LT3090 36V, 600mA Negative Linear Regulator with Programmable Current Limit Fea T Descrip T n Output Current: 600mA The LT 3090 is a 600mA, low dropout negative linear n Single Resistor Sets Output Voltage regulator that is easily parallelable to increase output n 50A SET Pin Current: 1% Initial Accuracy current or spread heat on surface mounted boards. n Designed with a precision current reference followed by a Programmable Current Limit n high performance rail-to-rail voltage buffer, this regulator Positive or Negative Output Current Monitor n finds use in applications requiring precision output, high Parallelable for Higher Current and Heat Spreading n current with no heat sink, output adjustability to zero and Low Dropout Voltage: 300mV n low dropout voltage. The device can also be configured Low Output Noise: 18V (10Hz to 100kHz) RMS n as a 3-terminal floating regulator. Configurable as 3-Terminal Floating Regulator n Wide Input Voltage Range: 1.5V to 36V The LT3090 features fast transient response, high PSRR n Rail-to-Rail Output Voltage Range: 0V to 32V and output noise as low as 18V . The LT3090 generates RMS n Positive/Negative Shutdown Logic or UVLO a wide output voltage range (0V to 32V) while maintain- n Programmable Cable Drop Compensation ing unity gain operation. This yields virtually constant n Load Regulation: 1.2mV (1mA to 600mA) bandwidth, load regulation, PSRR and noise, regardless n Stable with 4.7F Minimum Output Capacitor of the programmed output voltage. n Stable with Ceramic or Tantalum Capacitors The LT3090 supplies 600mA at a typical dropout voltage n Thermally Enhanced 12-Lead MSOP and 10-Lead of 300mV. Operating quiescent current is nominally 1mA 0.75mm 3mm 3mm DFN Packages and drops to << 1A in shutdown. A single resistor ad- justs the LT3090s precision programmable current limit. a T The LT3090s positive or negative current monitor either n Post Regulator for Switching Supplies sources a current (0.5mA/A) or sinks a current (1mA/A) n Low Noise Instrumentation and RF Supplies proportional to output current. Built-in protection includes n Rugged Industrial Supplies reverse output protection, internal current limit with fold- n Precision Power Supplies back and thermal shutdown with hysteresis. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Patent Pending. Typical a T TO ADC (IMON) 0.1F 49.9k 4.7F Output Noise: 10Hz to 100kHz 3.32k V OUT SET GND IMONP OUT 2.5V MAX I OUT 600mA V + OUT 100V/DIV 4.7F 3090 TA01b 1ms/DIV IMONN V IN V : 3.5V IN IN 3.3V 3V TO 10V V : 2V OUT SHDN ILIM C : 4.7F, C : 0.1F OUT SET 0.1F I : 600mA L 10k 3090 TA01a 3090fa 1 For more information www.linear.com/LT3090 LT3090 50A ion pplica ions pplica ion uresLT3090 a Te Maxi Mu M r a T (Note 1) IN Pin Voltage (Note 3) SET Pin Voltage with Respect to GND Pin ...........................0.3V, 40V with Respect to IN Pin (Note 3) .................0.3V, 36V ILIM Pin Voltage with Respect to GND Pin ....................................36V with Respect to IN Pin (Note 3) ................0.3V, 0.7V SET Pin Current (Note 9)........................................5mA IMONP Pin Voltage OUT Pin Voltage with Respect to IN Pin (Note 3) .................0.3V, 40V with Respect to IN Pin (Note 3) .................0.3V, 36V with Respect to GND Pin ............................40V, 20V with Respect to GND Pin ....................................36V with Respect to IMONN Pin ........................40V, 20V Output Short-Circuit Duration .......................... Indefinite IMONN Pin Voltage Operating Junction Temperature Range (Note 2) with Respect to IN Pin (Note 3) .................0.3V, 40V E-, I-Grade ........................................ 40C to 125C with Respect to GND Pin ............................40V, 20V MP-Grade ......................................... 55C to 150C SHDN Pin Voltage H-Grade ............................................ 40C to 150C with Respect to IN Pin (Note 3) .................0.3V, 55V Storage Temperature Range .................. 65C to 150C with Respect to GND Pin ............................40V, 20V Lead Temperature (Soldering, 10 Sec) MSE Package ...................................................300C p c F T TOP VIEW TOP VIEW IN 1 10 OUT IN 1 12 OUT IN 2 11 OUT IN 9 OUT 2 3 11 IN 13 10 OUT ILIM 3 GND 8 IN 4 IN 9 GND ILIM 4 IMONP 7 SET IMONP 5 8 SET IMONN 6 7 SHDN IMONN 5 6 SHDN MSE PACKAGE DD PACKAGE 12-LEAD PLASTIC MSOP 10-LEAD (3mm 3mm) PLASTIC DFN T = 150C, = 33C/W, = 8C/W JMAX JA JC T = 150C, = 34C/W, = 5.5C/W JMAX JA JC EXPOSED PAD (PIN 13) IS IN, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 11) IS IN, MUST BE SOLDERED TO PCB o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3090EDD PBF LT3090EDD TRPBF LGHJ 10-Lead (3mm x 3mm) Plastic DFN 40C to 125C LT3090IDD PBF LT3090IDD TRPBF LGHJ 10-Lead (3mm x 3mm) Plastic DFN 40C to 125C LT3090HDD PBF LT3090HDD TRPBF LGHJ 10-Lead (3mm x 3mm) Plastic DFN 40C to 150C LT3090MPDD PBF LT3090MPDD TRPBF LGHJ 10-Lead (3mm x 3mm) Plastic DFN 55C to 150C LT3090EMSE PBF LT3090EMSE TRPBF 3090 12-Lead Plastic MSOP 40C to 125C LT3090IMSE PBF LT3090IMSE TRPBF 3090 12-Lead Plastic MSOP 40C to 125C LT3090HMSE PBF LT3090HMSE TRPBF 3090 12-Lead Plastic MSOP 40C to 150C LT3090MPMSE PBF LT3090MPMSE TRPBF 3090 12-Lead Plastic MSOP 55C to 150C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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