DC1114A

DC1114A demonstration circuit features the LT6100, precision, gain selectable high side current sense amplifier. This demo board amplifies a current-sense resistor voltage-drop, providing a precision uni-polar output voltage proportional to load current. The demo circuit is equipped with jumpers to facilitate setting the pin strapped gain configuration. The LT6100 is unique in that it is powered from a low voltage (down to 2.7V) while it measures current of an Over-The-Top® higher voltage power bus (1.4V or more above VCC). This device is especially suitable for measuring battery system current since the monitoring-input current draw s become negligible when VCC is powered down.

• Max monitored supply input range VCC+1.4V to 48V
• Amplifier supply range from 2.7 to 36V
• 2.5V typ measurement output signal at IOUT = 5A, jumper settings:A4=VEE, A2=OUT
• 7A max output current range at thermal limit of RSENSE
• 130mA max VCC supply current at VIN = VCC +1.4V, IOUT = 0A
• 10µA typ VIN quiescent current at VIN = VCC +1.4V, IOUT = 0A
• 1nA typ VIN current during shutdown at VCC = 0V, IOUT = 0A, VIN less than equal to 48V
• 50µs typ VMON step-response time at IOUT step from 0A to 5A