SPX1084AT-3.3

SPX1084 5A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response FEATURES • Adjustable Output Down To 1.2V • Fixed Output Voltages 1.5, 2.5, 3.3 & 5.0V • Output Current Of 5A • Low Dropout Voltage 1.1V Typ. • Extremely Tight Load And Line Regulation • Current & Thermal Limiting • Standard 3-Terminal Low Cost TO-220 & TO-263 • Similar To Industry Standard LT1085/LT1585 APPLICATIONS • Powering VGA & Sound Card • Power PC Supplies • SMPS Post-Regulator • High Efficiency “Green” Computer Systems • High Efficiency Linear Power Supplies • Portable Instrumentation • Constant Current Regulators • Adjustable Power Supplies • Battery charger PRODUCT DESCRIPTION The SPX1084 are low power 5A adjustable and fixed voltage regulators with 30V maximum VIN. They are very easy to use. It requires only 2 external resistors to set the output voltage for adjustable version. The SPX1084 are designed for low voltage applications that offers lower dropout voltage and faster transient response. This device is an excellent choice for use in powering low voltage microprocessor that require a lower dropout, faster transient response to regulate from +2.5V to 3.8V supplies and as a post regulator for switching supplies applications. The SPX1084 features low dropout of a maximum of 1.2 volts. The SPX1084 offers full protection against over-current faults, reversed input polarity, reversed load insertion, and positive and negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. The IQ of this device flows into load, which increases efficiency. The SPX1084 are offered in 3-pin TO-220 and TO-263 packages compatible with other 3 terminal regulators. For a similar 5A low dropout voltage regulator refer to the SPX1084 datasheet. Also for higher current requirements, refer to the SPX1084 datasheet. PIN CONNECTIONS TO-263-3 (T) TO-220-3 (U) SPX1084 1 2 3 SPX1084 1 2 3 ADJ/GND VOUT VIN ADJ/GND VOUT VIN Top View Front View Rev. 10/23/00 SPX1084 ABSOLUTE MAXIMUM RATINGS Lead Temp. (Soldering, 10 Seconds) .............................. 300°C Storage Temperature Range ............................ -65° to +150°C Operating Junction Temperature Range SPX1084 Control Section.......................... -45°C +125°C SPX1084 Power Transistor.........................-45°C +150°C Input Voltage........................................................ 30V Input to Output Voltage Differential .................... 30V ELECTRICAL CHARACTERISTICS (NOTE 1) at IOUT = 10mA, Ta=25°C, unless otherwise specified. PARAMETER 1.5V Version Output Voltage (Note 2) 2.5V Version Output Voltage (Note 2) 3.3V Version Output Voltage (Note 2) 5.0V Version Output Voltage (Note 2) Adjustable Version Reference Voltage (VREF) All Voltage Options Min. Load Current (Note 3) Line Regulation (∆VREF(Vin)) 1.5V≤ (VIN –VOUT)≤25V 2.75V≤VIN ≤25V, IOUT=10mA, TJ=25ºC (Note 3) VIN ≤25V, IOUT=0mA, TJ=25ºC (Note 2) 10mA≤IOUT ≤5A, (VIN-VOUT)=3V, TJ=25ºC (Note 3) 0≤IOUT ≤5A, VIN=7V, TJ=25ºC (Note 2) ∆VREF=1% VIN=7V 1.4V ≤ (VIN – VOUT) (Note3) TA=125ºC, 1000 Hrs. TA=25ºC, 20 ms pulse 10Hz to 10kHz TO-220 DD Package TA=25ºC Junction to Tab Junction to Ambient Junction to Tab Junction to Ambient IOUT = 5A (Note 3) IOUT < 5A (Note 2) 5 0.005 0.005 0.05 0.05 1.2 6 0.3 (Note 2) 0.01 0.25 0.003 3.0 60 3.0 60 5.2 1 0.020 10 0.2 0.2 0.7 0.3 1.5 5.2 1 0.020 10 0.2 0.2 0.7 0.3 1.5 A % %/W % % VO ºC/W % V % SPX1084-5.0V, 0 ≤ IOUT ≤ 5A, 6.5V≤VIN≤25V 5 4.950 4.900 1.250 1.250 1.238 1.225 5.050 5.100 1.262 1.270 4.9 4.65 1.225 1.212 5.1 5.15 1.270 1.288 V V SPX1084-3.3V, 0 < IOUT < 5A, 4.8V