STMicroelectronics TSC101CILT

Overview

TSC101CILT from STMicroelectronics is a high-side current sense amplifier with fixed 100 V/V gain, operating over 4–24 V supply and 2.8–30 V input common-mode voltage range, surviving up to 60 V load-dump transients, and consuming ≤300 µA quiescent current in SOT23-5 package - used for precision DC motor current feedback in automotive and photovoltaic systems.

For engineers reviewing the TSC101CILT datasheet, TSC101CILT pinout, TSC101CILT application, or TSC101CILT equivalent, this device supports ground-referenced output scaling of shunt-based high-side current measurements where supply voltage independence, low drift (±0.9 mV max offset), and 10 µs settling time are critical selection criteria.

Technical Context

The TSC101CILT implements a precision current-sense architecture with fully differential input stage referenced to Vm, enabling accurate measurement of small differential voltages (±60 mV full-scale) across high-side shunts while rejecting common-mode voltages up to 30 V - independent of VCC. Its internal resistor ratio sets fixed 100 V/V gain without external components.

It features rail-to-rail buffered output with ±10 mA drive capability, short-circuit protection (60 mA sink / 26 mA source), and 450 kHz bandwidth optimized for stability with ≤47 pF capacitive loads - supporting fast transient response in battery charger and motor control feedback loops.

Key Specifications

Pinout & Package

SOT23-5 plastic package (ECOPACK® compliant), 1.2 mm height, 2.9 mm × 2.8 mm footprint, thermal resistance R_thJA = 250 °C/W - suitable for space-constrained PCB layouts with moderate power dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current sensing applications.

Compared with MAX4080TASA+ and INA240A1DR, the TSC101CILT delivers optimal balance of ultra-low ICC (300 µA), automotive-grade transient robustness (60 V), and SOT23-5 footprint - making it ideal for space- and power-constrained high-volume automotive and solar applications where 30 V CM range suffices.

Availability

TSC101CILT is available at Aetrix Electronics and suitable for automotive battery monitoring, photovoltaic charge control, and industrial DC motor control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSC101CILT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for automotive, industrial, and consumer markets.

The TSC101 belongs to ST's high-side current sense amplifier product line, engineered specifically for reliable, low-power, ground-referenced current measurement in harsh environments including automotive and renewable energy systems.

FAQ

What is the maximum allowable shunt voltage (Vsense) for TSC101CILT?

The absolute maximum differential input voltage (Vp − Vm) is ±60 V, but the linear operating range is limited by gain and output swing. With 100 V/V gain and VCC = 24 V, maximum usable Vsense is 240 mV (to keep Vout ≤ VCC). At VCC = 4 V, max Vsense is 40 mV. For best accuracy, operate within ±100 mV where total output voltage accuracy is ±3.5% to ±5%.

Can TSC101CILT be used with a 3.3 V supply?

No - the minimum specified VCC is 4.0 V. Operation below 4 V violates the absolute maximum rating table and risks undefined behavior, reduced CMR, or failure to meet gain accuracy specs. For 3.3 V systems, use a level-shifted supply or select a 2.7 V–5.5 V alternative such as MAX40010.

Does TSC101CILT require external compensation capacitors?

No - the device is internally compensated and stable with capacitive loads ≤47 pF. Adding larger output capacitance (e.g., >100 pF) may cause ringing or oscillation. If filtering is needed, place RC networks after the output buffer, not directly on the Out pin.

How does the TSC101CILT handle reverse current flow?

It measures bidirectional differential voltage: negative Vsense (Vm > Vp) produces negative output voltage relative to Gnd. However, the output stage cannot go below Gnd - Vol is specified at 50–100 mV, so true negative output requires a dual-supply op-amp stage. For reverse-current detection, interpret near-zero or saturated-low output as indicative of reversed polarity.