LT6106 36V Low Cost High Side Current Sense in a SOT-23 FEATURES DESCRIPTION n Gain Configurable with Two Resistors The LT 6106 is a versatile high side current sense ampli- n Low Offset Voltage: 250V Maximum fier. Design flexibility is provided by the excellent device n Output Current: 1mA Maximum characteristics: 250V maximum offset and 40nA maxi- n Supply Range: 2.7V to 36V, 44V Absolute Maximum mum input bias current. Gain for each device is set by two n Low Input Bias Current: 40nA Maximum resistors and allows for accuracy better than 1%. n PSRR: 106dB Minimum The LT6106 monitors current via the voltage across an + n Low Supply Current: 65A Typical, V = 12V external sense resistor (shunt resistor). Internal circuitry n Operating Temperature Range: 40C to 125C converts input voltage to output current, allowing for a n Low Profile (1mm) ThinSOT Package small sense signal on a high common mode voltage to n AEC-Q100 Qualified for Automotive Applications be translated into a ground referenced signal. The low DC offset allows for monitoring very small sense voltages. As APPLICATIONS a result, a small valued shunt resistor can be used, which n Current Shunt Measurement minimizes the power loss in the shunt. n Battery Monitoring The wide 2.7V to 44V input voltage range, high accuracy n Power Management and wide operating temperature range make the LT6106 n Motor Control ideal for automotive, industrial and power management n Lamp Monitoring applications. The very low power supply current of the n Overcurrent and Fault Detection LT6106 also makes it suitable for low power and battery operated applications. All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION 3V to 36V, 5A Current Sense with A = 10 Measurement Accuracy vs Load Current V 3V TO 36V 0.6 LIMIT OVER TEMPERATURE 0.4 0.2 100 0.02 0 TYPICAL PART AT T = 25C A +IN IN 0.2 + 0.4 LOAD LIMIT OVER TEMPERATURE + V V 0.6 0.8 5A FULL SCALE R = 100 IN 1.0 R = 0.02 R = 1k SENSE OUT + A = 10 V = 3V V 1.2 OUT V OUT 0 4 5 1 2 3 LT6106 200mV/A LOAD CURRENT (A) 1k 6106 TA01b 6106 TA01a Rev. C 1 Document Feedback For more information www.analog.com ACCURACY (% OF FULL SCALE)LT6106 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) + Supply Voltage (V to V ) ..........................................44V TOP VIEW + Input Voltage (+IN to V ) ............................................. V + OUT 1 5 V + (IN to V ) ............................................ V V 2 IN 3 4 +IN Input Current ........................................................10mA Output Short-Circuit Duration .......................... Indefinite S5 PACKAGE 5-LEAD PLASTIC TSOT-23 Operating Temperature Range (Note 4) T = 150C, = 250C/W JMAX JA LT6106C/LT6106I .................................40C to 85C LT6106H ............................................ 40C to 125C Specified Temperature Range (Note 4) LT6106C .................................................. 0C to 70C LT6106I ................................................40C to 85C LT6106H ............................................ 40C to 125C Storage Temperature Range .................. 65C to 150C Lead Temperature (Soldering, 10 sec) ...................300C ORDER INFORMATION TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT6106CS5 TRMPBF LT6106CS5 TRPBF LTCWK 5-Lead Plastic TSOT-23 0C to 70C LT6106IS5 TRMPBF LT6106IS5 TRPBF LTCWK 5-Lead Plastic TSOT-23 40C to 85C LT6106HS5 TRMPBF LT6106HS5 TRPBF LTCWK 5-Lead Plastic TSOT-23 40C to 125C AUTOMOTIVE PRODUCTS** LT6106HS5 WTRMPBF LT6106HS5 WTRPBF LTCWK 5-Lead Plastic TSOT-23 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. **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 + + operating temperature range, otherwise specifications are at T = 25C. V = 12V, V = V +, R = 100, R = 10k, Gain = 100 A SENSE IN OUT unless otherwise noted. (Note 6) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS + V Supply Voltage Range l 2.7 36 V V Input Offset Voltage V = 5mV 150 250 V OS SENSE l 350 V V /T Input Offset Voltage Drift V = 5mV l 1 V/C OS SENSE + I Input Bias Current (+IN) V = 12V, 36V 40 nA B l 65 nA + I Input Offset Current V = 12V, 36V 1 nA OS l I Maximum Output Current (Note 2) 1 mA OUT + PSRR Power Supply Rejection Ratio V = 2.7V to 36V, V = 5mV l 106 dB SENSE l V Input Sense Voltage Full Scale R = 500 (Notes 2, 7) 0.5 V SENSE(MAX) IN + A Error Gain Error (Note 3) V = 500mV, R = 500, R = 10k, V = 12.5V l 0.65 0.25 0 % V SENSE IN OUT + V = 500mV, R = 500, R = 10k, V = 36V l 0.45 0.14 0.1 % SENSE IN OUT Rev. C 2 For more information www.analog.com