: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied. excluding load or line regulation effect. Note 4: Adjustable Version Only. TYPICAL PERFORMANCE CHARACTERISTICS 3.325 1.275 1.27 1.25v Adj 3.320 1.265 1.26 Vout (V) Vout (V) 3.315 1.255 1.25 1.245 1.24 3.310 3.305 1.235 1.23 3.300 4.5 6.5 8.5 10.5 Vin (V) 12.5 14.5 1.225 -50 -30 -10 10 30 Temp (C) 50 70 90 110 130 Figure 1. Line Regulation for SPX1587U-3.3; IOUT=10mA Figure 2. VOUTvs Temperature, V IN=2.5V, IOUT=10mA 2.55 2.54 2.53 Vout (V) 3.38 2.5v Adj 2.5v Fixed 3.36 3.34 3.32 3.3 3.28 3.26 -50 3.3v Adj 3.3v Fixed 2.52 Vout (V) 2.51 2.5 2.49 2.48 2.47 2.46 2.45 -50 -30 -10 10 30 50 70 90 110 130 -30 -10 10 30 50 70 90 110 130 Temp (°C) Temp (C) Figure 3. VIN=4.0V, IOUT=10mA Jun8-07 Rev D Figure 4. VIN=5.0V, IOUT=10mA SPX587 Low-Dropout Voltage Regulator © 2007 Sipex Corporation  APPLICATION INFORMATION Output Capacitor To ensure the stability of the SPX1587, 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 ESR can vary based on the type of capacitor used in the applications to guarantee stability. The recommended value for ESR is 0.5 or less. A larger value of output capacitance (up to 100µF) can improve the load transient response. Soldering Methods The SPX1587 die is attached to the heatsink lead which exits opposite the input, output, and ground pins. Thermal Characteristics The SPX1587 features the internal thermal limiting to protect the device during overload conditions. 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