LT3082 200mA Single Resistor Low Dropout Linear Regulator FEATURES DESCRIPTION n Outputs May Be Paralleled for Higher Output The LT 3082 is a 200mA low dropout linear regulator that Current or Heat Spreading can be paralleled to increase output current or spread heat n Maximum Output Current: 200mA in surface mounted boards. Architected as a precision n Wide Input Voltage Range: 1.2V to 40V current source and voltage follower, this regulator bene ts n Output Adjustable to 0V many applications requiring high current, adjustability to n Stable with Minimum 2.2F Ceramic Capacitors zero and no heat sink. The LT3082 withstands reverse n Single Resistor Sets Output Voltage input voltages and reverse output-to-input voltages without n Initial Set Pin Current Accuracy: 1% reverse-current ow. n Low Output Noise: 33V (10Hz to 100kHz) RMS A key feature of the LT3082 is the capability to supply a n Reverse-Battery Protection wide output voltage range. A precision 0 TC 10A ref- n Reverse-Current Protection erence current source drives a single resistor to program n <1mV Load Regulation Typical the output voltage to any level between zero and 38.5V. n <0.001%/V Line Regulation Typical The LT3082 is stable with only 2.2F of capacitance on n Current Limit and Thermal Shutdown Protection the output the IC uses small ceramic capacitors that n Available in 8-Lead SOT-23, 3-Lead SOT-223 and do not require additional ESR as is common with other 8-Lead 3mm 3mm DFN Packages regulators. APPLICATIONS Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and ther- n All-Surface Mount Power Supply mal limiting. The LT3082 is offered in the thermally en- n Post Regulator for Switching Supplies hanced 8-lead TSOT-23, 3-lead SOT-223 and 8-lead 3mm n Low Parts Count Variable Voltage Supply 3mm DFN packages. n Low Output Voltage Supply L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Battery Powered Regulator Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION SET Pin Current vs Temperature 10.100 Variable Output Voltage Battery Powered Supply 10.075 LT3082 IN 10.050 9V 1F 10A 10.025 + 10.000 9.975 SET OUT 9.950 V = 10A R OUT SET 9.925 R C C SET SET OUT 500k 2.2F 0.1F 9.900 50 25 0 25 50 75 100 125 150 TEMPERATURE (C) 3082 TA01a 3082 TA01b 3082f 1 SET PIN CURRENT (A)LT3082 ABSOLUTE MAXIMUM RATINGS (Note 1) All Voltages Relative to V OUT IN Pin Voltage Relative to SET, OUT ........................40V Operating Junction Temperature Range (Notes 2, 8) SET Pin Current (Note 6) .....................................15mA E, I Grades ......................................... 40C to 125C SET Pin Voltage (Relative to OUT, Note 6) ...............10V MP Grade ........................................... 55C to 125C Output Short-Circuit Duration .......................... Inde nite Storage Temperature Range ................... 65C to 150C Lead Temperature (ST, TS8 Packages Only) Soldering, 10 sec .............................................. 300C PIN CONFIGURATION TOP VIEW TOP VIEW 3 IN TOP VIEW OUT 1 8 IN NC 1 8 IN OUT 2 7 IN TAB IS OUT 2 OUT 9 OUT 2 7 IN NC 3 6 NC OUT 3 6 NC SET NC 4 5 1 SET OUT 4 5 SET ST PACKAGE TS8 PACKAGE DD PACKAGE 3-LEAD PLASTIC SOT-223 8-LEAD PLASTIC TSOT-23 8-LEAD (3mm s 3mm) PLASTIC DFN T = 125C, = 24C/W, = 15C/W T = 125C, = 57C/W, = 15C/W JMAX JA JC JMAX JA JC T = 125C, = 28C/W, = 3C/W JMAX JA JC TAB IS OUT, MUST BE SOLDERED TO OUT ON THE PCB EXPOSED PAD (PIN 9) IS OUT, MUST BE SOLDERED TO OUT ON SEE THE APPLICATIONS INFORMATION SECTION THE PCB SEE THE APPLICATIONS INFORMATION SECTION ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3082EDD PBF LT3082EDD TRPBF LDYT 40C to 125C 8-Lead (3mm 3mm) Plastic DFN LT3082IDD PBF LT3082IDD TRPBF LDYT 40C to 125C 8-Lead (3mm 3mm) Plastic DFN LT3082EST PBF LT3082EST TRPBF 3082 3-Lead Plastic SOT-223 40C to 125C LT3082IST PBF LT3082IST TRPBF 3082 3-Lead Plastic SOT-223 40C to 125C LT3082MPST PBF LT3082MPST TRPBF 3082MP 3-Lead Plastic SOT-223 55C to 125C LT3082ETS8 PBF LT3082ETS8 TRPBF LTDYV 8-Lead Plastic SOT-23 40C to 125C LT3082ITS8 PBF LT3082ITS8 TRPBF LTDYV 8-Lead Plastic SOT-23 40C to 125C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3082EDD LT3082EDD TR LDYT 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT3082IDD LT3082IDD TR LDYT 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT3082EST LT3082EST TR 3082 3-Lead Plastic SOT-223 40C to 125C LT3082IST LT3082IST TR 3082 3-Lead Plastic SOT-223 40C to 125C LT3082MPST LT3082MPST TR 3082MP 3-Lead Plastic SOT-223 55C to 125C LT3082ETS8 LT3082ETS8 TR LTDYV 8-Lead Plastic SOT-23 40C to 125C LT3082ITS8 LT3082ITS8 TR LTDYV 8-Lead Plastic SOT-23 40C to 125C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. *The temperature grade is identi ed by a label on the shipping container. 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