The TC75S51FU from Toshiba is a Power Operational Amplifier with Supply Voltage 1.5 to 7 V, Input Offset Voltage 2 to 10 mV, Input Bias Current 1 pA, Input Offset Current 1 pA, Output Voltage 0.1 to 2.9 V. Tags: Surface Mount, General Purpose Op Amp. More details for TC75S51FU can be seen below.