It is designed to measure current by sensing the voltage drop across a shunt resistor, converting it to a ground-referenced output. With an input offset voltage of 1 mV and input bias current of 12.5 µA, it delivers adequate accuracy for motor current monitoring, power supply load detection, and battery management in industrial and automotive environments rated -40°C to 125°C.
Supply voltage range and system compatibility
The 2.7 V minimum supply means the LMP8646MKE/NOPB can run from a 3.3 V rail with margin, and the 12 V maximum covers 12 V industrial buses. This span covers the majority of common analog supply voltages without needing an extra regulator. The 2.1 mA supply current is moderate — budget it in the system power budget, but it is not a low-power part for battery-operated designs.
Slew rate and bandwidth — what 0.5 V/µs means for your measurement
The 0.5 V/µs slew rate is modest. This part is intended for DC or slowly varying current sensing — think average load current monitoring, overcurrent detection, or battery charging current. It is not suited for capturing fast transient events like inrush spikes or switching regulator load steps. If your application needs to track sub-millisecond current changes, look at a faster current sense amplifier.
Package and footprint: SOT-23-Thin
The LMP8646MKE/NOPB is offered in a SOT-23-6 Thin package (also referred to as TSOT-23-6). This is a small, surface-mount package suitable for space-constrained designs. The thin profile helps in low-height applications.
Lifecycle and sourcing posture
It is ROHS3 compliant.