LT3089 800mA Single Resistor Rugged Linear Regulator with Monitors FEATURES DESCRIPTION n Extended Safe Operating Area The LT 3089 is an 800mA low dropout linear regulator n Maximum Output Current: 800mA designedfor rugged industrial applications. Key features of n Stable with or without Input/Output Capacitors the IC are the extended safe operating area (SOA), output n Wide Input Voltage Range: 1.2V to 36V current monitor, temperature monitor and programmable n Single Resistor Sets Output Voltage current limit. The LT3089 can be paralleled for higher n Output Current Monitor: I = I /5000 output current or heat spreading. The device withstands MON OUT n Junction Temperature Monitor: 1A/C reverse input and reverse output-to-input voltages without n Output Adjustable to 0V reverse current flow. n 50A SET Pin Current: 1% Initial Accuracy The LT3089s precision 50A reference current source n Output Voltage Noise: 27V RMS allows a single resistor to program output voltage to n Parallel Multiple Devices for Higher Current or any level between zero and 34.5V. The current reference Heat Spreading architecture enables load regulation to be independent of n Programmable Current Limit output voltage. The LT3089 is stable with or without input n Reverse-Battery and Reverse-Current Protection and output capacitors. n <1mV Load Regulation Typical Independent of V OUT n The output current monitor (I /5000) and die junction <0.001%/V Line Regulation Typical OUT n temperature output (1A/C) provide system monitor- Available in Thermally-Enhanced 12-Lead 4mm ing and debug capability. In addition, a single resistor 4mm DFN, 16-Lead TSSOP, and 7-Lead DD-Pak programs current limit. Internal protection circuitry includes reverse-battery and APPLICATIONS reverse-current protection, current limiting and thermal lim- n All Surface Mount Power Supply iting. The LT3089 is offered in the 12-lead 4mm 4mm DFN n Rugged Industrial Power Supply and 16-lead TSSOP (both with exposed pad for improved n Post Regulator for Switching Supplies thermal performance), and 7-lead DD-Pak power package. n Low Output Voltage Supply n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Intrinsic Safety Applications Technology Corporation. All other trademarks are the property of their respective owners. SET Pin Current TYPICAL APPLICATION 50.5 I = 3mA LOAD 50.4 Wide Safe Operating Area Supply V 50.3 IN 50.2 IN LT3089 50.1 I /5000 1A/C 50A LOAD 50.0 49.9 + 49.8 I OUT OUT 1.5V 49.7 0.75A I I MON TEMP SET LIM 49.6 499* 10F* 49.5 1k 1k 30.1k 4.12k 3089 TA01a 75 50 25 0 25 50 75 100 125 150 175 *OPTIONAL TEMPERATURE (C) 3089 TA01b 3089f 1 For more information www.linear.com/LT3089 SET PIN CURRENT (A)LT3089 ABSOLUTE MAXIMUM RATINGS (Note 1) All voltages Relative to V . OUT IN Pin to OUT Pin Differential Voltage .....................40V Operating Junction Temperature Range (Note 2) SET Pin Current (Note 6) .....................................25mA E-, I-Grades ....................................... 40C to 125C SET Pin Voltage (Relative to OUT, Note 6) .............. 10V Storage Temperature Range .................. 65C to 150C TEMP Pin Voltage (Relative to OUT) .................1V, 40V Lead Temperature (Soldering, 10 sec) I Pin Voltage (Relative to OUT) .........................0.2V FE, R Packages Only .........................................300C LIM I Pin Voltage (Relative to OUT) ...................1V, 40V MON Output Short-Circuit Duration .......................... Indefinite PIN CONFIGURATION TOP VIEW OUT 1 16 OUT TOP VIEW FRONT VIEW OUT 2 15 IN OUT 1 12 IN OUT 3 14 IN 7 NC OUT 2 11 IN 6 IN OUT 4 13 IN OUT 3 10 IN 17 13 5 TEMP TAB IS OUT OUT 4 OUT OUT 4 9 IN OUT 5 12 IN OUT 3 I MON I 5 8 TEMP LIM I 6 11 TEMP 2 SET LIM SET 6 7 I 1 I MON LIM SET 7 10 I MON DF PACKAGE R PACKAGE OUT 8 9 OUT 12-LEAD (4mm 4mm) PLASTIC DFN 7-LEAD PLASTIC DD T = 125C, = 41C/W, = 1.6C/W JMAX JA JC FE PACKAGE T = 125C, = 34C/W, = 3C/W JMAX JA JC EXPOSED PAD (PIN 13) IS OUT, MUST BE SOLDERED TO PCB 16-LEAD PLASTIC TSSOP T = 125C, = 35C/W, = 2.3C/W JMAX JA JC EXPOSED PAD (PIN 17) IS OUT, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3089EDF PBF LT3089EDF TRPBF 3089 12-Lead (4mm 4mm) Plastic DFN 40C to 125C LT3089IDF PBF LT3089IDF TRPBF 3089 12-Lead (4mm 4mm) Plastic DFN 40C to 125C LT3089EFE PBF LT3089EFE TRPBF 3089FE 16-Lead Plastic TSSOP 40C to 125C LT3089IFE PBF LT3089IFE TRPBF 3089FE 16-Lead Plastic TSSOP 40C to 125C LT3089ER PBF LT3089ER TRPBF LT3089R 7-Lead Plastic DD-Pak 40C to 125C LT3089IR PBF LT3089IR TRPBF LT3089R 7-Lead Plastic DD-Pak 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: