What this AEC-Q100 current sense amplifier brings to the BOM
The 165 µA supply current keeps the thermal load low, and the 5.5 µA input bias current means the shunt voltage drop is not significantly loaded.
The 450 kHz -3 dB bandwidth gives this part enough speed to track current waveforms in switching power supplies and motor-drive phases running at several hundred kilohertz. The 0.9 V/µs slew rate means the output can follow fast current transients — think load dumps or short-circuit events — without excessive delay. For a typical 10 mΩ shunt, the 200 µV input offset translates to a 20 mA DC error at the sense point, which is acceptable for most automotive load monitoring and overcurrent detection loops.
Package and mounting for the SOT-23-5 footprint
The TSC101CIYLT comes in a SOT-23-5 package (SC-74A, SOT-753) rated for surface-mount assembly. The five-pin footprint is common and easy to route: the shunt inputs, supply, ground, and output fit on a tight PCB without needing a dedicated sense amplifier layer. The 60 mA output per channel can drive the ADC input of a microcontroller or an external comparator directly.
The AEC-Q100 qualification means the part has passed the full suite of automotive stress tests — temperature cycling, HBM ESD, latch-up, and life test — and is supported by PPAP documentation that an OEM auditor will ask for.