MEASURED CURRENT (mA) LTC6115 High Voltage High Side Current and Voltage Sense FEATURES DESCRIPTION Current Sense The LTC 6115 is a versatile combination of a high volt- n Supply Range: 5V to 100V age, high side current sense amplifier and a voltage sense n Low Offset Voltage: 500V (Maximum) amplier. Design flexibility is provided by the excellent n 1s Response Time device characteristics: 500V maximum offset voltage n Gain Configurable with 2 Resistors for current sense and maximum 0.15% voltage sense n Low Input Bias Current: 170nA (Maximum) total gain error. n PSRR: 118dB (Minimum) The current sensing part of the LTC6115 monitors current n Low Supply Current: 250A by sensing the voltage across an external sense resistor. Voltage Sense The sensed voltage is converted to an output current which n Voltage Sense Range: 0V to 100V can then be translated to a voltage by an external resistor, n Precision 1M Resistor Divider R . Due to its fast response, it is a perfect choice for load OUT n Low Total Gain Error: 0.15% (Maximum) current warning and shut-off protection control. n Supply Voltage Range: 2.7V to 5.5V The LTC6115 also includes an internal 1M resistor n Low Supply Current: 57A divider and a precision voltage amplifier for accurate volt- n Operating Temperature Range: 40C to 125C age monitoring. The resistor attenuation of 40 enables n AEC-Q100 Qualified for Automotive Applications sensing of up to 100V on the V pin, making it suitable for IN precision high voltage monitoring in telecommunications, APPLICATIONS industrial and automotive applications. The full-scale out- n Current Shunt Measurement put voltage can be configured by external gain resistors n Battery Monitoring to maximize use of the amplifiers rail-to-rail output. The n Power Management LTC6115 is available in a 12-lead MSOP package. n Automotive Sensing and Control All registered trademarks and trademarks are the property of their respective owners. n Industrial Monitoring TYPICAL APPLICATION Power Supply Voltage and Load Current Monitor Voltage and Current Across Swept R , LOAD Sampled by Linduino 10-Bit ADC + V 100 500 SUPPLY1 + V = 40V 5V TO 100V R IN DC2026 (Linduino) IN 90 450 V = 5V S R = 132 LOAD + 80 400 V R A1 SENSE SENSE +IN OUTI 70 350 R OUT 60 300 LOAD GND 50 250 V IN V R = 158 S LOAD SUPPLY1 40 200 SUPPLY2 975k 2.7V TO 5.5V 30 150 OUTV 20 100 A2 25k VOLTAGE FB 50 10 CURRENT 0 0 0 3 6 9 12 15 18 21 24 27 30 LTC6115 GND 6115 TA01a TIME (s) 6115 TA01b Rev. B 1 Document Feedback For more information www.analog.com MEASURED VOLTAGE (V)LTC6115 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) Total Supply Voltage TOP VIEW + V to GND ...........................................................105V IN 1 12 +IN + V to GND ...............................................................6V S NC 2 11 V OUTI 3 10 NC Input Voltage (V Pin) ............................................105V IN 4 GND 9 V IN + Minimum IN Pin Voltage ................................ (V 4V) 5 FB 8 NC 6 7 OUTV V S FB Pin Voltage .......................... GND 0.3V to V + 0.3V S MS PACKAGE Input Current (+IN, IN, FB Pins) ......................... 10mA 12-LEAD PLASTIC MSOP Maximum Output Voltage (OUTI Pin) ..........................9V = 135C/W, T = 150C JA JMAX Output Short-Circuit Duration (to GND) ........... Indefinite Operating Temperature Range (Note 2) LTC6115I ..............................................40C to 85C LTC6115H .......................................... 40C to 125C Specified Temperature Range (Note 3) LTC6115I ..............................................40C to 85C LTC6115H .......................................... 40C to 125C Storage Temperature Range .................. 65C to 150C Lead Temperature (Soldering, 10 sec) ...................300C ORDER INFORMATION TUBE TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC6115IMS PBF LTC6115IMS TRPBF 6115 12-Lead Plastic MSOP 40C to 85C LTC6115HMS PBF LTC6115HMS TRPBF 6115 12-Lead Plastic MSOP 40C to 125C AUTOMOTIVE PRODUCTS** LTC6115HMS WPBF LTC6115HMS WTRPBF 6115 12-Lead Plastic MSOP 40C to 125C Consult ADI Marketing for parts specified with wider operating temperature ranges. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. **Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for thesemodels. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full specified + + + temperature range, otherwise specifications are at T = 25C. R = 100, R = 10k, V = V (Note 4), 5V V 100V, A IN OUT SENSE V = 20V, unless otherwise noted. IN SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS CURRENT SENSE + Supply Voltage Range (V ) l 5 100 V V Input Offset Voltage (+IN, IN) V = 5mV, Gain = 100 85 500 V OS SENSE l 800 V V /T Input Offset Voltage Drift V = 5mV, Gain = 100 l 3 V/C OS SENSE I Input Bias Current (+IN, IN) R = 1M, R = 1M 85 170 nA B IN OUT l 245 nA I Input Offset Current R = 1M l 2 20 nA OS IN Rev. B 2 For more information www.analog.com