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Texas Instruments LMP8646MK/NOPB — Analog & Data Acquisition

LMP8646MK/NOPB Current Sense Amplifier, 0.5V/µs, SOT-23-THIN

MPNLMP8646MK/NOPB
End of Life

Texas Instruments LMP8646MK/NOPB current sense amplifier, single circuit, 0.5V/µs slew rate, 2.7 V to 12 V supply, SOT-23-THIN package, -40°C to 125°C operating temperature.

$4.1Ref. price · indicative, final on quote
Texas Instruments LMP8646MK/NOPB datasheet (PDF)
PackagingSOT-23-6 Thin, TSOT-23-6
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LMP8646MK/NOPB specifications
ParameterValue
MountingSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset1 mV
Voltage - supply span2.7 V
Current - supply2.1mA
Current - input bias12.5 µA
Current - output (Channel)5 mA
Operating temperature-40°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate0.5V/µs
CaseSOT-23-6 Thin, TSOT-23-6
Number of circuits1

Product details

What this current sense amplifier does

The Texas Instruments LMP8646MK/NOPB is a single-circuit current sense amplifier in a SOT-23-THIN package. It monitors current by amplifying the voltage drop across a shunt resistor, outputting a ground-referenced voltage proportional to the load current. The 0.5 V/µs slew rate handles moderate-speed switching loads. Supply spans 2.7 V to 12 V.

Key specs that drive the design decision

Input offset voltage is 1 mV. Paired with the 12.5 µA input bias current, expect a few millivolts of error at the output if the shunt resistance is high. The 2.1 mA supply current is fixed. Output can sink or source 5 mA per channel. The single-circuit layout keeps the BOM simple.

Mounting and package note

Surface-mount in SOT-23-6 Thin. The thin profile keeps the package height low for tight board stacks. Supplier device package is SOT-23-THIN.

Frequently asked questions

Where can I find the datasheet for LMP8646MK/NOPB?

The datasheet is available from Texas Instruments under the LMP8646 product folder. The part number LMP8646MK/NOPB covers the SOT-23-THIN package variant with ROHS3 compliance.

What are alternatives to LMP8646MK/NOPB?

The INA254A1IPWAR is a zero-drift current sense amplifier with a 350 kHz bandwidth and 2.4 V/µs slew rate, also in a surface-mount package. It draws 1.8 mA supply current versus the LMP8646's 2.1 mA, and operates over the same -40°C to 125°C range. If you need a four-channel current sense amp, the INA4290A2IRGVR offers 1.1 MHz bandwidth and 2 V/µs slew rate in a single package.