DC2261A-A

DC2261A-A demonstration circuit features the LT6119-1, a high side current sense amplifier with comparators and a 400mV reference. The demo board circuit amplifies the voltage across an on-board current sense resistor, to provide a precision unipolar voltage output that is proportional to the sensed current. The board has two on-board comparators with latching outputs and an integrated 400mV reference that sets the threshold for the comparators. The DC2261A-A (LT6119-1) has an inverting and a noninverting comparator input. The demonstration-board includes circuitry to guarantee that the comparator resets on power up. The current sense gain and current fault limits are set by on-board resistors. The default gain is set at 10V/A and the comparators are set to trip at current thresholds of 50mA and 300mA.

• Input supply range from 2.7 to 60V
• 1V typ measured output signal at ILOAD = 100mA
• Output load current range : 3A max at thermal limit of RSENSE
• 600µA typ IN quiescent current at VIN = 12V
• 300mA comparator1 threshold at VOUTA = 3V
• 50mA comparator2 threshold at VOUTA = 0.5V