LT3080-1 Parallelable 1.1A Adjustable Single Resistor Low Dropout Regulator Fea T Descrip T n Internal Ballast Resistor Permits Direct The LT 3080-1 is a 1.1A low dropout linear regulator that Connection to Power Plane for Higher Current incorporates an internal ballast resistor to allow direct and Heat Spreading paralleling of devices without the need for PC board trace n Output Current: 1.1A resistors. The internal ballast resistor allows multiple de- n Single Resistor Programs Output Voltage vices to be paralleled directly on a surface mount board n 1% Initial Accuracy of SET Pin Current for higher output current and power dissipation while n Output Adjustable to 0V keeping board layout simple and easy. The device brings n Low Output Noise: 40V (10Hz to 100kHz) out the collector of the pass transistor to allow low dropout RMS n Wide Input Voltage Range: 1.2V to 36V operationdown to 350mVwhen used with multiple n Low Dropout Voltage: 350mV input supplies. n <0.001%/ V Line Regulation The LT3080-1 is capable of supplying a wide output volt- n Minimum Load Current: 0.5mA age range. A reference current through a single resistor n Stable with 2.2F Minimum Ceramic Output Capacitor programs the output voltage to any level between zero n Current Limit with Foldback and Overtemperature and 36V. The LT3080-1 is stable with 2.2F of ceramic Protected capacitance on the output, not requiring additional ESR n Available in 8-Lead MSOP and 3mm 3mm DFN as is common with other regulators. Internal protection includes current limiting and thermal a T limiting. The LT3080-1 regulator is offered in the 8-lead n MSOP (with an Exposed Pad for better thermal charac- High Current All Surface Mount Supply n teristics) and 3mm 3mm DFN packages. High Efficiency Linear Regulator n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and VLDO Post Regulator for Switching Supplies and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the n Low Parts Count Variable Voltage Supply property of their respective owners. n Low Output Voltage Power Supplies Typical a T Paralleling Regulators Offset Voltage Distribution IN LT3080-1 N = 13250 V CONTROL + 25m OUT* SET IN LT3080-1 V IN 4.8V TO 28V V CONTROL + 1F 25m V OUT OUT* 3.3V 2 1 0 1 2 2.2A V DISTRIBUTION (mV) SET OS 30801 TA01b 10F *OUTPUTS CAN BE 165k DIRECTLY MOUNTED TO POWER PLANE 30801 TA01 30801fc 1 For more information www.linear.com/LT3080-1 ion pplica ions pplica ion uresLT3080-1 a Te m aximum r a T (Note 1) All Voltages Relative to V OUT V Pin Voltage ....................................40V, 0.3V Operating Junction Temperature Range (Notes 2, 10) CONTROL IN Pin Voltage ................................................40V, 0.3V E-, I-grades ........................................40C to 125C SET Pin Current (Note 7) ..................................... 10mA Storage Temperature Range ..................65C to 150C SET Pin Voltage (Relative to OUT) .........................0.3V Lead Temperature (Soldering, 10 sec) Output Short-Circuit Duration .......................... Indefinite MS8E Package Only ..........................................300C p in c F T TOP VIEW TOP VIEW OUT 1 8 IN OUT 1 8 IN OUT 2 7 IN 9 OUT 2 7 IN 9 OUT OUT 3 6 NC OUT 3 OUT 6 NC 5 V SET 4 CONTROL SET V 4 5 CONTROL MS8E PACKAGE 8-LEAD PLASTIC MSOP DD PACKAGE T = 125C, = 60C/W, = 10C/W JMAX JA JC 8-LEAD (3mm 3mm) PLASTIC DFN EXPOSED PAD (PIN 9) IS OUT, MUST BE SOLDERED TO PCB T = 125C, = 64C/W, = 3C/W JMAX JA JC EXPOSED PAD (PIN 9) IS OUT, MUST BE SOLDERED TO PCB o r Der i n F T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3080EDD-1 PBF LT3080EDD-1 TRPBF LDPM 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT3080IDD-1 PBF LT3080IDD-1 TRPBF LDPM 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT3080EMS8E-1 PBF LT3080EMS8E-1 TRPBF LTDPN 8-Lead Plastic MSOP 40C to 125C LT3080IMS8E-1 PBF LT3080IMS8E-1 TRPBF LTDPN 8-Lead Plastic MSOP 40C to 125C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3080EDD-1 LT3080EDD-1 TR LDPM 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT3080IDD-1 LT3080IDD-1 TR LDPM 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT3080EMS8E-1 LT3080EMS8E-1 TR LTDPN 8-Lead Plastic MSOP 40C to 125C LT3080IMS8E-1 LT3080IMS8E-1 TR LTDPN 8-Lead Plastic MSOP 40C to 125C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: