LT6105 Datasheet | Linear Technology

LT6105 Precision, Extended Input Range Current Sense Amplifier Features Very Wide, Over-the-Top®, Input mon Mode Range - Extends 44V Above V - (Independent of V +) - Extends - 0.3V Below V - n Wide Power Supply Range: 2.85V to 36V n Input Offset Voltage: 300μV Maximum .. n Gain Accuracy: 1% Max n Gain Configurable with External Resistors n Operating Current: 150μA n Slew Rate: 2V/μs n Sense Input Current When Powered Down: 1n A n Full-Scale Output Current: 1m A Minimum n Operating Temperature Range - 40°C to 125°C n Available in 2mm × 3mm DFN and 8-Lead MSOP Packages n DESCRIPTION The LT®6105 is a micropower, precision current sense amplifier with a very wide input mon mode range. The LT6105 monitors unidirectional current via the voltage across an external sense resistor. The input mon mode range extends from - 0.3V to 44V, with respect to the negative supply voltage (V - ). This allows the LT6105 to operate as a high side current sense monitor or a low side current sense monitor. It also allows the LT6105 to monitor current on a negative supply voltage, as well as continuously monitor a battery from full charge to depletion. The inputs of LT6105 can withstand differential voltages up to ±44V, which makes it ideal for monitoring a fuse or MOSFET switch. Gain is configured with external resistors from 1V/V to 100V/V. The input mon mode rejection and power supply rejection are in excess of 100d B and the input offset voltage is less than 300μV. A minimum slew rate of 2V/μs ensures fast response to unexpected current changes. The LT6105 can operate from an independent power supply of 2.85V to 36V and draws only 150μA. When V+ is powered down, the sense pins are biased off. This prevents loading of the monitored circuit, irrespective of the sense voltage. The LT6105 is available in a 6-lead DFN and 8-lead MSOP package. , LT, LTC, LTM and Over-the-Top are registered trademarks of Linear Technology Corporation. All other trademarks are the property...