LT3066 Series 45V V , 500mA Low Noise, IN Linear Regulator with Programmable Current Limit and Active Output Discharge FEATURES DESCRIPTION n Input Voltage Range: 1.6V to 45V The LT 3066 series are micropower, low noise, low dropout n Output Current: 500mA voltage (LDO) linear regulators that operate over a 1.6V n Active Output Discharge to 45V input voltage range. The devices supply 500mA of n Dropout Voltage: 300mV output current with a typical dropout voltage of 300mV. A n Programmable Precision Current Limit: 10% single external capacitor provides programmable low noise n Power Good Flag reference performance and output soft-start functionality. n Input Filtering for High PSRR A single external resistor programs the LT3066s current n Low Noise: 25V (10Hz to 100kHz) RMS limit, accurate to 10% over a wide input voltage and tem- n Adjustable Output (V = V = 600mV) REF OUT(MIN) perature range. A PWRGD flag indicates output regulation. n Output Tolerance: 2% Over Line, Load and Temperature n The LT3066 features an NMOS pull-down that discharges Stable with Low ESR, Ceramic Output Capacitors the output if SHDN or IN is driven low. (3.3F Minimum) n Single Capacitor Soft-Starts Reference and Lowers The LT3066 optimizes stability and transient response Output Noise with low ESR ceramic capacitors, requiring a minimum of n Current Limit Foldback Protection 3.3F. Internal protection circuitry includes current limiting n Shutdown Current: <3A with foldback, thermal limiting, reverse battery protection, n Reverse Battery and Thermal Limit Protection reverse current protection and reverse output protection. n 12-Lead 4mm 3mm DFN and 12-lead MSOP Packages The LT3066 is available in fixed output voltages of 3.3V and 5V, and as an adjustable device with an output volt- APPLICATIONS age range from 0.6V to 19V. The device is offered in the n Battery-Powered Systems thermally-enhanced 12-lead 4mm 3mm DFN and MSOP n Automotive Power Supplies packages. n Industrial Power Supplies All registered trademarks and trademarks are the property of their respective owners. Protected n by U.S. Patents, including 8159278. Avionic Power Supplies n Portable Instruments TYPICAL APPLICATION Output Discharge vs V OUT C = 1nF 3.3V Supply with 497mA Precision Current Limit REF/BYP IN OUT IN OUT 5.0V 5V 3.3V 10F 10F SHDN SENSE 500mA 3.3V 500k INFILT 1V/DIV 0.47F 2.0V LT3066-3.3 1.2V PWRGD SHDN: 0 TO 2V I REF/BYP MAX GND 3066 TA01b 604 1ms/DIV 22nF 1nF 3066 TA01a V = V +1V IN OUT C = 10F OUT I = 10A FB-DIVIDER Rev. B 1 Document Feedback For more information www.analog.comLT3066 Series ABSOLUTE MAXIMUM RATINGS (Note 1) IN Pin Voltage .........................................................50V SENSE Pin Voltage ..................................................50V OUT Pin Voltage .............................................. +20V, 1V Output Short-Circuit Duration .......................... Indefinite Input-to-Output Differential Voltage (Note 2) ............ 50V Operating Junction Temperature Range (Notes 3, 5, 14) ADJ Pin Voltage ......................................................50V E-, I-Grades ....................................... 40C to 125C SHDN Pin Voltage ...................................................50V Storage Temperature Range .................. 65C to 150C PWRGD Pin Voltage .......................................0.3V, 50V Lead Temperature (Soldering, 10 sec) INFILT Pin Voltage (Note 15) ...................................50V MSOP Package Only .........................................300C PIN CONFIGURATION TOP VIEW TOP VIEW INFILT 1 12 OUT INFILT 1 12 OUT IN 2 11 OUT IN 2 11 OUT IN 3 10 NC/SENSE* 13 IN 3 10 NC/SENSE* 13 GND SHDN 4 GND 9 ADJ SHDN 4 9 ADJ PWRGD 5 8 GND PWRGD 5 8 GND I 6 7 REF/BYP MAX I 6 7 REF/BYP MAX MSE PACKAGE 12-LEAD PLASTIC MSOP DE PACKAGE T = 150C, = 34C/W, = 6C/W JMAX JA JC 12-LEAD (4mm 3mm) PLASTIC DFN EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB T = 150C, = 34C/W, = 5C/W JMAX JA JC EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB *Pin 10: NC for LT3066, SENSE for LT3066-3.3, LT3066-5 ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3066EDE PBF LT3066EDE TRPBF 3066 12-Lead (4mm x 3mm) Plastic DFN 40C to 125C LT3066IDE PBF LT3066IDE TRPBF 3066 12-Lead (4mm x 3mm) Plastic DFN 40C to 125C LT3066EDE-3.3 PBF LT3066EDE-3.3 TRPBF 06633 12-Lead (4mm x 3mm) Plastic DFN 40C to 125C LT3066IDE-3.3 PBF LT3066IDE-3.3 TRPBF 06633 12-Lead (4mm x 3mm) Plastic DFN 40C to 125C LT3066EDE-5 PBF LT3066EDE-5 TRPBF 30665 12-Lead (4mm x 3mm) Plastic DFN 40C to 125C LT3066IDE-5 PBF LT3066IDE-5 TRPBF 30665 12-Lead (4mm x 3mm) Plastic DFN 40C to 125C LT3066EMSE PBF LT3066EMSE TRPBF 3066 12-Lead Plastic MSOP 40C to 125C LT3066IMSE PBF LT3066IMSE TRPBF 3066 12-Lead Plastic MSOP 40C to 125C LT3066EMSE-3.3 PBF LT3066EMSE-3.3 TRPBF 306633 12-Lead Plastic MSOP 40C to 125C LT3066IMSE-3.3 PBF LT3066IMSE-3.3 TRPBF 306633 12-Lead Plastic MSOP 40C to 125C LT3066EMSE-5 PBF LT3066EMSE-5 TRPBF 30665 12-Lead Plastic MSOP 40C to 125C LT3066IMSE-5 PBF LT3066IMSE-5 TRPBF 30665 12-Lead Plastic MSOP 40C to 125C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. Rev. B 2 For more information www.analog.com