LT3092 200mA 2-Terminal Programmable Current Source FEATURES DESCRIPTION n Programmable 2-Terminal Current Source The LT 3092 is a programmable 2-terminal current n Maximum Output Current: 200mA source. It requires only two resistors to set an output n Wide Input Voltage Range: 1.2V to 40V current between 0.5mA and 200mA. A multitude of analog n Input/Output Capacitors Not Required techniques lend themselves to actively programming the n Resistor Ratio Sets Output Current output current. The LT3092 is stable without input and n Initial Set Pin Current Accuracy: 1% output capacitors, offering high DC and AC impedance. This n Reverse-Voltage Protection feature allows operation in intrinsically safe applications. n Reverse-Current Protection The SET pin features 1% initial accuracy and low tem- n <0.001%/V Line Regulation Typical perature coefficient. Current regulation is better than n Current Limit and Thermal Shutdown Protection 10ppm/V from 1.5V to 40V. n Available in 8-Lead SOT-23, 3-Lead SOT-223 and The LT3092 can operate in a 2-terminal current source 8-Lead 3mm 3mm DFN Packages n configuration in series with signal lines. It is ideal for driv- AEC-Q100 Qualified for Automotive Applications ing sensors, remote supplies, and as a precision current limiter for local supplies. APPLICATIONS Internal protection circuitry includes reverse-battery and n 2-Terminal Floating Current Source reverse-current protection, current limiting and thermal n GND Referred Current Source limiting. The LT3092 is offered in the 8-lead TSOT-23, n Variable Current Source 3-lead SOT-223 and 8-lead 3mm 3mm DFN packages. n In-Line Limiter All registered trademarks and trademarks are the property of their respective owners. n Intrinsic Safety Circuits TYPICAL APPLICATION Adjustable 2-Terminal Current Source SET Pin Current vs Temperature 10.100 V V = 1.2V TO 40V IN OUT 10.075 IN LT3092 10.050 10A 10.025 + 10.000 9.975 SET OUT 9.950 R R 9.925 SET OUT 9.900 50 25 0 25 50 75 100 125 150 3092 TA01a TEMPERATURE (C) 3092 TA01b R SET I =10A SOURCE R OUT Rev. D 1 Document Feedback For more information www.analog.com SET PIN CURRENT (A)LT3092 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 .......................... Indefinite Storage Temperature Range .................. 65C to 150C Lead Temperature (ST, TS8 Packages Only) Soldering, 10 sec ..............................................300C PIN CONFIGURATION TOP VIEW TOP VIEW 3 TOP VIEW IN OUT 1 8 IN NC 1 8 IN OUT 2 7 IN TAB IS OUT 2 9 OUT OUT 2 7 IN NC 3 6 NC OUT 3 6 NC SET 4 5 NC 1 SET OUT 4 5 SET TS8 PACKAGE ST PACKAGE DD PACKAGE 8-LEAD PLASTIC TSOT-23 3-LEAD PLASTIC SOT-223 8-LEAD (3mm 3mm) PLASTIC DFN T = 125C, = 57C/W, = 15C/W T = 125C, = 24C/W, = 15C/W JMAX JA JC JMAX JA JC T = 125C, = 28C/W, = 10C/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 SEE THE APPLICATIONS INFORMATION SECTION. ON THE PCB. SEE THE APPLICATIONS INFORMATION SECTION. Rev. D 2 For more information www.analog.com